---
_id: '14628'
abstract:
- lang: eng
text: We introduce a compact, intuitive procedural graph representation for cellular
metamaterials, which are small-scale, tileable structures that can be architected
to exhibit many useful material properties. Because the structures’ “architectures”
vary widely—with elements such as beams, thin shells, and solid bulks—it is difficult
to explore them using existing representations. Generic approaches like voxel
grids are versatile, but it is cumbersome to represent and edit individual structures;
architecture-specific approaches address these issues, but are incompatible with
one another. By contrast, our procedural graph succinctly represents the construction
process for any structure using a simple skeleton annotated with spatially varying
thickness. To express the highly constrained triply periodic minimal surfaces
(TPMS) in this manner, we present the first fully automated version of the conjugate
surface construction method, which allows novices to create complex TPMS from
intuitive input. We demonstrate our representation’s expressiveness, accuracy,
and compactness by constructing a wide range of established structures and hundreds
of novel structures with diverse architectures and material properties. We also
conduct a user study to verify our representation’s ease-of-use and ability to
expand engineers’ capacity for exploration.
acknowledgement: "The authors thank Mina Konaković Luković and Michael Foshey for
their early contributions to this project, David Palmer and Paul Zhang for their
insightful discussions about minimal surfaces and the CSCM, Julian Panetta for providing
the Elastic Textures code, and Hannes Hergeth for his feedback and support. We also
thank our user study participants and anonymous reviewers.\r\nThis material is based
upon work supported by the National Science Foundation\r\n(NSF) Graduate Research
Fellowship under Grant No. 2141064; the MIT Morningside\r\nAcademy for Design Fellowship;
the Defense Advanced Research Projects Agency\r\n(DARPA) Grant No. FA8750-20-C-0075;
the ERC Consolidator Grant No. 101045083,\r\n“CoDiNA: Computational Discovery of
Numerical Algorithms for Animation and Simulation of Natural Phenomena”; and the
NewSat project, which is co-funded by the Operational Program for Competitiveness
and Internationalisation (COMPETE2020), Portugal 2020, the European Regional Development
Fund (ERDF), and the Portuguese Foundation for Science and Technology (FTC) under
the MIT Portugal program."
article_number: '168'
article_processing_charge: Yes (in subscription journal)
article_type: original
author:
- first_name: Liane
full_name: Makatura, Liane
last_name: Makatura
- first_name: Bohan
full_name: Wang, Bohan
last_name: Wang
- first_name: Yi-Lu
full_name: Chen, Yi-Lu
id: 0b467602-dbcd-11ea-9d1d-ed480aa46b70
last_name: Chen
- first_name: Bolei
full_name: Deng, Bolei
last_name: Deng
- first_name: Christopher J
full_name: Wojtan, Christopher J
id: 3C61F1D2-F248-11E8-B48F-1D18A9856A87
last_name: Wojtan
orcid: 0000-0001-6646-5546
- first_name: Bernd
full_name: Bickel, Bernd
id: 49876194-F248-11E8-B48F-1D18A9856A87
last_name: Bickel
orcid: 0000-0001-6511-9385
- first_name: Wojciech
full_name: Matusik, Wojciech
last_name: Matusik
citation:
ama: 'Makatura L, Wang B, Chen Y-L, et al. Procedural metamaterials: A unified procedural
graph for metamaterial design. ACM Transactions on Graphics. 2023;42(5).
doi:10.1145/3605389'
apa: 'Makatura, L., Wang, B., Chen, Y.-L., Deng, B., Wojtan, C., Bickel, B., &
Matusik, W. (2023). Procedural metamaterials: A unified procedural graph for metamaterial
design. ACM Transactions on Graphics. Association for Computing Machinery.
https://doi.org/10.1145/3605389'
chicago: 'Makatura, Liane, Bohan Wang, Yi-Lu Chen, Bolei Deng, Chris Wojtan, Bernd
Bickel, and Wojciech Matusik. “Procedural Metamaterials: A Unified Procedural
Graph for Metamaterial Design.” ACM Transactions on Graphics. Association
for Computing Machinery, 2023. https://doi.org/10.1145/3605389.'
ieee: 'L. Makatura et al., “Procedural metamaterials: A unified procedural
graph for metamaterial design,” ACM Transactions on Graphics, vol. 42,
no. 5. Association for Computing Machinery, 2023.'
ista: 'Makatura L, Wang B, Chen Y-L, Deng B, Wojtan C, Bickel B, Matusik W. 2023.
Procedural metamaterials: A unified procedural graph for metamaterial design.
ACM Transactions on Graphics. 42(5), 168.'
mla: 'Makatura, Liane, et al. “Procedural Metamaterials: A Unified Procedural Graph
for Metamaterial Design.” ACM Transactions on Graphics, vol. 42, no. 5,
168, Association for Computing Machinery, 2023, doi:10.1145/3605389.'
short: L. Makatura, B. Wang, Y.-L. Chen, B. Deng, C. Wojtan, B. Bickel, W. Matusik,
ACM Transactions on Graphics 42 (2023).
date_created: 2023-11-29T15:02:03Z
date_published: 2023-10-01T00:00:00Z
date_updated: 2023-12-04T08:09:05Z
day: '01'
ddc:
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department:
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- _id: ChWo
- _id: BeBi
doi: 10.1145/3605389
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creator: yichen
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success: 1
file_date_updated: 2023-12-04T08:04:14Z
has_accepted_license: '1'
intvolume: ' 42'
issue: '5'
keyword:
- Computer Graphics and Computer-Aided Design
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
project:
- _id: 34bc2376-11ca-11ed-8bc3-9a3b3961a088
grant_number: '101045083'
name: Computational Discovery of Numerical Algorithms for Animation and Simulation
of Natural Phenomena
publication: ACM Transactions on Graphics
publication_identifier:
issn:
- 0730-0301
- 1557-7368
publication_status: published
publisher: Association for Computing Machinery
quality_controlled: '1'
status: public
title: 'Procedural metamaterials: A unified procedural graph for metamaterial design'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 42
year: '2023'
...
