On projection methods, convergence and robust formulations in topology optimization

Fengwen Wang, Boyan Stefanov Lazarov, Ole Sigmund

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Mesh convergence and manufacturability of topology optimized designs have previously mainly been assured using density or sensitivity based filtering techniques. The drawback of these techniques has been gray transition regions between solid and void parts, but this problem has recently been alleviated using various projection methods. In this paper we show that simple projection methods do not ensure local mesh-convergence and propose a modified robust topology optimization formulation based on erosion, intermediate and dilation projections that ensures both global and local mesh-convergence.
Original languageEnglish
JournalStructural and Multidisciplinary Optimization
Volume43
Issue number6
Pages (from-to)767-784
ISSN1615-147X
DOIs
Publication statusPublished - 2011

Keywords

  • Compliant mechanisms
  • Manufacturing constraints
  • Topology optimization
  • Robust design

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