| 固体的断裂分析 |
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| 引用本文： | 吕萍.固体的断裂分析[J].甘肃科学学报,2001,13(1):99-101. |
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| 作者姓名： | 吕萍 |
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| 作者单位： | 深圳南山开发集团有限公司，深圳 518068 |
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| 摘 要： | 用能量泛函变分理论分析了断裂问题，建立了非线性固体任意元素的边界变分定理，即裂纹扩展时，处于动力平衡状态的条件。由此求得动态裂纹扩展时，沿裂纹边界的能量释放量和能量释放率（动态裂纹扩展力）。
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| 关 键 词： | 可动边界变分问题 能量释放率 动态平衡条件 固体 能量泛函变分理论 断裂问题 裂纹扩展 |
| 文章编号： | 1004-0366(2001)01-0099-03 |
ANALYSIS OF FRACTURES FOR NONLINEAR SOLIDS |
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| LU Ping.ANALYSIS OF FRACTURES FOR NONLINEAR SOLIDS[J].Journal of Gansu Sciences,2001,13(1):99-101. |
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| Authors: | LU Ping |
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| Abstract: | Fractures are analysed with the variational problem of energy functional and the boundary variational theorem of an arbitrary element for nonlinear solids is established, i.e.the equilibrium condition on the dynamics for the crack extension. Based on the boundary variational theorem, the energy release quantity and energy release rate(dynamical crack extension force) along the crack boundary are obtained. |
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| Keywords: | the variational problem of variable boundary energy release quantity energy relecae rate |
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