固体材料在高应变率条件下的TSHB实验技术*
The TSHB Technique for Material Testing at High Rates of Strain
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摘要: 本文介绍了分离式Hopkinson扭杆技术(TSHB),它克服了压杆技术的主要缺陷.具有测试精确,容易获得较大变形等特点.文中给出了在我们自制试验机上获得的部分工程材料的动态应力应变曲线.Abstract: The material testing technique of Torsional Split Hopkinson Bar(TSHB) is investigated in this paper. It can solve nearly all the problems of Split Hopkinson Pressure Bar(SHPB). Furthermore, accurate experimental results can be obtained in large deformation condition. In this paper some dynamic stress-strain curves of some engineering materials are also given which are obtained from a TSHB apparatus made by ourselves.
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[1] Kolsky,H.,An Investigation of the mechanical properties of materials at very high rates of loading,Proc,phys.soc.,(1949)676-700. [2] Nicholas,T.,J.Lawson.and I,Fiscus.,The AFML Torsional Split Hopkinson Bar,AFML-TR-71-145. [3] 段祝平、孙琦清、杨大光、田兰桥、褚瑶,高应变率下金属动力学性能的实验与理论研究,力学进展,(1982). [4] 赵西环,SHPB技术的进展,太原工学院学报,(1981). [5] 张善元、杨绍瑞,弹性圆柱体中扭转波的几何弥散效应,太原工学院学报,4(1983)2-14 [6] 杨桂通,塑性动力学概论,应用数学和力学讲座讲义,(1983). -
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