Multiscale topology optimization of anisotropic multilayer periodic structures based on the isogeometric analysis method

IF 1.9 3区 工程技术 Q3 MECHANICS
Jianping Zhang, Jiahong Chen, Jiangpeng Peng, Yi Qiu, Zhijian Zuo, Zhiqiang Zhang
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Abstract

A multiscale topology optimization model of anisotropic multilayer periodic structures (MPS) is proposed using the isogeometric analysis (IGA) method. The integrative design of multiscale structures was realized in two stages: the distribution optimization of multilayer periodic materials, which determines the types, distribution, and volume fraction of microstructures, and parallel topology optimization, which optimizes the macrostructure and various microstructures simultaneously. To implement the multilayer periodic constraint, the relative density and sensitivity of the IGA control points were equally redistributed. The correctness and advantages of the proposed model were confirmed by comparing its results with those obtained using finite element methods, and the optimal IGA microstructures displayed smoother boundaries. In addition, the multiscale MPS of the cantilever was 3D printed, confirming the practicality of the proposed model. The influences of the regularization scheme, multilayer periodic constraints, and Poisson's ratio factor on the results of the multiscale multilayer periodic optimization were explored, and recommendations for proper values of these parameters were provided to enhance the structural stiffness.

Abstract Image

基于等几何分析方法的各向异性多层周期结构的多尺度拓扑优化
利用等几何分析(IGA)方法提出了各向异性多层周期结构(MPS)的多尺度拓扑优化模型。多尺度结构的综合设计分两个阶段实现:一是多层周期材料分布优化,即确定微结构的类型、分布和体积分数;二是并行拓扑优化,即同时优化宏观结构和各种微结构。为了实现多层周期约束,IGA 控制点的相对密度和灵敏度被平均重新分配。通过与使用有限元方法得出的结果进行比较,证实了所提模型的正确性和优势,而且优化的 IGA 微结构显示出更平滑的边界。此外,悬臂的多尺度 MPS 已实现 3D 打印,证实了所提模型的实用性。研究还探讨了正则化方案、多层周期约束和泊松比系数对多尺度多层周期优化结果的影响,并就这些参数的适当取值提出了建议,以增强结构刚度。
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来源期刊
Meccanica
Meccanica 物理-力学
CiteScore
4.70
自引率
3.70%
发文量
151
审稿时长
7 months
期刊介绍: Meccanica focuses on the methodological framework shared by mechanical scientists when addressing theoretical or applied problems. Original papers address various aspects of mechanical and mathematical modeling, of solution, as well as of analysis of system behavior. The journal explores fundamental and applications issues in established areas of mechanics research as well as in emerging fields; contemporary research on general mechanics, solid and structural mechanics, fluid mechanics, and mechanics of machines; interdisciplinary fields between mechanics and other mathematical and engineering sciences; interaction of mechanics with dynamical systems, advanced materials, control and computation; electromechanics; biomechanics. Articles include full length papers; topical overviews; brief notes; discussions and comments on published papers; book reviews; and an international calendar of conferences. Meccanica, the official journal of the Italian Association of Theoretical and Applied Mechanics, was established in 1966.
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