First and second order unconditionally energy stable schemes for topology optimization based on phase field method

被引：20

作者：

Yu, Qian ^{[1
]}

Wang, Kunyang ^{[1
]}

Xia, Binhu ^{[1
]}

Li, Yibao ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, Sch Math & Stat, Xian 710049, Peoples R China

来源：

APPLIED MATHEMATICS AND COMPUTATION | 2021年 / 405卷

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Topology optimization; Phase field method; Second order; Unconditional energy stability; CONVEX SPLITTING SCHEMES; ALLEN-CAHN; STRUCTURAL TOPOLOGY; NUMERICAL APPROXIMATIONS; SHAPE; MODEL; EQUATION;

D O I：

10.1016/j.amc.2021.126267

中图分类号：

O29 [应用数学];

学科分类号：

070104 ;

摘要：

In this paper, we use the phase field method to deal with the compliance minimization problem in topology optimization. A modified Allen-Cahn type equation with two penalty terms is proposed. The equation couples the diffusive interface dynamics and the linear elasticity mechanics. We propose the first-and second-order unconditionally energy stable schemes for the evolution of phase field modeling. The linearly stabilized splitting scheme is applied to improve the stability. The Crank-Nicolson scheme is applied to achieve second-order accuracy in time. We prove the unconditional stabilities of our schemes in analysis. The finite element method and the projected conjugate gradient method combining with fast fourier transform are used to solve the compliance minimization problem. Several experimental results are presented to verify the efficiency and accuracy of the proposed schemes. (c) 2021 Elsevier Inc. All rights reserved.

引用

页数：16

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