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| 冲击载荷作用下岩石动态力学性能的数值分析 | |
| 引用本文： | 夏昌敬,桂乐乐,谭金彪,严红莲,陈立平,薛东杰. 冲击载荷作用下岩石动态力学性能的数值分析[J]. 弹道学报, 2009, 21(3) |
| 作者姓名： | 夏昌敬 桂乐乐 谭金彪 严红莲 陈立平 薛东杰 |
| 作者单位： | 1. 中国矿业大学力学与建筑工程学院,北京,100083;中国矿业大学煤炭资源与安全开采国家重点实验室,北京,100083;北京理工大学,爆炸科学与技术国家重点实验室,北京,100081 2. 中国矿业大学力学与建筑工程学院,北京,100083 |
| 基金项目： | 国家自然科学基金创新群体项目，北京理工大学爆炸科学与技术国家重点实验室开放基金项目，中国矿业大学(北京)煤炭资源与安全开采国家重点实验室开放基金项目 |
| 摘 要： | 为研究不同冲击载荷和不同性质岩石的动态力学性能,通过与实验结果的对比分析,验证了数值仿真冲击载荷下应力波在岩石介质中传播特性的可行性,利用显式非线性动力分析有限元程序LS-DYNA,数值模拟了SHPB冲击岩石试件的过程,得到了不同冲击速度下人造岩石的应力-应变曲线,获得了相同冲击速度下几种不同性质岩石的应力-应变关系,结果表明,人造岩石的动态力学特性与应变率有很大关系,岩石的动态力学特性与岩性密切相关. |
| 关 键 词： | 冲击载荷 岩石 动态力学性能 数值模拟 |
Numerical Analysis of Dynamic Mechanical Properties of Rocks Under Impact Load |
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| XIA Chang-jing,GUI Le-le,TAN Jin-biao,YAN Hong-lian,CHEN Li-ping,XUE Dong-jie. Numerical Analysis of Dynamic Mechanical Properties of Rocks Under Impact Load[J]. Journal of Ballistics, 2009, 21(3) | |
| Authors: | XIA Chang-jing GUI Le-le TAN Jin-biao YAN Hong-lian CHEN Li-ping XUE Dong-jie |
| Affiliation: | XIA Chang-jing1,2,3,GUI Le-le1,TAN Jin-biao1,YAN Hong-lian1,CHEN Li-ping1,XUE Dong-jie1(1.School of Mechanics & Civil Engineering,2.State Key Laboratory of Coal Resources , Safe Mining,China Universityof Mining , Technology,Beijing 100083,China,3.State Key Laboratory of Explosion Science , Technology,Beijing Institute of Technology,Beijing 100081,China) |
| Abstract: | To study dynamic mechanical properties of different kinds of rocks at different impact velocities,the numerical results on stress propagation characteristics under impact load were proved by being compared with experimental results from references.With the explicit non-linear dynamic analysis program(LS-DYNA),the process of the Split Hopkinson Pressure Bar(SHPB) impacting different samples of rock was simulated.Stress-strain curves of artificial rock at different impact velocities and that of four kinds of ... |
| Keywords: | impact load rock dynamic mechanical properties numerical simulation |
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