Topology Optimization of Geometrically Nonlinear Structures Under Thermal-Mechanical Coupling
作者机构：Faculty of Materials and ManufacturingBeijing University of TechnologyBeijing 100124China
出 版 物：《Acta Mechanica Solida Sinica》 (固体力学学报（英文版）)
年 卷 期：2023年第36卷第1期
页 面：22-33页
核心收录：
学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）]
基 金：provided by the National Natural Science Foundation ofChina(Grant No.11872080) Beijing Natural Science Foundation(Grant No.3192005)
主 题：Topology optimization Geometric nonlinearity Thermal-mechanical coupling Stress constraints
摘 要：A geometrically nonlinear topology optimization(GNTO)method with thermal–mechanical coupling is ***,the new expression of element coupling stress due to superimposed mechanical and thermal loading is obtained based on the geometrically nonlinear finite element *** lightweight topology optimization(TO)model under stress constraints is established to satisfy the strength ***,the distortion energy theory is introduced to transform themodel into structural strain energy constraints in order to solve the implicit relationship between stress constraints and design ***,the sensitivity analysis of the optimization model is derived,and the model is solved by the method of moving asymptotes(MMA).Numerical examples show that temperature has a significant effect on the optimal configuration,and the TO method considering temperature load is closer to engineering design *** proposed method can be extended to the GNTO design with multiple physical field coupling.
维普期刊数据库