An Efficient Isogeometric Topology Optimization Method Using DOF Reduction and Convergence Acceleration

被引：0
|
作者：
Yang Y. [1 ]
Zheng W. [1 ]
Wang Y. [1 ,2 ]
机构：
[1] National Engineering Research Center of Novel Equipment for Polymer Processing, South China University of Technology, Guangzhou
[2] State Key Laboratory of Digital Manufacturing Equipment and Technology, Huazhong University of Science and Technology, Wuhan
来源：
Zhongguo Jixie Gongcheng/China Mechanical Engineering | 2022年 / 33卷 / 23期
关键词：
convergence acceleration; degree of freedom(DOF) reduction; efficient optimization method; isogeometric analysis; topology optimization;
D O I：
10.3969/j.issn.1004-132X.2022.23.005
中图分类号：
学科分类号：
摘要：
In order to improve the efficiency of isogeometric topology optimization(ITO), an efficient ITO method was proposed, which accelerated ITO from DOF reduction and convergence acceleration. The DOF reduction algorithm included DOF reduction based on displacement changes and empty elements, and the convergence acceleration algorithm included design variable reduction and gray-scale suppression. Through 2D and 3D cases, it is demonstrated that the speedup ratio of the proposed efficient ITO method may reach to 1.56～6.02 compared with traditional ITO when optimization accuracy is ensured, which significantly improves the efficiency of ITO and provides a strong support for the efficient and high-quality design of product structures. © 2022 China Mechanical Engineering Magazine Office. All rights reserved.
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页码：2811 / 2821
页数：10
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