Topology Optimization of Stiffener Layout Design for Box Type Load-Bearing Component under Thermo-Mechanical Coupling  

作　　者：Zhaohui Yang Tianhua Xiong Fei Du Baotong Li 

机构地区：[1]Northwestern Polytechnical University,Xi’an,710072,China [2]Research&Development Institute of Northwestern Polytechnical University in Shenzhen,Shenzhen,518057,China [3]School of Mechanical Engineering,Xi’an Jiaotong University,Xi’an,710054,China

出　　处：《Computer Modeling in Engineering & Sciences》2023年第5期1701-1718,共18页工程与科学中的计算机建模（英文）

基　　金：supported by National Natural Science Foundation of China (No.52075445);Science,Technology and Innovation Commission of Shenzhen Municipality (No.JCYJ20190806151013025).

摘　　要：The structure optimization design under thermo-mechanical coupling is a difficult problem in the topology optimization field.An adaptive growth algorithm has become a more effective approach for structural topology optimization.This paper proposed a topology optimization method by an adaptive growth algorithm for the stiffener layout design of box type load-bearing components under thermo-mechanical coupling.Based on the stiffness diffusion theory,both the load stiffness matrix and the heat conduction stiffness matrix of the stiffener are spread at the same time to make sure the stiffener grows freely and obtain an optimal stiffener layout design.Meanwhile,the objectives of optimization are the minimization of strain energy and thermal compliance of the whole structure,and thermo-mechanical coupling is considered.Numerical studies for square shells clearly show the effectiveness of the proposed method for stiffener layout optimization under thermo-mechanical coupling.Finally,the method is applied to optimize the stiffener layout of box type load-bearing component of themachining center.The optimization results show that both the structural deformation and temperature of the load-bearing component with the growth stiffener layout,which are optimized by the adaptive growth algorithm,are less than the stiffener layout of shape‘#’stiffener layout.It provides a new solution approach for stiffener layout optimization design of box type load-bearing components under thermo-mechanical coupling.

关 键 词：THERMO-MECHANICAL topology optimization adaptive growth algorithm load stiffness matrix heat conduction stiffness matrix 

分 类 号：TJ7[兵器科学与技术—武器系统与运用工程]