Mixed reliability-oriented topology optimization for thermo-mechanical structures with multi-source uncertainties

Meng Z., Guo L., YILDIZ A. R., Wang X.

ENGINEERING WITH COMPUTERS, vol.38, no.6, pp.5489-5505, 2022 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 38 Issue: 6
  • Publication Date: 2022
  • Doi Number: 10.1007/s00366-022-01662-1
  • Journal Name: ENGINEERING WITH COMPUTERS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Applied Science & Technology Source, Communication Abstracts, Compendex, Computer & Applied Sciences, INSPEC, Metadex, zbMATH, Civil Engineering Abstracts
  • Page Numbers: pp.5489-5505
  • Keywords: Reliability-based topology optimization, Coupled thermo-mechanical problem, Multi-source uncertainties, Fuzzy, Probabilistic, LEVEL SET METHOD, DESIGN OPTIMIZATION, CONTINUUM STRUCTURES, INTERVAL, NRBTO, MODEL
  • Bursa Uludag University Affiliated: Yes

Abstract

With the rapid development of topology optimization methodology in engineering application, how to deal with the multi-source uncertainties incurs more and more attention. In this study, an efficient single-loop method is proposed for reliability-based topology optimization (RBTO) of coupled thermo-mechanical continuum structure under multi-source uncertainties. To this end, a novel coupled thermo-mechanical RBTO model composed of triple-nested loops is first constructed based on fuzzy and probability theories, which aims to deal with the multi-source uncertainty factors, such as temperature rise fluctuation, thermal load variation, material property uncertainty, and manufacture tolerance. Second, a new mixed RBTO approach with single-loop is adopted to eliminate the nested triple loops, which aims to promote computational efficiency. Finally, the effectiveness and high performance of the proposed method are validated through a cantilever beam, clamped beam, and three-dimensional structure.