Journal of Theoretical
and Applied Mechanics

56, 3, pp. 873-886, Warsaw 2018
DOI: 10.15632/jtam-pl.56.3.873

The influence of non-axisymmetric pulse shaper position on SHPB experimental data

Robert Panowicz, Jacek Janiszewski, Krzysztof Kochanowski
The results of experimental and numerical analysis of the influence of the non-axisymmetric
pulse shaper position on recorded wave signals in the split Hopkinson pressure bar experi-
ment are presented. The paper focuses attention on the problem of wave signal disturbances
caused by a bending wave resulting from non-axisymmetric pulse shaper positions and,
moreover, different shaper thickness, striker impact velocities and Wheatstone bridge confi-
gurations. The obtained results of analyses indicate that the effect of the non-axisymmetric
pulse shaper position may be neglected if deviation from the bar axis does not exceed 20%.
Keywords: split Hopkinson pressure bar, pulse shaping technology, high-strain-rate testing

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