基于Abaqus的农用车制动踏板刚强度分析及拓扑优化

为了验证某新型农用车制动踏板的刚度特性与强度特性是否合格，采用Creo软件建立仿真分析模型，基于Abaqus软件对其进行材料设置、添加约束、加载集中力和划分网格，分析踏板在承受横向左右各100 N载荷和法向500、2 000和2 500 N载荷时的位移变形和应力分布。分析结果表明，其横向位移之和、承受法向500 N载荷时的位移量、2 000 N载荷产生的永久变形量及2 500 N载荷时的最大应力均满足工况要求。对制动踏板进行了拓扑优化分析，并对结构优化后的模型进行了静力学分析，结果表明，符合工况标准的要求，可以作为该型农用车制动踏板轻量化设计的依据。 

Rigidity and Strength Analysis and Topology Optimization of Agricultural Vehicles Brake Pedal Based on Abaqus

In order to verify whether the rigidity characteristics and strength characteristics of a new type of agricultural vehicle brake pedal were qualified, Creo software was used to establish its simulation analysis model, and then based on Abaqus software, it was used to set materials, add constraints, load concentrated forces and divide meshes．The displacement deformation and stress distribution of the pedal under lateral load of 100 N and the normal load of 500, 2 000 and 2 500 N were analyzed．Results showed that sum of lateral displacement, displacement under normal direction of 500 N, permanent deformation generated by 2 000 N and the maximum stress under 2 500 N all met requirements of working conditions．Topology optimization analysis of brake pedal was carried out, and static analysis of model after structural optimization was carried out．Results showed that it met requirements of working condition standard and could be used as the basis for lightweight design of brake pedal of this type of agricultural vehicle．