Topology optimization of non-linear elastic structures and compliant mechanisms

Tyler E. Bruns, Daniel A. Tortorelli

Research output: Contribution to journalArticlepeer-review

Abstract

A linear elastic response is assumed in most structural topology optimization problems. While this assumption is valid for a wide variety of problems, it is not valid for structures undergoing large displacements. The elastic structural analysis used here accomodates geometric and material non-linearities. The material density field is filtered to enforce a length scale on the field variation and is penalized to remove less effective intermediate densities. The filtering scheme is embedded in the structural analysis to resolve the non-existent solution to the solid-void topology problem. In this way, we know precisely what optimization problem is being solved. The structural topology optimization formulation is also used to design compliant mechanisms.

Original languageEnglish (US)
Pages (from-to)3443-3459
Number of pages17
JournalComputer Methods in Applied Mechanics and Engineering
Volume190
Issue number26-27
DOIs
StatePublished - Mar 16 2001

ASJC Scopus subject areas

  • Computational Mechanics
  • Mechanics of Materials
  • Mechanical Engineering
  • Physics and Astronomy(all)
  • Computer Science Applications

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