| 半椭圆表面裂纹应力强度因子计算的边界元法 |
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| 引用本文： | 王志群.半椭圆表面裂纹应力强度因子计算的边界元法[J].航空学报,1989,10(7):379-382. |
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| 作者姓名： | 王志群 |
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| 作者单位： | 华东工学院 |
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| 摘 要： | 工程结构常存在表面裂纹或缺陷,例如飞机上的航炮经多次发射,在内膛将产生表面龟裂;航空发动机轮盘和叶片也可能有表面裂纹。由于表面裂纹是三维问题,给问题的解决带来了很大的困难。边界元方法为求解三维问题带来了方便。
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| 关 键 词： | 边界元法 应力强度因子 半椭圆表面裂纹 |
| 收稿时间： | 1988-03-19; |
THE BOUNDARY ELEMENT METHOD FOR CALCULATING THE STRESS INTENSITY FACTORS OF A SEMI-ELLIPTICAL SURFACE CRACK |
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| East China Institute of Technology Wang Zhiqun.THE BOUNDARY ELEMENT METHOD FOR CALCULATING THE STRESS INTENSITY FACTORS OF A SEMI-ELLIPTICAL SURFACE CRACK[J].Acta Aeronautica et Astronautica Sinica,1989,10(7):379-382. |
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| Authors: | East China Institute of Technology Wang Zhiqun |
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| Institution: | East China Institute of Technology Wang Zhiqun |
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| Abstract: | This paper studies the boundary element method for calculating the stress intensity factors of a semi-elliptical surface crack. The suitable locations and the optimum size of the singular isoparametric elements are presented. To verify the conclusion of this paper the stress-intensity factors of a semi-elliptical surface crack in a tension specimen and a cylinder are calculated. |
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| Keywords: | boundary element method stress intensity factor semi- elliptical surface crack |
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