基于疲劳设计理论解决轿车车身后部开裂问题  

Solve Rear Body Cracking Problem of Passenger Car Based on the Theory of Fatigue

作　　者：汪沛伟[1] 龚侃[1] 袁亮[1] 张铁[1] 宋瀚[1] 

机构地区：[1]东风汽车公司技术中心,武汉430070

出　　处：《汽车科技》2016年第6期108-111,共4页Auto Sci-Tech

摘　　要：本文针对项目开发过程中的试验开裂问题,基于疲劳设计的基本理论,对影响车身疲劳耐久性能的因素进行分析。提出改善思路及改善方向,通过大扭转静态仿真分析方法,快速提出了有效的改善方案。该方案通过试验样车耐久测试,验证切实可行,为今后车身结构解决疲劳失效的问题提供重要参考。Based on the basic theory of fatigue design, analyze the factors influencing the fatigue performance of the car body. For cars at the back of the cracking problems, and put forward improvement ideas, two simulation methods as well as the dynamic and static, fast effective improvement scheme was put forward. The plan by the experimental prototype durability test to validate the feasible, at the back of the car body and the other for the future provide a valuable reference for solving the problem of fatigue failure of the structure. Key Words：

关 键 词：疲劳耐久 应力集中 大扭转工况静态分析 

分 类 号：U463.36[机械工程—车辆工程]