FSAE赛车车架结构的拓扑优化设计  

Topology optimization of FSAE car frame

作　　者：李芳[1] 何婷婷[1] 

机构地区：[1]浙江工业大学机械工程学院,浙江杭州310014

出　　处：《浙江工业大学学报》2016年第4期369-374,共6页Journal of Zhejiang University of Technology

摘　　要：为提高FSAE赛车车架的力学性能并实现轻量化,对赛车车架进行了拓扑优化设计.首先,对车队设计的初始车架进行强度和刚度分析.然后,根据车架的总体尺寸建立壳体CAD模型,将CAD模型保存成ParaSolid格式,并将几何模型导入HyperWorks中,用户配置模块设置为OptiStruct,对几何模型进行几何清理、划分单元、分配材料属性,建立用于拓扑优化的有限元模型,进行拓扑优化计算.根据拓扑结构,结合大赛规则和车架上各部件的装配要求设计出新车架.对新车架进行有限元静力学分析,包括几种典型工况下的强度和刚度分析,新车架的分析结果验证了结构设计的合理性,通过与初始车架分析结果相比较,表明了拓扑优化设计方法对赛车车架的设计具有可行性和有效性.In order to improve the mechanical property and reduce the weight of FSAE car frame,topology optimization design for the car frame was conducted.At first,strength and stiffness analysis of the initial frame which was designed by the car team was conducted.Then,set up the CAD model of frame,saved the CAD model into ParaSolid format,used OptiStruct module of HyperWorks to clean up the geometric model,divide mesh and assign material properties for building topology optimization model of the car frame.Referring to the topological structure,combined with the competition rules and requirements of assembling for each part of the frame,a new FSAE car frame structure was proposed.The finite element analysis of the frame structure was conducted which includes strength and stiffness analysis in typical working conditions.The results verify that the structure design of frame is rational.By comparing the analysis results of the initial frame and the results of the new frame,it shows that the topology optimization design of the car frame is feasible and effective.

关 键 词：FSAE赛车 车架 拓扑优化 有限元分析 强度 刚度 

分 类 号：TH12[机械工程—机械设计及理论]