| 拉伸载荷作用下无限大板中三角孔-裂纹问题 |
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| 引用本文： | 刘宝良,闫相桥.拉伸载荷作用下无限大板中三角孔-裂纹问题[J].哈尔滨工业大学学报,2011,43(7):51-56. |
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| 作者姓名： | 刘宝良 闫相桥 |
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| 作者单位： | 哈尔滨工业大学航天学院;哈尔滨工业大学航天学院 |
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| 基金项目： | 国家自然科学基金资助项目(10672046) |
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| 摘 要： | 针对Bueckner原理普遍化,提出了一种求解远方载荷作用下无限大板中孔边裂纹问题的数值方法.通过把适于单一裂纹的Bueckner原理扩充到远方载荷作用下无限大板中孔边裂纹问题,将原问题分解为承受远方载荷不含孔边裂纹的均匀问题和在远方不承受载荷但在裂纹面上和孔的表面上承受面力的问题.算例说明本数值方法对分析无限大板中孔...
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| 关 键 词： | 孔 裂纹 应力强度因子 边界元 裂尖单元 位移不连续 |
Triangle hole-crack problem in infinite plate in tension |
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| LIU Bao-liang and YAN Xiang-qiao.Triangle hole-crack problem in infinite plate in tension[J].Journal of Harbin Institute of Technology,2011,43(7):51-56. |
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| Authors: | LIU Bao-liang and YAN Xiang-qiao |
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| Affiliation: | School of Astronautics,Harbin Institute of Technology,150001 Harbin,China;School of Astronautics,Harbin Institute of Technology,150001 Harbin,China |
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| Abstract: | By extending Bueckner’s principle suited for a crack to a hole crack problem in infinite plate in tension,here,the original problem(the hole crack problem in infinite plate in tension) is divided into a homogeneous problem(the one without hole crack) subjected to remote loads and a hole crack problem in an unloaded body with applied tractions on the surfaces of hole and crack. Numerical results illustrate that the approach is very simple and effective for analyzing the hole crack problem in infinite plate in tension and by which a crack emanating from a triangle hole in infinite elastic plate in tension is analyzed in detail.The effect of hole geometry parameters on the stress intensity factors is revealed.It is found that a hole has a shielding and an amplifying effect on the stress intensity factors of crack emanating from the hole,and the shielding and amplifying effects varied with hole geometry parameters. |
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| Keywords: | hole crack stress intensity factor boundary element crack-tip element displacement discontinuity |
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