---
_id: '13188'
abstract:
- lang: eng
text: "The Kirchhoff rod model describes the bending and twisting of slender elastic
rods in three dimensions, and has been widely studied to enable the prediction
of how a rod will deform, given its geometry and boundary conditions. In this
work, we study a number of inverse problems with the goal of computing the geometry
of a straight rod that will automatically deform to match a curved target shape
after attaching its endpoints to a support structure. Our solution lets us finely
control the static equilibrium state of a rod by varying the cross-sectional profiles
along its length.\r\nWe also show that the set of physically realizable equilibrium
states admits a concise geometric description in terms of linear line complexes,
which leads to very efficient computational design algorithms. Implemented in
an interactive software tool, they allow us to convert three-dimensional hand-drawn
spline curves to elastic rods, and give feedback about the feasibility and practicality
of a design in real time. We demonstrate the efficacy of our method by designing
and manufacturing several physical prototypes with applications to interior design
and soft robotics."
acknowledged_ssus:
- _id: M-Shop
acknowledgement: We thank the anonymous reviewers for their generous feedback, and
Julian Fischer for his help in proving Proposition 1. This project has received
funding from the European Research Council (ERC) under the European Union’s Horizon
2020 research and innovation programme (grant agreement No. 715767).
article_number: '171'
article_processing_charge: No
article_type: original
author:
- first_name: Christian
full_name: Hafner, Christian
id: 400429CC-F248-11E8-B48F-1D18A9856A87
last_name: Hafner
- first_name: Bernd
full_name: Bickel, Bernd
id: 49876194-F248-11E8-B48F-1D18A9856A87
last_name: Bickel
orcid: 0000-0001-6511-9385
citation:
ama: Hafner C, Bickel B. The design space of Kirchhoff rods. ACM Transactions
on Graphics. 2023;42(5). doi:10.1145/3606033
apa: Hafner, C., & Bickel, B. (2023). The design space of Kirchhoff rods. ACM
Transactions on Graphics. Association for Computing Machinery. https://doi.org/10.1145/3606033
chicago: Hafner, Christian, and Bernd Bickel. “The Design Space of Kirchhoff Rods.”
ACM Transactions on Graphics. Association for Computing Machinery, 2023.
https://doi.org/10.1145/3606033.
ieee: C. Hafner and B. Bickel, “The design space of Kirchhoff rods,” ACM Transactions
on Graphics, vol. 42, no. 5. Association for Computing Machinery, 2023.
ista: Hafner C, Bickel B. 2023. The design space of Kirchhoff rods. ACM Transactions
on Graphics. 42(5), 171.
mla: Hafner, Christian, and Bernd Bickel. “The Design Space of Kirchhoff Rods.”
ACM Transactions on Graphics, vol. 42, no. 5, 171, Association for Computing
Machinery, 2023, doi:10.1145/3606033.
short: C. Hafner, B. Bickel, ACM Transactions on Graphics 42 (2023).
date_created: 2023-07-04T07:41:30Z
date_published: 2023-09-20T00:00:00Z
date_updated: 2024-03-25T23:30:26Z
day: '20'
ddc:
- '516'
department:
- _id: BeBi
doi: 10.1145/3606033
ec_funded: 1
external_id:
isi:
- '001086833300010'
file:
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checksum: 4954c1cfa487725bc156dcfec872478a
content_type: application/pdf
creator: chafner
date_created: 2023-07-04T08:11:28Z
date_updated: 2023-07-04T08:11:28Z
file_id: '13194'
file_name: kirchhoff-rods.pdf
file_size: 19635168
relation: main_file
success: 1
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content_type: application/pdf
creator: chafner
date_created: 2023-07-04T07:46:28Z
date_updated: 2023-07-04T07:46:28Z
file_id: '13190'
file_name: supp-main.pdf
file_size: 420909
relation: supplementary_material
title: Supplemental Material with Proofs
- access_level: open_access
checksum: 4ab647e4f03c711e1e6a5fc1eb8684db
content_type: application/pdf
creator: chafner
date_created: 2023-07-04T07:46:30Z
date_updated: 2023-07-04T07:46:30Z
file_id: '13191'
file_name: supp-cheat.pdf
file_size: 430086
relation: supplementary_material
title: Cheat Sheet for Notation
- access_level: open_access
checksum: c0fd9a57d012046de90c185ffa904b76
content_type: video/mp4
creator: chafner
date_created: 2023-07-04T07:46:39Z
date_updated: 2023-07-04T07:46:39Z
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file_size: 268088064
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title: Supplemental Video
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checksum: 71b00712b489ada2cd9815910ee180a9
content_type: application/x-zip-compressed
creator: chafner
date_created: 2023-07-04T07:47:10Z
date_updated: 2023-07-04T07:47:10Z
file_id: '13193'
file_name: matlab-submission.zip
file_size: 25790
relation: supplementary_material
title: Matlab Source Code with Example
file_date_updated: 2023-07-04T08:11:28Z
has_accepted_license: '1'
intvolume: ' 42'
isi: 1
issue: '5'
keyword:
- Computer Graphics
- Computational Design
- Computational Geometry
- Shape Modeling
language:
- iso: eng
month: '09'
oa: 1
oa_version: Submitted Version
project:
- _id: 24F9549A-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '715767'
name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and
Modeling'
publication: ACM Transactions on Graphics
publication_identifier:
eissn:
- 1557-7368
issn:
- 0730-0301
publication_status: published
publisher: Association for Computing Machinery
quality_controlled: '1'
related_material:
record:
- id: '12897'
relation: part_of_dissertation
status: public
status: public
title: The design space of Kirchhoff rods
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 42
year: '2023'
...
