| 一种计及压载的裂纹扩展寿命模型 |
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| 引用本文： | 陈瑞峰,何宇廷.一种计及压载的裂纹扩展寿命模型[J].大连理工大学学报,1997,37(4):480-484. |
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| 作者姓名： | 陈瑞峰 何宇廷 |
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| 作者单位： | [1]大连理工大学工业装备结构分析国家重点实验室 [2]西北工业大学飞机系 |
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| 基金项目： | 辽宁省博士起动基金,大连理工大学工业装备结构分析国家重点实验室开放基金 |
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| 摘 要： | 在随机载荷谱中，往往存在压缩载荷的作用，而现有的模型对压载问题的考虑较少，基于闭合理论，建立了一种计及压缩的裂纹扩展寿命模型，并对短裂纹问题以及三维裂纹问题进行了相应的处理，计算结果表明，此模型精度高，适用范围广。
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| 关 键 词： | 载荷谱 裂纹扩展 压缩载荷 疲劳寿命模型 |
Crack propagation model with considering effect of compress load |
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| Chen Ruifeng,Chen Haoran,Ren Mingfa.Crack propagation model with considering effect of compress load[J].Journal of Dalian University of Technology,1997,37(4):480-484. |
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| Authors: | Chen Ruifeng Chen Haoran Ren Mingfa |
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| Abstract: | There are much compressive load in random loading spectrum. Yet the present model of fatigue crack propagation has less considering effect of compressive load. This paper is based on crack closure theory, proposes a fatigue crack propagation model which takes into account the effect of the compressive load in the loading spectrum. And the solutions to the problem of short crack and the problem of three dimensional crack are provided. The computed results show that the model is accurate in precision and widely applicable. |
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| Keywords: | compressive load crack closure/random loading spectrum |
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