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Mixed reliability-oriented topology optimization for thermo-mechanical structures with multi-source uncertainties
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DOI：10.1007/s00366-022-01662-1.png)
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摘要
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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.
Keyword:
Reliability-based topology optimization
Coupled thermo-mechanical problem
Multi-source uncertainties
Fuzzy
Probabilistic
期刊
IF:
4.9
论文数:
2.7K
被引数:
9.3K
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