摘要
利用光通量方法对分离式霍普金森压剪杆实验技术中的剪切应变测量进行了实验研究。实验装置主要包括:准直激光器、光电接收器、光学挡板。由装置性能验证实验结果以及不确定度分析结果表明:利用基于光通量法的剪切应变测量技术能够可靠地测量SHPSB(split Hopkinson pressure bar)试样的剪切应变。并对比了基于光通量法测量的剪切应变值与理论近似结果,结果显示前者小于后者,分析并讨论了原因。
A technique based on luminous flux method was applied to measure shear strain in SHPSB(split Hopkinson pressure bar) experiment.The optical setup consisted of three major components: a collimation laser,a photoelectric sensing apparatus and two optical baffles.Results from a valid experiment and an uncertainty analysis showed that it was effective and accurate to get the shear strain of the specimen.The shear strain measured by the optical apparatus was compared with the theoretic ones.It was found and analyzed that the measured shear strain was less than that of the theory in value.
出处
《爆炸与冲击》
EI
CAS
CSCD
北大核心
2011年第3期232-236,共5页
Explosion and Shock Waves
基金
国家自然科学基金项目(10672177,10872215,10902100)~~
关键词
固体力学
SHPSB
压剪复合加载
光通量法
剪切应变
solid mechanics
SHPSB
combined compression-shear loading
luminous flux method
shear strain
