| 一种变幅载荷下裂纹扩展预测模型 |
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| 引用本文： | 王志智,聂学州.一种变幅载荷下裂纹扩展预测模型[J].航空学报,1987,8(4):186-190. |
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| 作者姓名： | 王志智 聂学州 |
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| 作者单位： | 飞行强度研究所
(王志智)，飞行强度研究所(聂学州) |
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| 摘 要： | 目前关于预测变幅载荷下裂纹扩展模型有几十种。近年来提出的一些改进后的新模型除考虑拉伸超载的“迟滞效应”外,还考虑了压缩载荷的“加速效应”。如Willenborg/Chang,MPYZ等模型。这些模型在一定范围内都能够预测变幅载荷下裂纹扩展。但这些模型目前还都是以线弹性断裂力学为基础,以应力强度因子范围⊿K为描
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| 收稿时间： | 1986-11-17; |
A MODEL FOR PREDICTION OF FATIGUE CRACK GROWTH UNDER VARIABLE AMPLITUDE LOADING |
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| Wang Zhizhi,Mie Xuezhou.A MODEL FOR PREDICTION OF FATIGUE CRACK GROWTH UNDER VARIABLE AMPLITUDE LOADING[J].Acta Aeronautica et Astronautica Sinica,1987,8(4):186-190. |
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| Authors: | Wang Zhizhi Mie Xuezhou |
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| Institution: | The Aircraft Strength Research Instiute |
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| Abstract: | A new elastic-plastic model for prediction of fatigue crack growth under varable amplitude loading is presented in this paper.The cyclic J-integral, J, is used as described parameter in the model.The model takes into account"retardation effect" caused by tensile overloads and "acceleration effect" caused by compression load cycle. What is more, it takes into account plastic effects on crack growth. The predicted lifes by using this model under spectrum loading are in good agreement with experimental data. |
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