| 关于动应力强度因子的有限元分析 |
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| 引用本文： | 陈清军,刘定如,赵祖耀. 关于动应力强度因子的有限元分析[J]. 华北电力大学学报(自然科学版), 1992, 0(1) |
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| 作者姓名： | 陈清军 刘定如 赵祖耀 |
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| 作者单位： | 哈尔滨工业大学，华北电力学院，华北电力学院 |
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| 摘 要： | 本文用三角形四分点元及J(t)积分两种有限元方法进行了动应力强度因子的计算分析。结果表明,前者采用较少单元即可获得比较满意的结果,而后者可获得更高精度的K_I(t)值。
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| 关 键 词： | 动应力强度因子 有限元法 三角形四分点元 J(t)积分 |
ON THE NUMERICAL COMPUTATION OF DYNAMIC STRESS INTENSITY FACTORS BY FEM |
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| Abstract: | In this paper, two finite element methods for the numerical computation of dynamic stress intensity factors are studied, which include the triangular quarterpoint element method and the J-integral method. It is shown that the comparatively pleased results can be got by fewer elements using the former method, and more accurate numerical values of K_I(t) can be got by the use of the latter. |
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