---
_id: '12972'
abstract:
- lang: eng
text: Embroidery is a long-standing and high-quality approach to making logos and
images on textiles. Nowadays, it can also be performed via automated machines
that weave threads with high spatial accuracy. A characteristic feature of the
appearance of the threads is a high degree of anisotropy. The anisotropic behavior
is caused by depositing thin but long strings of thread. As a result, the stitched
patterns convey both color and direction. Artists leverage this anisotropic behavior
to enhance pure color images with textures, illusions of motion, or depth cues.
However, designing colorful embroidery patterns with prescribed directionality
is a challenging task, one usually requiring an expert designer. In this work,
we propose an interactive algorithm that generates machine-fabricable embroidery
patterns from multi-chromatic images equipped with user-specified directionality
fields.We cast the problem of finding a stitching pattern into vector theory.
To find a suitable stitching pattern, we extract sources and sinks from the divergence
field of the vector field extracted from the input and use them to trace streamlines.
We further optimize the streamlines to guarantee a smooth and connected stitching
pattern. The generated patterns approximate the color distribution constrained
by the directionality field. To allow for further artistic control, the trade-off
between color match and directionality match can be interactively explored via
an intuitive slider. We showcase our approach by fabricating several embroidery
paths.
acknowledgement: This work was supported by the European Research Council (ERC) under
the European Union’s Horizon 2020 research and innovation program (grant agreement
No 715767 – MATERIALIZABLE), and FWF Lise Meitner (Grant M 3319). We thank the anonymous
reviewers for their insightful feedback; Solal Pirelli, Shardul Chiplunkar, and
Paola Mejia for proofreading; everyone in the visual computing group at ISTA for
inspiring lunch and coffee breaks; Thibault Tricard for help producing the results
of Phasor Noise.
article_processing_charge: No
article_type: original
author:
- first_name: Zhenyuan
full_name: Liu, Zhenyuan
id: 70f0d7cf-ae65-11ec-a14f-89dfc5505b19
last_name: Liu
orcid: 0000-0001-9200-5690
- first_name: Michael
full_name: Piovarci, Michael
id: 62E473F4-5C99-11EA-A40E-AF823DDC885E
last_name: Piovarci
- first_name: Christian
full_name: Hafner, Christian
id: 400429CC-F248-11E8-B48F-1D18A9856A87
last_name: Hafner
- first_name: Raphael
full_name: Charrondiere, Raphael
id: a3a24133-2cc7-11ec-be88-8ddaf6f464b1
last_name: Charrondiere
- first_name: Bernd
full_name: Bickel, Bernd
id: 49876194-F248-11E8-B48F-1D18A9856A87
last_name: Bickel
orcid: 0000-0001-6511-9385
citation:
ama: Liu Z, Piovarci M, Hafner C, Charrondiere R, Bickel B. Directionality-aware
design of embroidery patterns. Computer Graphics Forum. 2023;42(2):397-409.
doi:10.1111/cgf.14770
apa: 'Liu, Z., Piovarci, M., Hafner, C., Charrondiere, R., & Bickel, B. (2023).
Directionality-aware design of embroidery patterns. Computer Graphics Forum.
Saarbrucken, Germany: Wiley. https://doi.org/10.1111/cgf.14770
'
chicago: Liu, Zhenyuan, Michael Piovarci, Christian Hafner, Raphael Charrondiere,
and Bernd Bickel. “Directionality-Aware Design of Embroidery Patterns.” Computer
Graphics Forum. Wiley, 2023. https://doi.org/10.1111/cgf.14770
.
ieee: Z. Liu, M. Piovarci, C. Hafner, R. Charrondiere, and B. Bickel, “Directionality-aware
design of embroidery patterns,” Computer Graphics Forum, vol. 42, no. 2.
Wiley, pp. 397–409, 2023.
ista: Liu Z, Piovarci M, Hafner C, Charrondiere R, Bickel B. 2023. Directionality-aware
design of embroidery patterns. Computer Graphics Forum. 42(2), 397–409.
mla: Liu, Zhenyuan, et al. “Directionality-Aware Design of Embroidery Patterns.”
Computer Graphics Forum, vol. 42, no. 2, Wiley, 2023, pp. 397–409, doi:10.1111/cgf.14770 .
short: Z. Liu, M. Piovarci, C. Hafner, R. Charrondiere, B. Bickel, Computer Graphics
Forum 42 (2023) 397–409.
conference:
end_date: 2023-05-12
location: Saarbrucken, Germany
name: 'EG: Eurographics'
start_date: 2023-05-08
date_created: 2023-05-16T08:47:25Z
date_published: 2023-05-08T00:00:00Z
date_updated: 2023-08-01T14:47:05Z
day: '08'
ddc:
- '004'
department:
- _id: BeBi
doi: '10.1111/cgf.14770 '
ec_funded: 1
external_id:
isi:
- '001000062600033'
file:
- access_level: open_access
checksum: 4c188c2be4745467a8790bbf5d6491aa
content_type: application/pdf
creator: mpiovarc
date_created: 2023-05-16T08:28:37Z
date_updated: 2023-05-16T08:28:37Z
file_id: '12974'
file_name: Zhenyuan2023.pdf
file_size: 24003702
relation: main_file
success: 1
file_date_updated: 2023-05-16T08:28:37Z
has_accepted_license: '1'
intvolume: ' 42'
isi: 1
issue: '2'
keyword:
- embroidery
- design
- directionality
- density
- image
language:
- iso: eng
month: '05'
oa: 1
oa_version: Published Version
page: 397-409
project:
- _id: eb901961-77a9-11ec-83b8-f5c883a62027
grant_number: M03319
name: Perception-Aware Appearance Fabrication
- _id: 24F9549A-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '715767'
name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and
Modeling'
publication: Computer Graphics Forum
publication_identifier:
issn:
- 1467-8659
publication_status: published
publisher: Wiley
quality_controlled: '1'
status: public
title: Directionality-aware design of embroidery patterns
tmp:
image: /images/cc_by_nc_nd.png
legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
(CC BY-NC-ND 4.0)
short: CC BY-NC-ND (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 42
year: '2023'
...
