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Reliability-based topology optimization for continuum structure with nonlinear dynamic response
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DOI：10.1016/j.ymssp.2024.112129.png)
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Abstract
En 中文
The nonlinear dynamic response topology optimization based on viscoelastic material can enhance the dynamic performance of structures. However, inevitable uncertain parameters, including material properties, geometric dimensions, and boundary conditions, significantly impact the optimization results. To address this issue, a nonlinear dynamic response reliability- based topology optimization model is established using viscoelastic material. To improve computational efficiency and accuracy, a modified performance function shifting method is proposed, which transforms the complex reliability-based topology optimization model into an equivalent deterministic optimization model by using a modified performance shifting scalar. Furthermore, the design and random sensitivities of the nonlinear performance constraint are derived using the adjoint variable method. Three examples are tested to verify the effectiveness of the proposed method, demonstrating that it improves optimization efficiency with sufficient accuracy.
Keywords:
Reliability-based topology optimization
Nonlinear
Dynamic response
Uncertainty
Journal
IF:
8.9
Papers:
1.3W
Citations:
6.6W