| 厚壁圆筒半椭圆表面裂纹应力强度因子的有限元计算 |
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| 引用本文： | 黄士振.厚壁圆筒半椭圆表面裂纹应力强度因子的有限元计算[J].南京理工大学学报(自然科学版),1990(4). |
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| 作者姓名： | 黄士振 |
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| 作者单位： | 华东工学院应用力学系 |
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| 摘 要： | 本文计算了受内压厚壁圆筒内壁具有1条,2条及4条径向半椭圆表面裂纹的应力强度因子。应力强度因子由裂纹面上的张开位移推算。位移则利用通用有限元分析程序 SAP5算得,将该程序中两种三维单元适当搭配可大大减少所用的自由度.
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| 关 键 词： | 表面裂纹 应力强度因子 有限元法 |
Evaluation of Stress Intensity Factor for Half-Elliptical Surface Cracks in Thick-Walled Cyinder by Finite Element Method |
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| Huang Shizhen.Evaluation of Stress Intensity Factor for Half-Elliptical Surface Cracks in Thick-Walled Cyinder by Finite Element Method[J].Journal of Nanjing University of Science and Technology(Nature Science),1990(4). |
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| Authors: | Huang Shizhen |
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| Institution: | Department of Applied Mechanics |
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| Abstract: | This paper calculated stress intensity factor K_1 for 1,2 and 4 scmi-clliptical surface cracks in the inside of a pressurized thick-walled cylinder.The K_1 values were calculated from the opening displacements on the face of the cracks.The general finite element program SAP5 is used for analysing the displacements.Proper assign- ment of the two kinds of 3-D three-dimensional elements in this program will significantly reduce the number of digree of freedom. |
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| Keywords: | surface cracks stress intensity factor finite element method |
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