---
_id: '9208'
abstract:
- lang: eng
  text: 'Bending-active structures are able to efficiently produce complex curved
    shapes from flat panels. The desired deformation of the panels derives from the
    proper selection of their elastic properties. Optimized panels, called FlexMaps,
    are designed such that, once they are bent and assembled, the resulting static
    equilibrium configuration matches a desired input 3D shape. The FlexMaps elastic
    properties are controlled by locally varying spiraling geometric mesostructures,
    which are optimized in size and shape to match specific bending requests, namely
    the global curvature of the target shape. The design pipeline starts from a quad
    mesh representing the input 3D shape, which defines the edge size and the total
    amount of spirals: every quad will embed one spiral. Then, an optimization algorithm
    tunes the geometry of the spirals by using a simplified pre-computed rod model.
    This rod model is derived from a non-linear regression algorithm which approximates
    the non-linear behavior of solid FEM spiral models subject to hundreds of load
    combinations. This innovative pipeline has been applied to the project of a lightweight
    plywood pavilion named FlexMaps Pavilion, which is a single-layer piecewise twisted
    arch that fits a bounding box of 3.90x3.96x3.25 meters. This case study serves
    to test the applicability of this methodology at the architectural scale. The
    structure is validated via FE analyses and the fabrication of the full scale prototype.'
acknowledgement: 'The FlexMaps Pavilion has been awarded First Prize at the “Competition
  and Exhibition of innovative lightweight structures” organized by the IASS Working
  Group 21 within the FORM and FORCE, joint international conference of IASS Symposium
  2019 and Structural Membranes 2019 (Barcelona, 7-11 October 2019) with the following
  motivation: “for its structural innovation of bending-twisting system, connection
  constructability and exquisite craftmanship”[20]. The authors would like to acknowledge
  the Visual Computing Lab Staff of ISTI - CNR, in particular Thomas Alderighi, Marco
  Callieri, Paolo Pingi; Antonio Rizzo of IPCF - CNR; and the Administrative Staff
  of ISTI - CNR. This research was partially funded by the EU H2020 Programme EVOCATION:
  Advanced Visual and Geometric Computing for 3D Capture, Display, and Fabrication
  (grant no. 813170).'
article_number: '1505'
article_processing_charge: No
article_type: original
author:
- first_name: Francesco
  full_name: Laccone, Francesco
  last_name: Laccone
- first_name: Luigi
  full_name: Malomo, Luigi
  last_name: Malomo
- first_name: Jesus
  full_name: Perez Rodriguez, Jesus
  id: 2DC83906-F248-11E8-B48F-1D18A9856A87
  last_name: Perez Rodriguez
- first_name: Nico
  full_name: Pietroni, Nico
  last_name: Pietroni
- first_name: Federico
  full_name: Ponchio, Federico
  last_name: Ponchio
- first_name: Bernd
  full_name: Bickel, Bernd
  id: 49876194-F248-11E8-B48F-1D18A9856A87
  last_name: Bickel
  orcid: 0000-0001-6511-9385
- first_name: Paolo
  full_name: Cignoni, Paolo
  last_name: Cignoni
citation:
  ama: 'Laccone F, Malomo L, Perez Rodriguez J, et al. A bending-active twisted-arch
    plywood structure: Computational design and fabrication of the FlexMaps Pavilion.
    <i>SN Applied Sciences</i>. 2020;2(9). doi:<a href="https://doi.org/10.1007/s42452-020-03305-w">10.1007/s42452-020-03305-w</a>'
  apa: 'Laccone, F., Malomo, L., Perez Rodriguez, J., Pietroni, N., Ponchio, F., Bickel,
    B., &#38; Cignoni, P. (2020). A bending-active twisted-arch plywood structure:
    Computational design and fabrication of the FlexMaps Pavilion. <i>SN Applied Sciences</i>.
    Springer Nature. <a href="https://doi.org/10.1007/s42452-020-03305-w">https://doi.org/10.1007/s42452-020-03305-w</a>'
  chicago: 'Laccone, Francesco, Luigi Malomo, Jesus Perez Rodriguez, Nico Pietroni,
    Federico Ponchio, Bernd Bickel, and Paolo Cignoni. “A Bending-Active Twisted-Arch
    Plywood Structure: Computational Design and Fabrication of the FlexMaps Pavilion.”
    <i>SN Applied Sciences</i>. Springer Nature, 2020. <a href="https://doi.org/10.1007/s42452-020-03305-w">https://doi.org/10.1007/s42452-020-03305-w</a>.'
  ieee: 'F. Laccone <i>et al.</i>, “A bending-active twisted-arch plywood structure:
    Computational design and fabrication of the FlexMaps Pavilion,” <i>SN Applied
    Sciences</i>, vol. 2, no. 9. Springer Nature, 2020.'
  ista: 'Laccone F, Malomo L, Perez Rodriguez J, Pietroni N, Ponchio F, Bickel B,
    Cignoni P. 2020. A bending-active twisted-arch plywood structure: Computational
    design and fabrication of the FlexMaps Pavilion. SN Applied Sciences. 2(9), 1505.'
  mla: 'Laccone, Francesco, et al. “A Bending-Active Twisted-Arch Plywood Structure:
    Computational Design and Fabrication of the FlexMaps Pavilion.” <i>SN Applied
    Sciences</i>, vol. 2, no. 9, 1505, Springer Nature, 2020, doi:<a href="https://doi.org/10.1007/s42452-020-03305-w">10.1007/s42452-020-03305-w</a>.'
  short: F. Laccone, L. Malomo, J. Perez Rodriguez, N. Pietroni, F. Ponchio, B. Bickel,
    P. Cignoni, SN Applied Sciences 2 (2020).
date_created: 2021-02-28T23:01:25Z
date_published: 2020-09-01T00:00:00Z
date_updated: 2021-03-03T09:43:14Z
day: '01'
department:
- _id: BeBi
doi: 10.1007/s42452-020-03305-w
intvolume: '         2'
issue: '9'
language:
- iso: eng
month: '09'
oa_version: None
publication: SN Applied Sciences
publication_identifier:
  eissn:
  - '25233971'
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'A bending-active twisted-arch plywood structure: Computational design and
  fabrication of the FlexMaps Pavilion'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 2
year: '2020'
...