| 疲劳裂纹扩展参数研究 |
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| 引用本文： | 倪惠玲,傅祥炯.疲劳裂纹扩展参数研究[J].航空学报,1995,16(2):55-60. |
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| 作者姓名： | 倪惠玲 傅祥炯 |
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| 作者单位： | 西北工业大学结构强度研究所, 西安, 710071 |
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| 摘 要： | 在大量拉－压超载实验的基础上导出考虑拉－压超载中压缩载荷影响的参数———超载截止比γＳＲ的计算式，并提出简单超载截止比γＳＯ的实验测定方法。将参数γＳＲ用于裂纹扩展寿命预测模型，获得良好的效果。
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| 关 键 词： | 拉-压超载 超载比 裂纹扩展 |
| 收稿时间： | 1994-06-28 |
| 修稿时间： | 1994-09-26 |
A PARAMETER STUDY OF FATIGUE CRACK PROPAGATION |
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| Ni Huiling,Fu Xiangjiong.A PARAMETER STUDY OF FATIGUE CRACK PROPAGATION[J].Acta Aeronautica et Astronautica Sinica,1995,16(2):55-60. |
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| Authors: | Ni Huiling Fu Xiangjiong |
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| Institution: | Northwestern Polytechnical University,Xi'an,710072 |
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| Abstract: | Based on plenty of tensile-compressive overload test,a formula of overload shut-off ratio γ SR ,the parameter which takes account of reducing overload retardation effect by compressive load,is proposed.For delermining the value of overload shut-off ratio γ SO of single overload,a test method is suggested here as well.It is shown that the prediction of crack propagation life with the parameter γ SR involved in is well correlated with the test results of random load spectra. |
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| Keywords: | tensile-compressive overload overload ratio crack propagation |
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