| 一种新的断裂计算方法 |
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| 引用本文： | 佘成学.一种新的断裂计算方法[J].岩土力学,2000,21(2):130-133. |
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| 作者姓名： | 佘成学 |
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| 作者单位： | 武汉水利电力大学 水电系 , 湖北 武汉 430072 |
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| 摘 要： | 利用单元中嵌合无厚度不连续面的方法 ,模拟断裂面的形成过程。用虚功原理建立包含断裂面影响的有限元平衡方程 ；利用余虚功原理推导了断裂面的矩阵的具体形式 ； 以第一类断裂问题 -开裂问题为例 ，建立了开裂面粘塑性开裂本构关系，进一步得到了以弹粘塑性形式表示的有限元计算格式。 通过简单算例证明了该方法的正确性。
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| 关 键 词： | 断裂 有限元 粘塑性 |
| 收稿时间： | 1999-06-29 |
| 修稿时间： | 1999-06-29 |
A new method for calculation of fracture propagation |
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| She Chengxue.A new method for calculation of fracture propagation[J].Rock and Soil Mechanics,2000,21(2):130-133. |
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| Authors: | She Chengxue |
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| Institution: | Wuhan University of Hydraulic and Electric Engineering , 430072, China |
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| Abstract: | The embedded softening surface is used to simulate the propagation of fracture in rocks. Based upon the virtual work principle, the equilibrium equations of FEM considering the effect of fracture on deformation are established. And on the basis of the complement virtual work principle, the concrete matrix for the effect of fracture is deduced. As an example, the first type of fracture cracking problem is analyzed to develop the visco plastic constitutive relationship on crack surfaces, the visco plastic FEM calculation procedure is then obtained. Finally, an example is simply calculated to demonstrate the rationality of the proposed method. |
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| Keywords: | fracture FEM visco-plasticity |
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