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10⁴s^-1应变率下SHPB系统实验相关问题探讨

A discussion on the SHPB tests at high strain rates up to 10⁴s^-1

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【Author】 TAO Jun-lin~(1), LI Yu-long~(2), TIAN Chang-jin~(1), CHEN Yu-ze~1,LI Si-zhong~1, PAN Zhi-liang~(2), XIE Ruo-ze~1(1.Institute of Structural Mechanics, China Academy of Engineering Physics, Mianyang 621900, Sichuan, China;2.Department of Aircraft Engineering, Northwestern Polytechnical University, Xi’an 710072, Shaanxi, China)

【机构】中国工程物理研究院结构力学研究所；西北工业大学飞机工程系；中国工程物理研究院结构力学研究所四川绵阳621900；陕西西安710072；四川绵阳621900；四川绵阳621900；

【摘要】利用小直径(3.17mm)的SHPB系统初步获得两种较高强度材料(一种特种钢和一种WMo合金)应变率达到104s-1以上的动态压缩应力应变曲线。通过对这次实验过程及结果的观察和分析,对高应变率实验存在的几个问题进行了探讨。更多还原

【Abstract】 The stress-strain curves for a special steel and a WMo alloy have been measured by using the split Hopkinson pressure bar (SHPB) technique where the bar was of 3.17mm in diameter. Through the test process observation and the result analysis, some issues encountered in the tests at high strain rates are discussed.更多还原