| 基于有限元法的轿车车身结构及焊点疲劳寿命分析 |
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| 引用本文： | 杜中哲,朱平,何俊,韩旭.基于有限元法的轿车车身结构及焊点疲劳寿命分析[J].汽车工程,2006,28(10):944-947. |
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| 作者姓名： | 杜中哲 朱平 何俊 韩旭 |
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| 作者单位： | 上海交通大学机械与动力工程学院,上海,200030;上海交通大学机械与动力工程学院,上海,200030;上海交通大学机械与动力工程学院,上海,200030;上海交通大学机械与动力工程学院,上海,200030 |
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| 基金项目： | 国家高技术研究发展计划(863)项目(2004AA411010)资助。 |
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| 摘 要： | 以某型轿车车身为例,建立车身的有限元模型,在对车身进行了单位激励下的冲击响应分析并得到应力应变分布结果的基础上,利用M iner损伤累积准则,在MSC.Fatigue软件中对车身的疲劳寿命进行仿真分析,估算出该型车在D级路面上行驶时的结构及焊点疲劳寿命,分析结果显示出的危险部位与实车实验基本一致。
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| 关 键 词： | 轿车车身 结构疲劳寿命 焊点疲劳寿命 有限元法 |
| 收稿时间： | 2005-10-08 |
| 修稿时间： | 2005-10-082005-12-09 |
Fatigue Life Analysis of Car Body Structure and Spot Weld Based on FEM |
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| Du Zhongzhe,Zhu Ping,He Jun,Han Xu.Fatigue Life Analysis of Car Body Structure and Spot Weld Based on FEM[J].Automotive Engineering,2006,28(10):944-947. |
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| Authors: | Du Zhongzhe Zhu Ping He Jun Han Xu |
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| Institution: | School of Mechanical Engineering, Shanghai Jiaotong University,Shanghai 200030 |
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| Abstract: | A finite element model for a car body is built,an impact response analysis under unit excitation on the body is performed and the distributions of stress and strain are obtained.Based on these,the fatigue life of car body is analyzed with Miner damage summation rule through a simulation using software MSC-Fatigue and the fatigue life of body structure and spot weld of the car running on D-grade road is estimated,which basically agrees with real car test. |
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| Keywords: | Car body Structural fatigue life Spot weld fatigue life FEM |
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