Shape optimization by the level-set method applied to architectured flexural panels

L. Laszczyk, R. Dendievel, G. Parry, Y. Bréchet, O. Bouaziz

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

Abstract

Architectured materials (such as foams, corrugated structures, trusses, hollow spheres) are used, alone or as core material in a sandwich structure, for flexural panels. The idea is to take advantage of the architecture to combine multiple functionalities (e.g. lightweight, stiffness, thermal insulation). Therefore it seems relevant to design the distribution of matter in order to obtain the desired performances. Multi-functional and conflicting specifications lead to non-trivial selection and/or optimization problems. It is hence proposed to use numerical shape optimization procedures into a "material by design" approach applied to periodically architectured flexural panels. A finite element analysis on the unit cell is presented to compute the effective stiffness of each panel depending on its architecture. Then, shape optimization by the level-set method is made on the unit cell with regard to the effective stiffness and a volume constraint. Multiple start geometries and objective functions are tested. The four-point bending test, which usually characterizes flexural panels performance, is used as a reference for both homogenization and optimization.

Original languageEnglish
Title of host publicationHigh Performance Structures and Materials V, HPSM 2010
Pages439-450
Number of pages12
DOIs
Publication statusPublished - 2010
Externally publishedYes
EventInternational Conference on High Performance Structures and Materials 2010 - Tallinn, Estonia
Duration: 26 Jul 201028 Jul 2010
Conference number: 5th

Publication series

NameWIT Transactions on the Built Environment
Volume112
ISSN (Print)1743-3509

Conference

ConferenceInternational Conference on High Performance Structures and Materials 2010
Abbreviated titleHPM 2010
CountryEstonia
CityTallinn
Period26/07/1028/07/10

Keywords

  • architectured materials
  • flexural panel
  • homogenization
  • level-set method
  • sandwich structures
  • shape optimization

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