| 汽车零件强度、寿命与可靠性分析与模型 |
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| 引用本文： | 赵广耀,陈立杰,谢里阳. 汽车零件强度、寿命与可靠性分析与模型[J]. 材料与冶金学报, 2007, 6(1) |
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| 作者姓名： | 赵广耀 陈立杰 谢里阳 |
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| 作者单位： | 东北大学;Department of Mechanics,Tsinghua University,Beijing 100084,China |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： |
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| 关 键 词： | welding structure FFE fatigue strengthen reliability 汽车零件 强度 寿命 可靠性分析 模型 strengthened modeling Analysis component automobile reliability assessment instead interference stochastic load environment common cause failures call viewpoint |
Analysis and modeling of the strength,life and reliability of an automobile component |
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| ZHAO Guang-yao,CHEN Li-jie,XIE Li-yang. Analysis and modeling of the strength,life and reliability of an automobile component[J]. Journal of Materials and Metallurgy, 2007, 6(1) |
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| Authors: | ZHAO Guang-yao CHEN Li-jie XIE Li-yang |
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| Abstract: | The elasto-plastic stress/strain behavior of an automobile rear axle was analyzed by three-dimension finite element method.Based on the stress in critical area where fatigue crack appears,the fatigue life of the welded structure was predicted using the critical shear stress plane criterion.To improve the fatigue property of the rear-axle,the welding-seam was strengthened by both pellet spraying and plasma melting,and evident improvement was experimentally illustrated.Based on the viewpoint that a complex component is also a system in the respect of reliability assessment and statistical dependence among component failures(i.e.the so call"common cause failure")is inherent for system under stochastic load environment,a system-level load-strength interference model was presented and the reliability of the rear axle was estimated as a system,instead of a component. |
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| Keywords: | welding structure FFE fatigue strengthen reliability |
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