| Catastrophe model and its experimental verification of static loading rock system under impact load |
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| 作者姓名： | 左宇军 李夕兵 王卫华 张义平 马春德 闫长斌 |
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| 作者单位： | [1]School of Resources ＆ Safety Engineering, Central South University, Changsha 410083, China [2]Research Center for Numerical Tests on Material Failure, Dalian University, Dalian 116622, China [3]School of Resources ＆ Civil Engineering, Northeastern University, Shenyang 110004, China |
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| 基金项目： | 国家高技术研究发展计划(863计划);中国博士后科学基金 |
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| 摘 要： | According to the catastrophe model for impact buckling of static loading structures, a new catastrophe model for impact loading failure of a static loading rock system was established, and one dimension （1D） catastrophe model was analyzed. The analysis results indicate that the furcation collection where catastrophe may take place is not only decided by mechanical system itself but also relates to exterior loading, which is different from the results obtained under mono-static loading where the bifurcation collection is only determined by mechanics of the system itself and has nothing to do with exterior loading. In addition, the corresponding 1D coupled static-dynamic loading experiment is designed to verify the analysis results of catastrophe model. The test is done with Instron 1342 electroservo controlled testing system, in which medium strain rate is caused by monotony rising dynamic load. The parameters are obtained combining theoretical model with experiment. The experimental and theoretical curves of critical dynamic load vs static load are rather coincided, thus the new model is proved to be correct.
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| 关 键 词： | 岩石试验 静载荷 冲击负载 稳定性 突变模型 |
| 文章编号： | 1005-9784（2006）03-0281-05 |
| 收稿时间： | 2005-12-12 |
| 修稿时间： | 2006-01-18 |
Catastrophe model and its experimental verification of static loading rock system under impact load |
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| Zuo Yu-jun , Li Xi-bing , Wang Wei-hua , Zhang Yi-ping , Ma Chun-de and Yan Chang-bin.Catastrophe model and its experimental verification of static loading rock system under impact load[J].Journal of Central South University of Technology,2006,13(3):281-285. |
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| Authors: | Zuo Yu-jun Li Xi-bing Wang Wei-hua Zhang Yi-ping Ma Chun-de and Yan Chang-bin |
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| Affiliation: | (1) School of Resources & Safety Engineering, Central South University, 410083 Changsha, China;(2) Research Center for Numerical Tests on Material Failure, Dalian University, 116622 Dalian, China;(3) School of Resources & Civil Engineering, Northeastern University, 110004 Shenyang, China |
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| Abstract: | According to the catastrophe model for impact buckling of static loading structures, a new catastrophe model for impact loading failure of a static loading rock system was established, and one dimension (1D) catastrophe model was analyzed. The analysis results indicate that the furcation collection where catastrophe may take place is not only decided by mechanical system itself but also relates to exterior loading, which is different from the results obtained under mono-static loading where the bifurcation collection is only determined by mechanics of the system itself and has nothing to do with exterior loading. In addition, the corresponding 1D coupled static-dynamic loading experiment is designed to verify the analysis results of catastrophe model. The test is done with Instron 1342 electro-servo controlled testing system, in which medium strain rate is caused by monotony rising dynamic load. The parameters are obtained combining theoretical model with experiment. The experimental and theoretical curves of critical dynamic load vs static load are rather coincided, thus the new model is proved to be correct. |
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| Keywords: | static loading rock system impact load instability catastrophic model coupled static-dynamic loading |
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