---
_id: '13049'
abstract:
- lang: eng
text: "We propose a computational design approach for covering a surface with individually
addressable RGB LEDs, effectively forming a low-resolution surface screen. To
achieve a low-cost and scalable approach, we propose creating designs from flat
PCB panels bent in-place along the surface of a 3D printed core. Working with
standard rigid PCBs enables the use of\r\nestablished PCB manufacturing services,
allowing the fabrication of designs with several hundred LEDs. \r\nOur approach
optimizes the PCB geometry for folding, and then jointly optimizes the LED packing,
circuit and routing, solving a challenging layout problem under strict manufacturing
requirements. Unlike paper, PCBs cannot bend beyond a certain point without breaking.
Therefore, we introduce parametric cut patterns acting as hinges, designed to
allow bending while remaining compact. To tackle the joint optimization of placement,
circuit and routing, we propose a specialized algorithm that splits the global
problem into one sub-problem per triangle, which is then individually solved.\r\nOur
technique generates PCB blueprints in a completely automated way. After being
fabricated by a PCB manufacturing service, the boards are bent and glued by the
user onto the 3D printed support. We demonstrate our technique on a range of physical
models and virtual examples, creating intricate surface light patterns from hundreds
of LEDs."
acknowledged_ssus:
- _id: M-Shop
acknowledgement: We thank the reviewers for the valuable feedback. We also thank the
Miba Machine Shop at ISTA, PCBWay, and PragoBoard for helping us with fabrication
and assembly. This project was supported by the European Research Council (ERC)
under the European Union’s Horizon 2020 research and innovation program (Grant Agreement
No. 715767 – MATERIALIZABLE).
article_number: '142'
article_processing_charge: No
article_type: original
author:
- first_name: Marco
full_name: Freire, Marco
last_name: Freire
- first_name: Manas
full_name: Bhargava, Manas
id: FF8FA64C-AA6A-11E9-99AD-50D4E5697425
last_name: Bhargava
orcid: 0009-0007-6138-6890
- first_name: Camille
full_name: Schreck, Camille
id: 2B14B676-F248-11E8-B48F-1D18A9856A87
last_name: Schreck
- first_name: Pierre-Alexandre
full_name: Hugron, Pierre-Alexandre
last_name: Hugron
- first_name: Bernd
full_name: Bickel, Bernd
id: 49876194-F248-11E8-B48F-1D18A9856A87
last_name: Bickel
orcid: 0000-0001-6511-9385
- first_name: Sylvain
full_name: Lefebvre, Sylvain
last_name: Lefebvre
citation:
ama: 'Freire M, Bhargava M, Schreck C, Hugron P-A, Bickel B, Lefebvre S. PCBend:
Light up your 3D shapes with foldable circuit boards. Transactions on Graphics.
2023;42(4). doi:10.1145/3592411'
apa: 'Freire, M., Bhargava, M., Schreck, C., Hugron, P.-A., Bickel, B., & Lefebvre,
S. (2023). PCBend: Light up your 3D shapes with foldable circuit boards. Transactions
on Graphics. Los Angeles, CA, United States: Association for Computing Machinery.
https://doi.org/10.1145/3592411'
chicago: 'Freire, Marco, Manas Bhargava, Camille Schreck, Pierre-Alexandre Hugron,
Bernd Bickel, and Sylvain Lefebvre. “PCBend: Light up Your 3D Shapes with Foldable
Circuit Boards.” Transactions on Graphics. Association for Computing Machinery,
2023. https://doi.org/10.1145/3592411.'
ieee: 'M. Freire, M. Bhargava, C. Schreck, P.-A. Hugron, B. Bickel, and S. Lefebvre,
“PCBend: Light up your 3D shapes with foldable circuit boards,” Transactions
on Graphics, vol. 42, no. 4. Association for Computing Machinery, 2023.'
ista: 'Freire M, Bhargava M, Schreck C, Hugron P-A, Bickel B, Lefebvre S. 2023.
PCBend: Light up your 3D shapes with foldable circuit boards. Transactions on
Graphics. 42(4), 142.'
mla: 'Freire, Marco, et al. “PCBend: Light up Your 3D Shapes with Foldable Circuit
Boards.” Transactions on Graphics, vol. 42, no. 4, 142, Association for
Computing Machinery, 2023, doi:10.1145/3592411.'
short: M. Freire, M. Bhargava, C. Schreck, P.-A. Hugron, B. Bickel, S. Lefebvre,
Transactions on Graphics 42 (2023).
conference:
end_date: 2023-08-10
location: Los Angeles, CA, United States
name: 'SIGGRAPH: Computer Graphics and Interactive Techniques Conference'
start_date: 2023-08-06
date_created: 2023-05-22T08:37:04Z
date_published: 2023-07-26T00:00:00Z
date_updated: 2024-01-29T10:30:49Z
day: '26'
ddc:
- '006'
department:
- _id: GradSch
- _id: BeBi
doi: 10.1145/3592411
ec_funded: 1
external_id:
isi:
- '001044671300108'
file:
- access_level: open_access
checksum: a0b0ba3b36f43a94388e8824613d812a
content_type: application/pdf
creator: dernst
date_created: 2023-06-19T11:02:23Z
date_updated: 2023-06-19T11:02:23Z
file_id: '13156'
file_name: 2023_ACMToG_Freire.pdf
file_size: 78940724
relation: main_file
success: 1
- access_level: open_access
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has_accepted_license: '1'
intvolume: ' 42'
isi: 1
issue: '4'
keyword:
- PCB design and layout
- Mesh geometry models
language:
- iso: eng
month: '07'
oa: 1
oa_version: Submitted Version
project:
- _id: 24F9549A-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '715767'
name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and
Modeling'
publication: Transactions on Graphics
publication_identifier:
eissn:
- 1557-7368
issn:
- 0730-0301
publication_status: published
publisher: Association for Computing Machinery
quality_controlled: '1'
status: public
title: 'PCBend: Light up your 3D shapes with foldable circuit boards'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 42
year: '2023'
...
