| 直升机发动机部件裂纹扩展寿命估算研究 |
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| 引用本文： | 蒋建军,王安平,程军利.直升机发动机部件裂纹扩展寿命估算研究[J].直升机技术,2010(1):31-33. |
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| 作者姓名： | 蒋建军 王安平 程军利 |
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| 作者单位： | 1. 总参陆航部驻西安地区军事代表室,陕西,西安,710065
2. 总参陆航部驻景德镇地区军事代表室,江西,景德镇,333001 |
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| 摘 要： | 本文基于应力强度因子理论分析,给出了裂纹断裂和扩展程度的预测方法并导出了裂纹断裂临界尺寸公式;通过描述裂纹扩展速率的Paris公式,导出了裂纹扩展寿命计算公式,最后给出了某型直升机发动机部件裂纹扩展寿命估算的实例。
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| 关 键 词： | 断裂 应力强度因子 裂纹扩展 寿命 |
The Research on Crackle Propagation Life-Span of an Aero-Engine Components |
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| Authors: | JIANG Jianjun WANG Anping CHENG Junli |
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| Institution: | JIANG Jianjun1,WANG Anping2,CHENG Junli1(1.The PLA Greneral Staff\'s Army Aviation Burean , Work in the Xi\'an Delegate Office,Xi\'an 710068,China,2.The PLA General Staff\'s Army Aviation Burean , Work in the Jingdezhen Delegate Office,Jingdezhen 333001,China) |
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| Abstract: | Based on the theory analysis of stress strength factor,a method distinguishing the degree of the crack and propagation is developed and the critical crack size formula is given.Through the analysis of the formulation Paris depicting the crack propagation rate,an equation of estimating the crack propagation life-span is brought out.An example using this way is given at the end of this essay. |
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| Keywords: | crack stress strength factor crack propagation life-span |
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