基于各向正交惩罚材料密度法的汽车控制臂的优化设计  

Topology Optimization of an Automobile Control-arm Using Solid Isotropic Material with Penalization(SIMP)

作　　者：陈善志[1] 方宗德[1] 吉强[1] 宋云强[1] 

机构地区：[1]西北工业大学机电学院,西安710072

出　　处：《机械科学与技术》2008年第7期963-965,970,共4页Mechanical Science and Technology for Aerospace Engineering

基　　金：国家发改委汽车电子产业化专项项目(2005;第1898号)资助

摘　　要：建立了以刚度最优值(最小柔顺性)为目标函数,体积约束作为约束条件,有限元单元的相对密度为设计变量的汽车控制臂结构拓扑优化模型,对多功能车上使用的A型控制臂结构在概念设计阶段进行了拓扑优化。优化过程中采用各向正交惩罚材料密度法(SIMP)理论建立数学模型,并应用优化准则算法求解数学模型,得到控制臂的概念设计优化模型,为结构详细设计阶段的形状优化和尺寸优化提供设计依据。从结构概念设计的结果知:优化设计过程较稳定、能有效满足概念设计的需要。The optimal topology model of an automobile control-arm structure is established, with its hardness optimization as the target function, its cubage limitation as the restricting condition and the relative density of the limited meta-cell as its design variable. Topology optimization of an A-typed control-arm structure multi-functional autocar is performed in the concept design period. During the optimization, theory of solid isotropic material with penalization （SIMP） is adopted to set up the mathematical model, and the optimizing rules in SIMP is used to resolve the mathematical model. The obtained optimal model of the control-arm in the concept design can be further used in the figure and size optimization in the detailed structural design. Simulation results of the structural optimization of an A-typed control-arm show that our model and method is feasible and effective.

关 键 词：拓扑优化 SIMP 控制臂 

分 类 号：U463.320.2[机械工程—车辆工程]