| 含不等长双裂纹无限大板应力强度因子 |
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| 引用本文： | 严国林,黄维扬.含不等长双裂纹无限大板应力强度因子[J].航空学报,1994,15(3):353-358. |
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| 作者姓名： | 严国林 黄维扬 |
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| 作者单位： | 南京航空航天大学 |
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| 摘 要： | 采用交替法求解了含任意相对位置不等长双裂纹的无限大极受均布拉应力作用的应力强度因子。此法以平面弹性力学的一个问题为基础,即含单裂纹无限大板,裂纹面受集中载荷,此问题的解已知,然后交替地满足边界条件。各种计算结果已绘成曲线。
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| 关 键 词： | 应力强度因子 无限大板 交替方向隐式法 |
STRESS INTENSITY FACTORS FOR AN INFINITE PLATE WITH TWO RANDOMLY POSITIONED CRACKS |
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| YanGuolin, NuangWeiyang.STRESS INTENSITY FACTORS FOR AN INFINITE PLATE WITH TWO RANDOMLY POSITIONED CRACKS[J].Acta Aeronautica et Astronautica Sinica,1994,15(3):353-358. |
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| Authors: | YanGuolin NuangWeiyang |
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| Institution: | Faculty 104,Nanjing University of Aeronautics and Astronautics,Nanjing,210016 |
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| Abstract: | The stress intensity factors are obtained for an infinite plate with two randomly posi- tioned cracks under uniformly distributed force at the far edge by the use ofan alternating meth- od.The method is based on a problem ofthe plane elastic theory.The problem is an infinite plate with a central crack whose faces are loaded with two pairs of concentrated forces.The solutions for these SIFs are obtained by integration. The boundary conditions are satisfied aIternatively. The integrals are evaluated by using Gauss rule with 32 nodes,and five iterations are used gener- ally. For some cases the numerical results are shown in curves. |
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| Keywords: | stress intensity factors infinity plates alternatingdireetion implicit methods |
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