Experimental study on dynamic mechanical property of coal under different impact velocities

摘要：

　　The impact compression test of coal under different strain rate was carried out by Split-Hopkinson Pressure Bar of 75 mm in diameter.The dynamic compressive strength and elastic modulus of the coal, and the relationship between them and strain rate has been studied.The experimental result show that, the whole deformation process of coal includes four stages basically: compaction stage, elastic deformation stage, plastic stage and destruction stage;Coal has good linear elastic deformation characteristics before peak stress;The dynamic compressive strength and peak strain of coal depend on strain rate obviously, which both increased with the strain rate exponentially.

关键词： coal split-Hopkinson pressure bar strain rate dynamic mechanical property

作者: ZHANG Wen-qing SHI Bi-ming XU Wei-bin

作者单位: School of Energy and Safety, Anhui University of Science and Technology, Huainan 232001, China;Key L Huainan Mining Industry Group, Huainan 232001, China

会议类型: 国际会议

会议名称: International Mining Conference 2014(2014国际采矿论坛)

会议地点: 安徽淮南

会议语种:英文

页码: 335-338

在线出版日期: 2014-09-19（万方平台首次上网日期，不代表论文的发表时间）