---
_id: '11993'
abstract:
- lang: eng
text: Moulding refers to a set of manufacturing techniques in which a mould, usually
a cavity or a solid frame, is used to shape a liquid or pliable material into
an object of the desired shape. The popularity of moulding comes from its effectiveness,
scalability and versatility in terms of employed materials. Its relevance as a
fabrication process is demonstrated by the extensive literature covering different
aspects related to mould design, from material flow simulation to the automation
of mould geometry design. In this state-of-the-art report, we provide an extensive
review of the automatic methods for the design of moulds, focusing on contributions
from a geometric perspective. We classify existing mould design methods based
on their computational approach and the nature of their target moulding process.
We summarize the relationships between computational approaches and moulding techniques,
highlighting their strengths and limitations. Finally, we discuss potential future
research directions.
article_processing_charge: No
article_type: original
author:
- first_name: Thomas
full_name: Alderighi, Thomas
last_name: Alderighi
- first_name: Luigi
full_name: Malomo, Luigi
last_name: Malomo
- first_name: Thomas
full_name: Auzinger, Thomas
id: 4718F954-F248-11E8-B48F-1D18A9856A87
last_name: Auzinger
orcid: 0000-0002-1546-3265
- first_name: Bernd
full_name: Bickel, Bernd
id: 49876194-F248-11E8-B48F-1D18A9856A87
last_name: Bickel
orcid: 0000-0001-6511-9385
- first_name: Paulo
full_name: Cignoni, Paulo
last_name: Cignoni
- first_name: Nico
full_name: Pietroni, Nico
last_name: Pietroni
citation:
ama: Alderighi T, Malomo L, Auzinger T, Bickel B, Cignoni P, Pietroni N. State of
the art in computational mould design. Computer Graphics Forum. 2022;41(6):435-452.
doi:10.1111/cgf.14581
apa: Alderighi, T., Malomo, L., Auzinger, T., Bickel, B., Cignoni, P., & Pietroni,
N. (2022). State of the art in computational mould design. Computer Graphics
Forum. Wiley. https://doi.org/10.1111/cgf.14581
chicago: Alderighi, Thomas, Luigi Malomo, Thomas Auzinger, Bernd Bickel, Paulo Cignoni,
and Nico Pietroni. “State of the Art in Computational Mould Design.” Computer
Graphics Forum. Wiley, 2022. https://doi.org/10.1111/cgf.14581.
ieee: T. Alderighi, L. Malomo, T. Auzinger, B. Bickel, P. Cignoni, and N. Pietroni,
“State of the art in computational mould design,” Computer Graphics Forum,
vol. 41, no. 6. Wiley, pp. 435–452, 2022.
ista: Alderighi T, Malomo L, Auzinger T, Bickel B, Cignoni P, Pietroni N. 2022.
State of the art in computational mould design. Computer Graphics Forum. 41(6),
435–452.
mla: Alderighi, Thomas, et al. “State of the Art in Computational Mould Design.”
Computer Graphics Forum, vol. 41, no. 6, Wiley, 2022, pp. 435–52, doi:10.1111/cgf.14581.
short: T. Alderighi, L. Malomo, T. Auzinger, B. Bickel, P. Cignoni, N. Pietroni,
Computer Graphics Forum 41 (2022) 435–452.
date_created: 2022-08-28T18:17:01Z
date_published: 2022-09-01T00:00:00Z
date_updated: 2023-08-03T13:21:55Z
day: '01'
ddc:
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doi: 10.1111/cgf.14581
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T., Malomo, L., Auzinger, T., Bickel, B., Cignoni, P. and Pietroni, N. (2022),
State of the Art in Computational Mould Design. Computer Graphics Forum, which
has been published in final form at https://doi.org/10.1111/cgf.14581. This article
may be used for non-commercial purposes in accordance with Wiley Terms and Conditions
for Use of Self-Archived Versions.'
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file_size: 32480850
relation: main_file
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file_date_updated: 2022-08-28T18:18:08Z
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intvolume: ' 41'
isi: 1
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keyword:
- Computer Graphics and Computer-Aided Design
language:
- iso: eng
month: '09'
oa: 1
oa_version: Submitted Version
page: 435-452
publication: Computer Graphics Forum
publication_identifier:
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issn:
- 0167-7055
publication_status: published
publisher: Wiley
quality_controlled: '1'
scopus_import: '1'
status: public
title: State of the art in computational mould design
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 41
year: '2022'
...
---
_id: '9376'
abstract:
- lang: eng
text: This paper presents a method for designing planar multistable compliant structures.
Given a sequence of desired stable states and the corresponding poses of the structure,
we identify the topology and geometric realization of a mechanism—consisting of
bars and joints—that is able to physically reproduce the desired multistable behavior.
In order to solve this problem efficiently, we build on insights from minimally
rigid graph theory to identify simple but effective topologies for the mechanism.
We then optimize its geometric parameters, such as joint positions and bar lengths,
to obtain correct transitions between the given poses. Simultaneously, we ensure
adequate stability of each pose based on an effective approximate error metric
related to the elastic energy Hessian of the bars in the mechanism. As demonstrated
by our results, we obtain functional multistable mechanisms of manageable complexity
that can be fabricated using 3D printing. Further, we evaluated the effectiveness
of our method on a large number of examples in the simulation and fabricated several
physical prototypes.
acknowledged_ssus:
- _id: M-Shop
acknowledgement: 'We would like to thank everyone who contributed to this paper, the
authors of artworks for all the examples, including @macrovec-tor_official and Wikimedia
for the FLAG semaphore, and @pikisuper-star for the FIGURINE. The photos of iconic
poses in the teaser were supplied by (from left to right): Mike Hewitt/Olympics
Day 8 - Athletics/Gettty Images, Oneinchpunch/Basketball player training on acourt
in New york city/Shutterstock, and Andrew Redington/TigerWoods/Getty Images. We
also want to express our gratitude to Christian Hafner for insightful discussions,
the IST Austria machine shop SSU, all proof-readers, and anonymous reviewers. This
project has received funding from the European Union’s Horizon 2020 research and
innovation programme, under the Marie Skłodowska-Curie grant agreement No 642841
(DISTRO), and under the European Research Council grant agreement No 715767 (MATERIALIZABLE).'
