| 有限域中高精度应力集中系数和应力强度因子表达式 |
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| 引用本文： | 王启智.有限域中高精度应力集中系数和应力强度因子表达式[J].机械强度,2001,23(3):358-361. |
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| 作者姓名： | 王启智 |
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| 作者单位： | 四川大学 土木力学系, |
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| 基金项目： | 国家自然科学基金资助项目 (1 9872 0 4 6)~~ |
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| 摘 要： | 在近似解析的基础上，采用渐近（极限）修正的方法，推出有限域中3个典型的孔、洞和裂纹模型的应力集中系数和应力强度因子的高精度表达式。
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| 关 键 词： | 应力集中系数 应力强度因子 有限域 工程结构 |
| 修稿时间： | 1999年7月15日 |
HIGH-ACCURACY EXPRESSIONS OF STRESS CONCENTRATION FACTOR AND STRESS INTENSITY FACTOR IN FINITE DOMAINS |
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| WANG Qizhi.HIGH-ACCURACY EXPRESSIONS OF STRESS CONCENTRATION FACTOR AND STRESS INTENSITY FACTOR IN FINITE DOMAINS[J].Journal of Mechanical Strength,2001,23(3):358-361. |
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| Authors: | WANG Qizhi |
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| Abstract: | Based on an approximate analysis, simple closed form solutions of stress concentration factor and stress intensity factor for three typical models of circular hole, spherical cavity, and crack in finite domains are derived respectively. Then a method of asymptotic modification, which matches the derived solution at the limit point with the exact result, is adopted to improve the accuracy especially for large hole (sphere) radius or crack length. Finally three high accuracy expressions for these finite domain problems are formulated, they either fill in the vacancy of missing solutions in the literature, or have better accuracy than several empirical solutions given in handbooks. |
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| Keywords: | Stress concentration factor Stress intensity factor Expressions in finite domain |
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