| 微动疲劳寿命可靠性分析方法研究 |
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| 引用本文： | 崔海涛,汪震.微动疲劳寿命可靠性分析方法研究[J].航空动力学报,2009,24(6). |
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| 作者姓名： | 崔海涛 汪震 |
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| 作者单位： | 南京航空航天大学 能源与动力学院,南京航空航天大学 |
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| 摘 要： | 针对结构的微动疲劳问题，发展了一种寿命可靠性分析方法。在微动条件下，接触区域处于多轴应力状态，采用基于临界平面法的多轴疲劳参数对结构的微动疲劳寿命进行预测。在确定性寿命计算的基础上，考虑弹性模量、摩擦系数以及寿命预测模型中材料常数的随机性，利用响应面方法，结合Monte-Carlo模拟技术获得结构微动疲劳寿命可靠性模型。最后将此方法用于燕尾榫结构的微动疲劳寿命可靠性分析，验证了所提出方法的可行性和有效性。
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| 关 键 词： | 微动疲劳寿命 可靠性 燕尾榫 临界平面法 Monte-Carlo法 |
| 收稿时间： | 6/3/2008 11:44:37 AM |
Research on fretting fatigue life reliability analysis method |
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| Cui Haitao and Wang Zhen.Research on fretting fatigue life reliability analysis method[J].Journal of Aerospace Power,2009,24(6). |
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| Authors: | Cui Haitao and Wang Zhen |
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| Institution: | College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics,Nanjing University of Aeronautics and Astronautics |
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| Abstract: | A fretting fatigue reliability analysis method was developed. The contact area is in a multi-axial stress state under fretting conditions. The multi-axial fatigue parameter based on the critical plane was used to predict the fretting fatigue life. On the basis of calculating determinate life, considering the randomicity of modulus of elasticity, friction coefficient and the material constant in the life model, the fretting fatigue life reliability model was obtained by Monte-Carlo simulation method combined with the response surface method. Finally, the method was applied to analyze fretting fatigue life reliability of dovetail joint, and it was proved to be feasible and valid. |
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| Keywords: | Fretting fatigue life Reliability Dovetail joints Critical plane Monte-Carlo method |
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