article_number: '186'
article_processing_charge: No
article_type: original
author:
- first_name: Ran
full_name: Zhang, Ran
id: 4DDBCEB0-F248-11E8-B48F-1D18A9856A87
last_name: Zhang
orcid: 0000-0002-3808-281X
- first_name: Thomas
full_name: Auzinger, Thomas
id: 4718F954-F248-11E8-B48F-1D18A9856A87
last_name: Auzinger
orcid: 0000-0002-1546-3265
- first_name: Bernd
full_name: Bickel, Bernd
id: 49876194-F248-11E8-B48F-1D18A9856A87
last_name: Bickel
orcid: 0000-0001-6511-9385
citation:
ama: Zhang R, Auzinger T, Bickel B. Computational design of planar multistable compliant
structures. ACM Transactions on Graphics. 2021;40(5). doi:10.1145/3453477
apa: Zhang, R., Auzinger, T., & Bickel, B. (2021). Computational design of planar
multistable compliant structures. ACM Transactions on Graphics. Association
for Computing Machinery. https://doi.org/10.1145/3453477
chicago: Zhang, Ran, Thomas Auzinger, and Bernd Bickel. “Computational Design of
Planar Multistable Compliant Structures.” ACM Transactions on Graphics.
Association for Computing Machinery, 2021. https://doi.org/10.1145/3453477.
ieee: R. Zhang, T. Auzinger, and B. Bickel, “Computational design of planar multistable
compliant structures,” ACM Transactions on Graphics, vol. 40, no. 5. Association
for Computing Machinery, 2021.
ista: Zhang R, Auzinger T, Bickel B. 2021. Computational design of planar multistable
compliant structures. ACM Transactions on Graphics. 40(5), 186.
mla: Zhang, Ran, et al. “Computational Design of Planar Multistable Compliant Structures.”
ACM Transactions on Graphics, vol. 40, no. 5, 186, Association for Computing
Machinery, 2021, doi:10.1145/3453477.
short: R. Zhang, T. Auzinger, B. Bickel, ACM Transactions on Graphics 40 (2021).
date_created: 2021-05-08T17:37:08Z
date_published: 2021-10-08T00:00:00Z
date_updated: 2023-08-08T13:31:38Z
day: '08'
ddc:
- '000'
department:
- _id: BeBi
doi: 10.1145/3453477
ec_funded: 1
external_id:
isi:
- '000752079300003'
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date_updated: 2021-12-17T08:13:51Z
description: This document provides additional results and analyzes the robustness
and limitations of our approach.
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file_size: 3367072
relation: supplementary_material
title: Supplementary Material for “Computational Design of Planar Multistable Compliant
Structures”
file_date_updated: 2021-12-17T08:13:51Z
has_accepted_license: '1'
intvolume: ' 40'
isi: 1
issue: '5'
keyword:
- multistability
- mechanism
- computational design
- rigidity
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
project:
- _id: 2508E324-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '642841'
name: Distributed 3D Object Design
- _id: 24F9549A-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '715767'
name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and
Modeling'
publication: ACM Transactions on Graphics
publication_identifier:
eissn:
- 1557-7368
issn:
- 0730-0301
publication_status: published
publisher: Association for Computing Machinery
quality_controlled: '1'
status: public
title: Computational design of planar multistable compliant structures
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 40
year: '2021'
...
---
_id: '8366'
abstract:
- lang: eng
text: "Fabrication of curved shells plays an important role in modern design, industry,
and science. Among their remarkable properties are, for example, aesthetics of
organic shapes, ability to evenly distribute loads, or efficient flow separation.
They find applications across vast length scales ranging from sky-scraper architecture
to microscopic devices. But, at\r\nthe same time, the design of curved shells
and their manufacturing process pose a variety of challenges. In this thesis,
they are addressed from several perspectives. In particular, this thesis presents
approaches based on the transformation of initially flat sheets into the target
curved surfaces. This involves problems of interactive design of shells with nontrivial
mechanical constraints, inverse design of complex structural materials, and data-driven
modeling of delicate and time-dependent physical properties. At the same time,
two newly-developed self-morphing mechanisms targeting flat-to-curved transformation
are presented.\r\nIn architecture, doubly curved surfaces can be realized as cold
bent glass panelizations. Originally flat glass panels are bent into frames and
remain stressed. This is a cost-efficient fabrication approach compared to hot
bending, when glass panels are shaped plastically. However such constructions
are prone to breaking during bending, and it is highly\r\nnontrivial to navigate
the design space, keeping the panels fabricable and aesthetically pleasing at
the same time. We introduce an interactive design system for cold bent glass façades,
while previously even offline optimization for such scenarios has not been sufficiently
developed. Our method is based on a deep learning approach providing quick\r\nand
high precision estimation of glass panel shape and stress while handling the shape\r\nmultimodality.\r\nFabrication
of smaller objects of scales below 1 m, can also greatly benefit from shaping
originally flat sheets. In this respect, we designed new self-morphing shell mechanisms
transforming from an initial flat state to a doubly curved state with high precision
and detail. Our so-called CurveUps demonstrate the encodement of the geometric
information\r\ninto the shell. Furthermore, we explored the frontiers of programmable
materials and showed how temporal information can additionally be encoded into
a flat shell. This allows prescribing deformation sequences for doubly curved
surfaces and, thus, facilitates self-collision avoidance enabling complex shapes
and functionalities otherwise impossible.\r\nBoth of these methods include inverse
design tools keeping the user in the design loop."
acknowledged_ssus:
- _id: M-Shop
- _id: ScienComp
acknowledgement: "During the work on this thesis, I received substantial support from
IST Austria’s scientific service units. A big thank you to Todor Asenov and other
Miba Machine Shop team members for their help with fabrication of experimental prototypes.
