| 计算应力强度因子的奇异单元法 |
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| 引用本文： | 李翠华.计算应力强度因子的奇异单元法[J].西安交通大学学报,1991,25(6):23-28,38. |
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| 作者姓名： | 李翠华 |
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| 作者单位： | 西安交通大学数学系 |
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| 摘 要： | 本文构造了一种新的三维奇异元,证明了其奇异性,就均匀拉伸的圆柱杆带圆环形和半椭圆形表面裂纹前缘的应力强度因子进行了有限元——奇异元计算,其数值结果与已有结果吻合得很好;根据大量的计算结果,给出了后一种裂纹情形的近似计算公式。
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| 关 键 词： | 奇异性 应力强度因子 有限元法 |
COMPUTING STRESS-INTENSITY FACTORS WITH THE SINGULAR ELEMENT METHOD |
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| Li Cuihua.COMPUTING STRESS-INTENSITY FACTORS WITH THE SINGULAR ELEMENT METHOD[J].Journal of Xi'an Jiaotong University,1991,25(6):23-28,38. |
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| Authors: | Li Cuihua |
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| Institution: | Li Cuihua Department of Mathematics |
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| Abstract: | In this paper, a new singular element is constructed and the singularity is
proved. The singular finite element method is used to compute stress-intensity
factors along the circumferential cracks and the half elliptic cracks on the sur-
face of a bar. The numerical results are compared with those published in 4],
7]. According to these results, a stress-intensity factor formulation is obtained. |
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| Keywords: | singularity stress intensity factor finite element method |
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