Effects of Block Height and Punch Width on Deformation of Elastic-Viscoplastic Block

Abstract

Formerly, an experiment concerning deformation of an elastic-viscoplastic block compressed oppositely by elastic flat punches was performed for various punch widths. In the test, the effect of punch width became more remarkable with lapse of time in the transient period from the instant of loading to the equilibrium state, while it was not remarkable at the instant of loading. Moreover, the deformation of the block increased with an increase of the punch width, and it was concluded that the effect was due to the time dependence in plastic deformation. In the present paper, to investigate the effect of the block height on the trend obtained in the previous paper, the same experiments are continued for various heights of block. In these experiments, the effects increase considerably with an increase of the block height.