| 带斜裂纹模拟圆筒容器静压爆破和疲劳试验 |
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| 引用本文： | 刘火祥,郭荣元.带斜裂纹模拟圆筒容器静压爆破和疲劳试验[J].焊接学报,1981(3):111-122. |
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| 作者姓名： | 刘火祥 郭荣元 |
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| 作者单位： | 东方锅炉厂
(刘火祥)，东方锅炉厂(郭荣元) |
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| 摘 要： | 本文提出了斜裂纹鼓胀效应修正系数公式.用该公式计算了带斜裂纹圆筒爆破载荷和开裂载荷,结果与实测大致相符,其平均误差在8%左右,可用于工程计算.本文还研究了斜裂纹疲劳扩展规律.采用直线法和投影法计算了疲劳扩展后的斜裂纹尖端应力强度因子。按照Paris 裂纹扩展方程整理了数据,然后获得了该钢种扩展速率方程,并论及了斜裂纹的扩展角问题.
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| 收稿时间： | 1980/10/1 0:00:00 |
HYDRAULIC DESTRUCTION AND FATIGUE TESTS OF CYLINDRICAL MODEL VESSEL WITH DECLIVOUS CRACKS |
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| Liu Huoxiang and Guo Rongyuan.HYDRAULIC DESTRUCTION AND FATIGUE TESTS OF CYLINDRICAL MODEL VESSEL WITH DECLIVOUS CRACKS[J].Transactions of The China Welding Institution,1981(3):111-122. |
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| Authors: | Liu Huoxiang and Guo Rongyuan |
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| Affiliation: | Dong Fang Boiler Works and Dong Fang Boiler Works |
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| Abstract: | In this paper we present a relation for the bulge effect factor of declivous cracks.With this relation,the calculated demolition load and cracking load are in line with their corresponding experimental results,the average error being about 8%.The said relation is therefore good for engineering practices.The law of declivous fatigue crack growth is examined,using direct method and projective method to define the stress intensity factor at the top of a declivous crack after fatigue growth.Pursuing the Paris relation for crack growth rate in processing the data,we have obtained a crack growth rate formulation for 18MnMoNb steel.The fatigue growth angle of declivous crack is also discussed. |
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