| 缺口件长短裂纹的分界及其确定 |
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| 引用本文： | 尚德广,王德俊.缺口件长短裂纹的分界及其确定[J].东北大学学报(自然科学版),1997,18(5):469-472. |
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| 作者姓名： | 尚德广 王德俊 |
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| 作者单位： | 东北大学机械工程学院 |
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| 摘 要： | 以４５号钢正火材料角边Ｖ形缺口试件为研究对象，对缺口根部应力应变场进行了仔细地分析和研究，利用弹塑性断裂力学理论，提出缺口根部分布Ｊ积分的概念。
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| 关 键 词： | 应力强度因子 缺口 裂纹 应力应变场 分界点 |
A Method of Determining the Separating Points for Fatigue Short and Long Cracks at Notch |
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| Shang Deguang,Wang Dejun.A Method of Determining the Separating Points for Fatigue Short and Long Cracks at Notch[J].Journal of Northeastern University(Natural Science),1997,18(5):469-472. |
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| Authors: | Shang Deguang Wang Dejun |
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| Abstract: | The single edge V shaped notch specimens are used as the research subject. The stress strain field at notch root is studied and analyzed in detail. The concept of distribution J integral at notch root is put forward by means of elastic plastic theory. A kind of new method for determining the separating points for fatigue short cracks and long cracks is given,which has a clear physical significance. Good agreement between theoretical results and experimental results has been achieved. |
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| Keywords: | fatigue short crack fatigue long crack cyclic J integral stress intensity factor |
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