| 不同载荷形式下石灰岩冲击特性的比较和讨论 |
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| 引用本文： | 高富强,杨军,张华.不同载荷形式下石灰岩冲击特性的比较和讨论[J].兵工学报,2010(Z1). |
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| 作者姓名： | 高富强 杨军 张华 |
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| 作者单位： | 洛阳理工学院土木工程系;北京理工大学爆炸科学与技术国家重点实验室;昆明理工大学国土资源工程学院; |
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| 基金项目： | 国家自然科学基金资助项目(50674049) |
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| 摘 要： | 利用一级轻气炮对石灰岩和围压作用石灰岩靶板进行冲击压缩试验,测得不同冲击速度下的应力-时间信号曲线。通过Lagrange分析方法对应力-时间曲线进行处理,得到了流场中各力学量沿时-空的分布规律,进而得到了材料的应力-应变试验曲线。在试验研究和Lagrange分析的基础上,分析了石灰岩和围压作用石灰岩的动态冲击特性。结果表明:强冲击载荷作用下,围压载荷的加入提高了石灰岩的刚度和延展性,使得材料的抗冲击能力得以提高。
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| 关 键 词： | 围压载荷 石灰岩 冲击特性 Lagrange分析 |
Comparison and Discussion on Impact Behaviors of Limestone Subjected to Different Loads |
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| GAO Fu-qiang,YANG Jun,ZHANG Hua.Comparison and Discussion on Impact Behaviors of Limestone Subjected to Different Loads[J].Acta Armamentarii,2010(Z1). |
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| Authors: | GAO Fu-qiang YANG Jun ZHANG Hua |
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| Affiliation: | GAO Fu-qiang1,YANG Jun2,ZHANG Hua2,3(1.Department of Civil Engineering,Luoyang Institute of Science and Technology,Luoyang 471023,Henan,China,2.State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing 100081,3.Faculty of Land Source Engineering,Kunming University of Science and Technology,Kunming 650095,Yunnan,China) |
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| Abstract: | To study the impact properties of limestone and confining pressure limestone subjected to shock loading,the stress-time curves in different velocities were measured by using one-stage light-gas gun experiment device.The Lagrangian analysis method was used to process the data,and the distributions of the mechanical parameters in time and space in the flow field and the stress-strain curves were obtained.Based on the experiments and analyses,the dynamic impact characteristics of limestone and confining pressu... |
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| Keywords: | confining pressure limestone impact property Lagrangian analysis |
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