| 随机载荷作用下微车车身结构疲劳寿命仿真分析 |
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| 引用本文： | 文孝霞,杜子学,姜保军,李芹英.随机载荷作用下微车车身结构疲劳寿命仿真分析[J].现代制造工程,2012(7):78-82,112. |
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| 作者姓名： | 文孝霞 杜子学 姜保军 李芹英 |
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| 作者单位： | 1. 重庆交通大学机电与汽车工程学院,重庆,400074
2. 重庆长安汽车研究院,重庆,400056 |
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| 摘 要： | 以微型车车身结构为研究对象,合理简化结构后建立车身有限元模型,确定载荷形式后,对车身进行静应力分析。以应力分析计算结果为基础,在动力学软件中计算获取车身承受的随机载荷,结合材料的S-N曲线和线性累积损伤理论,运用Goodman平均应力修正法,对车体进行全寿命疲劳分析,根据车身疲劳分析结果可知,该微型车车身结构疲劳寿命满足强度和疲劳性能要求。
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| 关 键 词： | 微型车 疲劳寿命 有限元方法 疲劳强度 仿真 |
Simulation analysis of fatigue life of micro-car body structure under random load |
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| Wen Xiaoxia
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Du Zixue
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Jiang Baojun
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Li Qinying.Simulation analysis of fatigue life of micro-car body structure under random load[J].Modern Manufacturing Engineering,2012(7):78-82,112. |
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| Authors: | Wen Xiaoxia Du Zixue Jiang Baojun Li Qinying |
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| Affiliation: | 1 Chongqing Jiaotong University,Chongqing 400074,China; 2 School of Machine and Automobile,Chongqing 400056,China) |
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| Abstract: | A domestic micro-car body was regarded as a research object,after simplifying the structure,finite element model for micro-car body was established,after determining the reasonable form of load,static stress analysis of body are preceded.Based on the results of the stress analysis,to obtain random load on the body in dynamics software simulation,combined with the material of the S-N curve and linear cumulative damage theory,to apply the Goodman stress method,fatigue life of mini-car body structures was analyzed.According to body fatigue analysis,the micro-car body structure fatigue life and fatigue strength to meet the performance requirements. |
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| Keywords: | mini-car fatigue life finite element method fatigue strength simulation |
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