Graded-density Lattice Structure Optimization Design Based on Topology Optimization

被引：7
|
作者：
Liao Z. [1 ]
Wang Y. [1 ]
Wang S. [2 ]
机构：
[1] National Engineering Research Center of Novel Equipment for Polymer Processing, School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou
[2] School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan
来源：
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2019年 / 55卷 / 08期
关键词：
3D printing; FEA; Graded-density; Lattice structure; Topology optimization;
D O I：
10.3901/JME.2019.08.065
中图分类号：
学科分类号：
摘要：
Lattice material is an ultra-light, high-strength, high-performance porous material. At present, the lattice structure is mainly constructed with uniform density. Different parts made of the lattice material are subjected to different loads, which results in a problem that the optimal performance of the lattice material with uniform density cannot be fully achieved. In view of the above problems, a multiscale topology optimization method based on homogenization method is proposed, which realizes the graded-density lattice structure, and the optimal graded-density lattice structure can be obtained according to the actual load to achieve optimal performance. Taking the automobile connecting rod as an example, comparing with the method of beam-model-based lattice optimization from the commercial software HyperWorks, the proposed method has better performance on mass reduction and the stress distribution. Therefore, the method obtains a better-property design, which is more suitable for the optimal design of graded-density lattice structures. © 2019 Journal of Mechanical Engineering.
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页码：65 / 72
页数：7
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