| 冲击载荷作用下岩石损伤的能量耗散 |
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| 引用本文： | 高文学,刘运通.冲击载荷作用下岩石损伤的能量耗散[J].岩石力学与工程学报,2003,22(11):1777-1780. |
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| 作者姓名： | 高文学 刘运通 |
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| 作者单位： | 北京工业大学建工学院,北京,100022 |
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| 摘 要： | 利用一级轻气炮进行平面撞击实验，测量砂岩试件组成的靶板中的应力-时间历程曲线；基于RaIlkinc-Hugoniot守恒方程，计算得到不同冲击荷载下岩石试件中的损伤能量耗散密度，为建立新的岩石动态损伤模型创造了条件。
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| 关 键 词： | 冲击载荷 岩石损伤 脆性岩石 动态损伤 能量耗散 |
| 文章编号： | 1000-6915(2003)11-1777-04 |
| 收稿时间： | 2003-3-31 |
| 修稿时间： | 2003年3月31日 |
ENERGY DISSIPATION OF ROCK DAMAGE UNDER IMPACT LOADING |
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| Gao Wenxue,Liu Yuntong.ENERGY DISSIPATION OF ROCK DAMAGE UNDER IMPACT LOADING[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(11):1777-1780. |
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| Authors: | Gao Wenxue Liu Yuntong |
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| Abstract: | Dynamic damage of brittle rocks is an evolution process of inconvertible energy dissipation. The damage dissipation energy can be calculated through the area between Rayleigh line and Hugoniot shock adiabatic curve. The shock-induced damage experiments are carried out by means of a gas gun. The stress wave curves are measured using the planar impact techniques. Based on the experiment results and the Rankine-Hugoniot conservation equations,the damage energy dissipation of brittle rock under impact loading is calculated. The rock damage evolution rules are fairly delineated,which contribute to establish the new rock damage model. |
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| Keywords: | rock mechanics impact load brittle rock dynamic damage energy dissipation |
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