Isogeometric Bi-Directional Evolutionary Structural Optimization

被引：18
|
作者：
Yin, Ling [1 ]
Zhang, Fei [1 ]
Deng, Xiaowei [2 ,3 ]
Wu, Peng [1 ]
Zeng, Hongxin [4 ,5 ]
Liu, Mei [6 ]
机构：
[1] Dongguan Univ Technol, Sch Mech Engn, Dongguan 523808, Peoples R China
[2] Univ Hong Kong, Dept Civil Engn, Hong Kong, Peoples R China
[3] Dalian Univ Technol, State Key Lab Struct Anal Ind Equipment, Dalian 116024, Peoples R China
[4] Dongguan Univ Technol, Sch Econ & Management, Dongguan 523808, Peoples R China
[5] Hunan Prov Key Lab Hlth Maintenance Mech Equipmen, Xiangtan 411201, Peoples R China
[6] Guangdong Univ Petrochem Technol, Sch Automat, Maoming 525000, Peoples R China
来源：
IEEE ACCESS | 2019年 / 7卷
关键词：
Isogeometric analysis (IGA); topology optimization; bi-directional evolutionary structural optimization; NURBS filter; FLUID-STRUCTURE INTERACTION; TOPOLOGY OPTIMIZATION; CONTINUUM STRUCTURES; DESIGN; ALGORITHM; CAD; NURBS; SHAPE;
D O I：
10.1109/ACCESS.2019.2927820
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Isogeometric analysis (IGA), due to its high efficiency and accuracy, can be replaced by the conventional finite element method in the topology optimizations (TOs). In this paper, we present an efficient isogeometric TO method based on the scheme of bi-directional evolutionary structural optimization (BESO). The structural response analysis is implemented by the IGA, and the detailed derivation is introduced. Based on the local support property of the non-uniform rational B-spline (NURBS), a NURBS filter is proposed to smooth the sensitivity numbers, of which NURBS space is different from that used in the IGA as long as the element spans keep consistency. Three benchmark numerical examples with different filters and mesh sizes are presented to validate the stability and mesh-dependency of the proposed isogeometric TO method.
引用
收藏
页码：91134 / 91145
页数：12
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