Investigation of the effects of transverse inertia on SHPB experiments
by C. Huang; Pan Wang; Lianqing Yu; Xi Liu
International Journal of Microstructure and Materials Properties (IJMMP), Vol. 11, No. 3/4, 2016

Abstract: Due to the Poisson's effect, the effects of transverse inertia in specimen tested on Split Hopkinson Pressure Bar device are induced. Transverse inertia has been recognised as an important factor in dynamic responses of brittle materials. Contact friction generated at interfaces of the specimen and two pressure bars, can confine the dilation in the vicinity of the specimen two ends. Four groups of specimens with different ratios of length to diameter are designed to explore the frictional confinement effects on dynamic responses and the effects of specimen length on the accuracy of experiments. The experimental results indicate that short specimen subjecting to the relatively stronger confinement effect of the friction leads to the enhancement of dynamic strength; But the relatively long specimen subjects to the limited confining effect on the dynamic responses. Fracture failure modes of the specimens illustrate the effects of both the contact friction and transverse inertia on dynamic responses of the specimens.

Online publication date: Wed, 14-Sep-2016

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