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arXiv 2004.13571cs.CEcs.NAmath.NAmath.OC
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多功能超材料的优化设计

Design of multifunctional metamaterials using optimization

Ewan Fong, Sadik L. Omairey, Peter D. Dunning

摘要:

本文探讨了使用优化设计的多功能超材料,并提出了一种方法来构建一个设计包络的潜在属性。由Ai和Gao(2017)提出的热机械超材料被用作研究的主题。使用基于有限元的周期性均匀化来计算超材料的属性,该均匀化利用开源插件(EasyPBC)在Abaqus中实现。使用pyOpt包中基于粒子群的优化方法解决了几个优化问题。一系列的约束优化问题被用来构建一个设计包络的潜在性能。与目前使用参数研究的做法相比,设计包络更充分地捕捉了超材料的潜力。这是因为优化器可以同时更改所有参数以找到最佳设计。这表明了使用基于优化的方法来设计和探索多功能超材料特性的潜力。该方法是通用的,可以应用于任何超材料的设计,假设存在一个精确的数值模型来评估其属性。

英文摘要:

This paper explores the use of optimization to design multifunctional metamaterials, and proposes a methodology for constructing a design envelope of potential properties. A thermal-mechanical metamaterial, proposed by Ai and Gao (2017), is used as the subject of the study. The properties of the metamaterial are computed using finite element-based periodic homogenization, which is implemented in Abaqus utilizing an open-source plugin (EasyPBC). Several optimization problems are solved using a particle swarm-based optimization method from the pyOpt package. A series of constrained optimization problems are used to construct a design envelop of potential properties. The design envelope more fully captures the potential of the metamaterial, compared with the current practice of using parametric studies. This is because the optimizer can change all parameters simultaneously to find the optimal design. This demonstrates the potential of using an optimization-based approach for designing and exploring multifunctional metamaterial properties. This proposed approach is general and can be applied to any metamaterial design, assuming an accurate numerical model exists to evaluate its properties.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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