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Electric pulse current effect on stress-strain state in the notch vicinity in a cantilever beam under cyclic bending

Research paper by G. V. Stepanov, A. I. Babutskii

Indexed on: 23 Apr '10Published on: 23 Apr '10Published in: Strength of Materials



Abstract

Calculation results of the thermal effect assessment induced by electric pulse current on stress variation in the edge notch vicinity in a metal cantilever beam under cyclic bending are presented. The results obtained indicate that thermal action of electric pulse current diminishes the level of the maximal tensile stresses in the notch vicinity, while the cyclic stress range remains constant during further loading. The preliminary uniform heating enhances the electric pulse current action. Under plain stress state loading conditions, the electric pulse current effect is much less pronounced, as compared to plain strain state loading conditions.