RELIABILITY-BASED TOPOLOGY OPTIMIZATION DESIGN METHOD FOR PART STRUCTURE BY CONSIDERING BOUNDED HYBRID UNCERTAINTY

WIPO Patent Application WO/2022/188001

A1

A reliability-based topology optimization design method for a part structure by considering the bounded hybrid uncertainty, comprising the following steps: considering the uncertainty in the manufacturing service of the part structure, and respectively describing an external load having insufficient samples and the material attribute of sufficient samples as an interval variable and a bounded probability variable; discretizing a design domain of the part structure, setting physical and geometric constraints, and establishing a reliability-based topology optimization design model; solving using a moving asymptote algorithm: decoupling the probability interval uncertainty, and determining the worst working condition using the constraint performance gradient; defining the worst working condition performance fluctuation and calculating the constraint performance reliability; and finally, calculating the gradient of target and constraint functions on a design variable for iteration. The optimization design model established by the method truly reflects the distribution characteristics of the multi-source uncertainty of the part structure, is efficient in solving, and has good engineering application value.

CHENG JIN (CN)
LU WEI (CN)
LIU ZHENYU (CN)
LIU DAXIN (CN)
TAN JIANRONG (CN)

PCT/CN2021/079563

September 15, 2022

March 08, 2021

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UNIV ZHEJIANG (CN)

G06F30/23; G06F30/13; G06F30/17

CN111475976A	2020-07-31
CN107515963A	2017-12-26
CN106650147A	2017-05-10
CN110795836A	2020-02-14
CN108009381A	2018-05-08

HANGZHOU QIUSHI PATENT OFFICE CO., LTD. (CN)

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