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| Reliability-based topology optimization of rigid structures using performance measure approach |
| Received:November 24, 2022 Revised:February 04, 2023 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20221124004 |
| KeyWord:performance measure approach variable density method reliability topology optimization |
| Author | Institution |
| 易平 |
大连理工大学 建设工程学部, 大连 |
| 李娜 |
大连理工大学 建设工程学部, 大连 |
| 邢艳 |
大连理工大学 建设工程学部, 大连 |
| 张恩华 |
大连理工大学 建设工程学部, 大连 |
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| Abstract: |
| Compared with size optimization and shape optimization, structural topology optimization can save materials and improve the design to a greater extent.There must be various uncertain factors in practical engineering, so reliability-based topology optimization (RBTO) considering uncertainty has gradually become a research hotspot.Considering the uncertainty of load and material parameters and using performance measure approach for reliability evaluation, this paper has carries out RBTO of rigid structures based on variable density method.Through examples of a four-corner-supported flat panel, an L-shaped beam and a 2-D and a 3-D cantilever beams, the effects of target reliability index, and the number and coefficient of variation of random variables on the topological configuration and volume fraction are analyzed.The results show that RBTO can obtain a rigid structure that meets both the optimal force-transferring-path and the reliability requirements. |
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