Abstract
The measurement accuracy of dynamic material testing is required for the development of design and numerical simulation based on the accurate model of stress-strain relation which is applicable to various strain-rate conditions. On the other hand, the Hopkinson bar method (HBM) is the most widely used one for the dynamic compression test, whereas the method is not used very much for the dynamic tension test. The non-coaxial Hopkinson bar method (NCHBM) is one of the recently proposed dynamic tension tests and is based on HBM. In this study, the accuracy of the stress-strain relation obtained on the basis of NCHBM is examined by using the FEM code LS-DYNA. The effects of the rising time of applied velocity, the size and geometry of specimen, the boundary condition, and so forth are also examined.
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