In addition, I would like to thank Scientific Computing team for the support with
high performance computing.\r\nFinancial support was provided by the European Research
Council (ERC) under grant agreement No 715767 - MATERIALIZABLE: Intelligent fabrication-oriented
Computational Design and Modeling, which I gratefully acknowledge."
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Ruslan
full_name: Guseinov, Ruslan
id: 3AB45EE2-F248-11E8-B48F-1D18A9856A87
last_name: Guseinov
orcid: 0000-0001-9819-5077
citation:
ama: 'Guseinov R. Computational design of curved thin shells: From glass façades
to programmable matter. 2020. doi:10.15479/AT:ISTA:8366'
apa: 'Guseinov, R. (2020). Computational design of curved thin shells: From glass
façades to programmable matter. Institute of Science and Technology Austria.
https://doi.org/10.15479/AT:ISTA:8366'
chicago: 'Guseinov, Ruslan. “Computational Design of Curved Thin Shells: From Glass
Façades to Programmable Matter.” Institute of Science and Technology Austria,
2020. https://doi.org/10.15479/AT:ISTA:8366.'
ieee: 'R. Guseinov, “Computational design of curved thin shells: From glass façades
to programmable matter,” Institute of Science and Technology Austria, 2020.'
ista: 'Guseinov R. 2020. Computational design of curved thin shells: From glass
façades to programmable matter. Institute of Science and Technology Austria.'
mla: 'Guseinov, Ruslan. Computational Design of Curved Thin Shells: From Glass
Façades to Programmable Matter. Institute of Science and Technology Austria,
2020, doi:10.15479/AT:ISTA:8366.'
short: 'R. Guseinov, Computational Design of Curved Thin Shells: From Glass Façades
to Programmable Matter, Institute of Science and Technology Austria, 2020.'
date_created: 2020-09-10T16:19:55Z
date_published: 2020-09-21T00:00:00Z
date_updated: 2024-02-21T12:44:29Z
day: '21'
ddc:
- '000'
degree_awarded: PhD
department:
- _id: BeBi
doi: 10.15479/AT:ISTA:8366
ec_funded: 1
file:
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checksum: f8da89553da36037296b0a80f14ebf50
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file_id: '8374'
file_name: thesis_source.zip
file_size: 76207597
relation: source_file
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has_accepted_license: '1'
keyword:
- computer-aided design
- shape modeling
- self-morphing
- mechanical engineering
language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
page: '118'
project:
- _id: 24F9549A-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '715767'
name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and
Modeling'
publication_identifier:
isbn:
- 978-3-99078-010-7
issn:
- 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
record:
- id: '7151'
relation: research_data
status: deleted
- id: '7262'
relation: part_of_dissertation
status: public
- id: '8562'
relation: part_of_dissertation
status: public
- id: '1001'
relation: part_of_dissertation
status: public
- id: '8375'
relation: research_data
status: public
status: public
supervisor:
- first_name: Bernd
full_name: Bickel, Bernd
id: 49876194-F248-11E8-B48F-1D18A9856A87
last_name: Bickel
orcid: 0000-0001-6511-9385
title: 'Computational design of curved thin shells: From glass façades to programmable
matter'
type: dissertation
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
year: '2020'
...
---
_id: '7262'
abstract:
- lang: eng
text: Advances in shape-morphing materials, such as hydrogels, shape-memory polymers
and light-responsive polymers have enabled prescribing self-directed deformations
of initially flat geometries. However, most proposed solutions evolve towards
a target geometry without considering time-dependent actuation paths. To achieve
more complex geometries and avoid self-collisions, it is critical to encode a
spatial and temporal shape evolution within the initially flat shell. Recent realizations
of time-dependent morphing are limited to the actuation of few, discrete hinges
and cannot form doubly curved surfaces. Here, we demonstrate a method for encoding
temporal shape evolution in architected shells that assume complex shapes and
doubly curved geometries. The shells are non-periodic tessellations of pre-stressed
contractile unit cells that soften in water at rates prescribed locally by mesostructure
geometry. The ensuing midplane contraction is coupled to the formation of encoded
curvatures. We propose an inverse design tool based on a data-driven model for
unit cells’ temporal responses.
article_number: '237'
article_processing_charge: No
article_type: original
author:
- first_name: Ruslan
full_name: Guseinov, Ruslan
id: 3AB45EE2-F248-11E8-B48F-1D18A9856A87
last_name: Guseinov
orcid: 0000-0001-9819-5077
- first_name: Connor
full_name: McMahan, Connor
last_name: McMahan
- first_name: Jesus
full_name: Perez Rodriguez, Jesus
id: 2DC83906-F248-11E8-B48F-1D18A9856A87
last_name: Perez Rodriguez
- first_name: Chiara
full_name: Daraio, Chiara
last_name: Daraio
- first_name: Bernd
full_name: Bickel, Bernd
id: 49876194-F248-11E8-B48F-1D18A9856A87
last_name: Bickel
orcid: 0000-0001-6511-9385
citation:
ama: Guseinov R, McMahan C, Perez Rodriguez J, Daraio C, Bickel B. Programming temporal
morphing of self-actuated shells. Nature Communications. 2020;11. doi:10.1038/s41467-019-14015-2
apa: Guseinov, R., McMahan, C., Perez Rodriguez, J., Daraio, C., & Bickel, B.
(2020). Programming temporal morphing of self-actuated shells. Nature Communications.
Springer Nature. https://doi.org/10.1038/s41467-019-14015-2
chicago: Guseinov, Ruslan, Connor McMahan, Jesus Perez Rodriguez, Chiara Daraio,
and Bernd Bickel. “Programming Temporal Morphing of Self-Actuated Shells.” Nature
Communications. Springer Nature, 2020. https://doi.org/10.1038/s41467-019-14015-2.
ieee: R. Guseinov, C. McMahan, J. Perez Rodriguez, C. Daraio, and B. Bickel, “Programming
temporal morphing of self-actuated shells,” Nature Communications, vol.
