考虑应变率效应的钢制车轮冲击仿真与试验  

Simulation and Experimental Study of Steel Wheel Impact Test Considering Strain Rate Effect

作　　者：尹冀[1] 朱平[1] 章斯亮[1] 

机构地区：[1]上海交通大学机械与动力工程学院,上海200240

出　　处：《上海交通大学学报》2013年第6期967-971,978,共6页Journal of Shanghai Jiaotong University

摘　　要：针对应变率效应对钢制车轮冲击性能的影响,通过对钢制轮毂进行不同应变率下的材料实验,拟合出综合考虑多种应变率的轮毂材料本构模型.基于该本构模型,根据GB/T 15704-1995建立13°冲击工况下钢制车轮冲击有限元模型,结合冲击物理试验对比分析冲击仿真结果,验证本构模型和冲击模型的正确性.提出一套基于冲击性能的高精度钢制车轮仿真分析方法,为我国汽车钢制车轮的设计与开发提供借鉴.Aimed at the strain rate effect on impact characteristics of steel wheel, the constitutive model of steel wheel material was established by taking material tests on steel wheels in different strain rates. Based on the constitutive model of steel wheel material, a detailed finite element model of steel wheel impact test was established according to GB/T 15704-1995, and impact simulation results were analyzed in compari- sion with the results of impact physical test to verify the constitutive model and impact simulation model. Finally, a method of high-precision simulation analysis of steel wheel impact characteristics was proposed, hoping to provide reference for design and development of steel wheel.

关 键 词：钢制车轮 应变率效应 本构模型 冲击仿真与试验 

分 类 号：U463.34[机械工程—车辆工程]