| 冲击载荷作用下岩石材料模型实验验证 |
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| 引用本文： | 高富强,杨军,张华.冲击载荷作用下岩石材料模型实验验证[J].爆破,2009,26(2). |
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| 作者姓名： | 高富强 杨军 张华 |
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| 作者单位： | 北京理工大学爆炸科学与技术国家重点实验室,北京,100081;北京理工大学爆炸科学与技术国家重点实验室,北京,100081;昆明理工大学国土资源工程学院,昆明,650095 |
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| 摘 要： | 利用ANSYS/LS-DYNA有限元程序建立计算模型,模拟了岩石靶板在冲击载荷作用下的动态响应过程,给出了岩石靶板在不同冲击速度下其内部不同Lagrangian位置处的应力-时间响应曲线,数值模拟结果与实验结果吻合较好.通过对模拟结果和实验结果的对比分析可知,冲击载荷作用下纵向冲击压缩波和横向稀疏卸载波的双重作用是导致岩石靶板破坏的主要原因,这对进一步开展岩石材料动态力学性能研究提供了重要的指导.
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| 关 键 词： | 冲击载荷 岩石材料 动态破坏 数值验证 |
Numerical Validation of Rock Mechanical Properties under Impact Loading |
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| GAO Fu-qiang,YANG Jun,ZHANG Hua.Numerical Validation of Rock Mechanical Properties under Impact Loading[J].Blasting,2009,26(2). |
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| Authors: | GAO Fu-qiang YANG Jun ZHANG Hua |
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| Affiliation: | 1.State Key Laboratory of Explosion Science and Technology;Beijing Institute ofTechnology;Beijing 10081;China;2.Faculty of Land Source Engineering;Kunming University of Science and Technology;Kunming 650095;China |
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| Abstract: | Dynamic mechanical response of rock targets under impact loading are simulated by ANSYS/LS-DYNA finite element method,stress-time curves are obtained at different lagrangian coordinates of rock targets in different impact velocities,and the simulation results is in excellent agreement with the experimental results.Through the comparative analysis of the simulation results and experimental results,we know that the main reason of the rock target failure is the double action of longitudinal compressed waves an... |
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| Keywords: | impact loading rock material dynamic failure numerical validation |
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