11. Springer Nature, 2020.
ista: Guseinov R, McMahan C, Perez Rodriguez J, Daraio C, Bickel B. 2020. Programming
temporal morphing of self-actuated shells. Nature Communications. 11, 237.
mla: Guseinov, Ruslan, et al. “Programming Temporal Morphing of Self-Actuated Shells.”
Nature Communications, vol. 11, 237, Springer Nature, 2020, doi:10.1038/s41467-019-14015-2.
short: R. Guseinov, C. McMahan, J. Perez Rodriguez, C. Daraio, B. Bickel, Nature
Communications 11 (2020).
date_created: 2020-01-13T16:54:26Z
date_published: 2020-01-13T00:00:00Z
date_updated: 2024-02-21T12:45:02Z
day: '13'
ddc:
- '000'
department:
- _id: BeBi
doi: 10.1038/s41467-019-14015-2
ec_funded: 1
external_id:
isi:
- '000511916800015'
file:
- access_level: open_access
checksum: 7db23fef2f4cda712f17f1004116ddff
content_type: application/pdf
creator: rguseino
date_created: 2020-01-15T14:35:34Z
date_updated: 2020-07-14T12:47:55Z
file_id: '7336'
file_name: 2020_NatureComm_Guseinov.pdf
file_size: 1315270
relation: main_file
file_date_updated: 2020-07-14T12:47:55Z
has_accepted_license: '1'
intvolume: ' 11'
isi: 1
keyword:
- Design
- Synthesis and processing
- Mechanical engineering
- Polymers
language:
- iso: eng
month: '01'
oa: 1
oa_version: Published Version
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
- _id: 24F9549A-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '715767'
name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and
Modeling'
publication: Nature Communications
publication_identifier:
issn:
- 2041-1723
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
link:
- description: News on IST Homepage
relation: press_release
url: https://ist.ac.at/en/news/geometry-meets-time/
record:
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relation: dissertation_contains
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- id: '7154'
relation: research_data
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scopus_import: '1'
status: public
title: Programming temporal morphing of self-actuated shells
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 11
year: '2020'
...
---
_id: '11667'
abstract:
- lang: eng
text: The focus of classic mechanism design has been on truthful direct-revelation
mechanisms. In the context of combinatorial auctions, the truthful direct-revelation
mechanism that maximizes social welfare is the Vickrey-Clarke-Groves mechanism.
For many valuation spaces, computing the allocation and payments of the VCG mechanism,
however, is a computationally hard problem. We thus study the performance of the
VCG mechanism when bidders are forced to choose bids from a subspace of the valuation
space for which the VCG outcome can be computed efficiently. We prove improved
upper bounds on the welfare loss for restrictions to additive bids and upper and
lower bounds for restrictions to non-additive bids. These bounds show that increased
expressiveness can give rise to additional equilibria of poorer efficiency.
article_number: '5'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Paul
full_name: Dütting, Paul
last_name: Dütting
- first_name: Monika H
full_name: Henzinger, Monika H
id: 540c9bbd-f2de-11ec-812d-d04a5be85630
last_name: Henzinger
orcid: 0000-0002-5008-6530
- first_name: Martin
full_name: Starnberger, Martin
last_name: Starnberger
citation:
ama: Dütting P, Henzinger MH, Starnberger M. Valuation compressions in VCG-based
combinatorial auctions. ACM Transactions on Economics and Computation.
2018;6(2). doi:10.1145/3232860
apa: Dütting, P., Henzinger, M. H., & Starnberger, M. (2018). Valuation compressions
in VCG-based combinatorial auctions. ACM Transactions on Economics and Computation.
Association for Computing Machinery. https://doi.org/10.1145/3232860
chicago: Dütting, Paul, Monika H Henzinger, and Martin Starnberger. “Valuation Compressions
in VCG-Based Combinatorial Auctions.” ACM Transactions on Economics and Computation.
Association for Computing Machinery, 2018. https://doi.org/10.1145/3232860.
ieee: P. Dütting, M. H. Henzinger, and M. Starnberger, “Valuation compressions in
VCG-based combinatorial auctions,” ACM Transactions on Economics and Computation,
vol. 6, no. 2. Association for Computing Machinery, 2018.
ista: Dütting P, Henzinger MH, Starnberger M. 2018. Valuation compressions in VCG-based
combinatorial auctions. ACM Transactions on Economics and Computation. 6(2), 5.
mla: Dütting, Paul, et al. “Valuation Compressions in VCG-Based Combinatorial Auctions.”
ACM Transactions on Economics and Computation, vol. 6, no. 2, 5, Association
for Computing Machinery, 2018, doi:10.1145/3232860.
short: P. Dütting, M.H. Henzinger, M. Starnberger, ACM Transactions on Economics
and Computation 6 (2018).
date_created: 2022-07-27T11:46:46Z
date_published: 2018-05-01T00:00:00Z
date_updated: 2022-09-09T12:04:42Z
day: '01'
doi: 10.1145/3232860
extern: '1'
external_id:
arxiv:
- '1310.3153'
intvolume: ' 6'
issue: '2'
keyword:
- Theory of computation
- Algorithmic game theory and mechanism design
- Applied computing
- Economics
- Simplified mechanisms
- Combinatorial auctions with item bidding
- Price of anarchy
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1310.3153
month: '05'
oa: 1
oa_version: Preprint
publication: ACM Transactions on Economics and Computation
publication_identifier:
eissn:
- 2167-8383
issn:
- 2167-8375
publication_status: published
publisher: Association for Computing Machinery
quality_controlled: '1'
scopus_import: '1'
status: public
title: Valuation compressions in VCG-based combinatorial auctions
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 6
year: '2018'
...