Propagation of shock waves in dry and wet sandstone: experimental observations, theoretical analysis and meso-scale modeling

摘要：

　　Methods of experimental observations, theoretical analysis and meso-scale modeling were used to study the propagation processes of shock waves in dry and wet sandstone under dynamic impact in this paper.According to the results from the dynamic impact experiments with velocity of 0.2~0.5 km/s, it was found that the velocity of shock wave increases linearly with water content.Additionally, the velocity of the shock wave in the sandstone showed a linearly increased regularity with the increase of the impact velocity, which was proved by theory in this paper.Furthermore, meso-scale simulation models were performed and the simulation results showed that sandstones porosity reduced the shock waves velocity compared to nonporous materials.Pore space filled with water counteracts the effects of porosity, resulted in larger shock wave velocity.

关键词： Dynamic Impact Shock Wave Meso-Scale simulation Sandstone

作者: Chuang LIU Yang WU Xian-feng ZHANG Jia-jie DENG Chen-yang XU Wei XIONG Meng-ting TAN

作者单位: School of Mechanical Engineering, Nanjing University Science& Technology, Nanjing, China NO.208 Research Institute of China Ordnance Industries, Beijing, China

会议类型: 国际会议

会议名称: 2018 International Conference on Defence Technology (2018国际防务技术会议)

会议地点: 北京

会议语种:英文

页码: 760-764

在线出版日期: 2018-10-21（万方平台首次上网日期，不代表论文的发表时间）