A level set driven concurrent reliability-based topology optimization (LS-CRBTO) strategy considering hybrid uncertainty inputs and damage defects updating

Li Z.; Wang L.; Lv T.

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A level set driven concurrent reliability-based topology optimization (LS-CRBTO) strategy considering hybrid uncertainty inputs and damage defects updating

机译：A level set driven concurrent reliability-based topology optimization (LS-CRBTO) strategy considering hybrid uncertainty inputs and damage defects updating

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? 2022 Elsevier B.V.With the diversification of engineering structure performance requirements and the continuous development of structural design refinement, it puts forward higher requirements for lightweight design of structures in terms of concurrent design and reliability design. It is necessary to develop advanced design technology. This paper focuses on the influence of multi-source hybrid uncertainties and defect damage in the design process and proposes a concurrent reliability-based topology optimization design method. Based on the collocation method, the propagation analysis of hybrid uncertainties is realized. A performance reduction method considering defect damage is proposed. Furthermore, the parameter iteration strategy of the optimization criterion method is improved. Based on the sensitivity analysis of a series of parameters, the gradient optimization algorithm is used to solve the optimization model. Finally, three numerical examples are given to illustrate the effectiveness and necessity of the proposed method.

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《Computer Methods in Applied Mechanics and Engineering》 |2023年第15期|1-24|共24页
作者
Li Z.; Wang L.; Lv T.;
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作者单位

Institute of Solid Mechanics School of Aeronautic Science and Engineering Beihang University;

Institute of Solid Mechanics School of Aeronautic Science and Engineering Beihang UniversityInstitute of Solid Mechanics School of Aeronautic Science and Engineering Beihang University||Aircraft and Propulsion Laboratory Ningbo Institute of Technology Bei;

Shanghai Marine Equipment Research Institute;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
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Concurrent topology optimization; Defect damage; Hybrid uncertainties; Parameterized level set method; Reliability-based topology optimization;

A level set driven concurrent reliability-based topology optimization (LS-CRBTO) strategy considering hybrid uncertainty inputs and damage defects updating

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