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research-article

Structural topology optimization using a moving morphable component-based method considering geometrical nonlinearity

[+] Author and Article Information
Benliang Zhu

Guangdong Key Laboratory of Precision Equipment and Manufacturing Technology, South China University of Technology, Guangzhou, Guangdong, 510640, China
meblzhu@scut.edu.cn

Qi Chen

Guangdong Key Laboratory of Precision Equipment and Manufacturing Technology, South China University of Technology, Guangzhou, Guangdong, 510640, China
1213862687@qq.com

Rixin Wang

Guangdong Key laboratory of Precision Equipment and Manufacturing Technology, South China University of Technology, Guangzhou, Guangdong, 510640, China
837693963@qq.com

Xianmin Zhang

Guangdong Key Laboratory of Precision Equipment and Manufacturing Technology, South China University of Technology, Guangzhou, Guangdong, 510640, China
zhangxm@scut.edu.cn

1Corresponding author.

ASME doi:10.1115/1.4040547 History: Received March 07, 2018; Revised June 04, 2018

Abstract

Moving morphable component(MMC)-based method is a new developed approach for topology optimization. In the MMC-based method, the design problem is formulated using a set of morphabe components and the optimized structural topologies are obtained by optimizing shapes, sizes and locations of these components. However, the optimization process often tends to break the connection between the load area and the supported boundary. This disconnection has a strong influence on the convergence, especially when the large deformation effects are considered. In this paper, a method is developed for topology optimization of geometrically nonlinear structures by using MMC-based method. A scheme is developed to deal with the disconnection issue in the optimization process. Several numerical examples are used to demonstrate the validity of the proposed method.

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