Topology optimization with closed B-splines and Boolean operations

被引：69

作者：

Zhang, Weihong ^{[1
]}

Zhao, Linying ^{[1
]}

Gao, Tong ^{[1
]}

Cai, Shouyu ^{[2
]}

机构：

[1] Northwestern Polytech Univ, ESAC, Sch Mech Engn, Xian 710072, Shaanxi, Peoples R China

[2] Zhengzhou Univ, Sch Mech & Engn Sci, Zhengzhou 450001, Henan, Peoples R China

来源：

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING | 2017年 / 315卷

基金：

中国国家自然科学基金;

关键词：

Closed B-splines; Boolean operations; Finite cell method; Level-set function; Topology optimization; INTEGRATED LAYOUT DESIGN; FINITE CELL METHOD; LEVEL-SET; SHAPE OPTIMIZATION; COMPONENTS; INTERPOLATION; ALGORITHM; IMPLICIT; GEOMETRY; SYSTEMS;

D O I：

10.1016/j.cma.2016.11.015

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this work, free-form curves of closed B-splines (CBS) are introduced as basic design primitives to realize structural topology optimization in the way of shape optimization. Unlike the existing density and level-set methods, the CBS takes full advantage of its parametric form for the design deformability and flexibility with a few number of design variables, and its implicit form for Boolean operations of the structural topology accounting for any overlapping, merging and separation of different CBS no matter how geometric complexities of the CBS and the design domain are. The CBS is implemented within the computing framework of finite cell method (FCM) so that structural analysis and topology optimization can efficiently be carried out using the fixed mesh. Typical examples are tested to demonstrate the effectiveness and generality of the proposed method in dealing with engineering design problems. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：652 / 670

页数：19

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