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Abstract
The finite element method in a dynamic formulation was used to characterize the propagation of longitudinal elastic waves in cylindrical plates and Pochhammer waves in rods. It was shown that in compact bodies first only one longitudinal wave propagates until unloading waves from the side surfaces begin to interact, and then two types of longitudinal elastic waves propagate simultaneously. In rods, a longitudinal elastic wave propagates at the initial stage. Over time, the influence of unloading from the side surfaces of the rod leads to the simultaneous propagation of two types of elastic waves: a longitudinal elastic wave and a Pochhammer wave. Using aluminum as an example, the range of geometric parameters was determined for nearly compact bodies, whose elastic properties cannot be evaluated by ultrasonic methods.
Published Version
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