Abstract
Resonance of a finite elastic-plastic bar excited by longitudinal stress impulses of amplitudes smaller than the yield stress is studied. The shape of the impulses is rectangular and the stress-strain curve is assumed to be bilinear. Solution of the problem is based on the classical assumptions of elastic-plastic wave propagation and is being handled by means of the position-time diagram. Frequency changes of the excitation forces are accepted to obtain simple equations governing the build up of maximum stress, strain and particle velocity within the sample.
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