中南大学学报（自然科学版）2018，Vol.49Issue(5)：1237-1243,7.DOI:10.11817/j.issn.1672-7207.2018.05.027
节理倾角对类岩石冲击能量传递影响的试验研究
Experimental study of jointed angles impact on energy transfer characteristics of simulated rock material
摘要
Abstract
Impact experiments at similar velocity were carried out on different angle jointed rock specimens which were simulated with mortar by split Hopkinson pressure bar(SHPB) device. The influential effects of jointed angles on wave propagation, energy transmission and dissipation were studied when the stress waves went through the jointed plane. An empirical model for energy dissipation ratio to the jointed angles was formulated. The results show that under the condition of similar incident energy, when the jointed angle increases, the reflection energy ratio increases at first, and then decreases, and the transmission energy ratio decreases at first, and then increases. In addition, when the jointed angle is equal to the damage angle, both of reflection energy ratio and transmission energy ratio reach the extreme value. Energy dissipation ratio fluctuates along with the change of jointed angle, reaching two maximum points respectively at the angles of 30° and 90°.关键词
节理倾角/节理岩石/SHPB/应力波/能量耗散Key words
jointed angle/jointed rock/split Hopkinson pressure bar(SHPB)/stress wave/energy dissipation分类
数理科学引用本文复制引用
王建国,梁书锋,高全臣,李祥龙,王立娜,赵炎..节理倾角对类岩石冲击能量传递影响的试验研究[J].中南大学学报（自然科学版）,2018,49(5):1237-1243,7.基金项目
云南省自然科学基金资助项目(2016FD029) （2016FD029）
云南省教育厅科研基金资助项目(2016ZZX108) （2016ZZX108）
国家自然科学基金资助项目(51564027)(Project(2016FD029)supported by the Natural Science Foundation of Yunnan Province （51564027）
Project(2016ZZX108)supported by Scientific Fund of Education Department of Yunnan Province （2016ZZX108）
Projects(51564027)supported by the National Natural Science Foundation of China) （51564027）
