| 压力容器非正交接管区表面裂纹疲劳扩展特性研究 |
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| 引用本文： | 金志江.压力容器非正交接管区表面裂纹疲劳扩展特性研究[J].中国机械工程,2004,15(17):1577-1579,1593. |
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| 作者姓名： | 金志江 |
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| 作者单位： | 浙江大学化工机械研究所,杭州,310027 |
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| 基金项目： | 浙江省科技攻关计划重点项目 ( 2 0 0 3C2 10 3 3 ) |
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| 摘 要： | 对一台压力容器非正交接管区表面裂纹的疲劳扩展进行了试验研究和计算机模拟跟踪，获得了非正交接管区表面裂纹疲劳扩展的特性、形貌、速率及寿命。试验与计算机跟踪结果比较表明：在相同循环次数下，有限元的扩展深度大于实测值，但二者基本吻合，误差为10％左右；二者的裂纹扩展方向是不一致的。
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| 关 键 词： | 压力容器 非正交接管 表面裂纹 疲劳扩展 有限元 |
| 文章编号： | 1004-132X(2004)17-1577-03 |
Research on Fatigue Propagation Characteristics of Surface Cracks in Non-orthogonal Nozzle Area of Pressure Vessel |
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| Jin Zhijiang Zhejiang University,Hangzhou.Research on Fatigue Propagation Characteristics of Surface Cracks in Non-orthogonal Nozzle Area of Pressure Vessel[J].China Mechanical Engineering,2004,15(17):1577-1579,1593. |
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| Authors: | Jin Zhijiang Zhejiang University Hangzhou |
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| Affiliation: | Jin Zhijiang Zhejiang University,Hangzhou,310027 |
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| Abstract: | Experimental research and computer simulation tracing on fatigue propagation of surface cracks in non-orthogonal nozzle area of a real pressure vessel had been developed,and the characteristics,shape,rate and life of fatigue crack propagation of non-orthogonal nozzle area were obtained. The results make it known that: in the same cycle degree, the crack propagation depth of finite element is greater than experiments, the inaccuracy between expriments and computer simulation tracing is lower than 10%, the tracing conclusion is securer than the experimental one; both directions of crack propagation are not identical. |
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| Keywords: | pressure vessel non-orthogonal nozzle surface crack fatigue propagation finite element |
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