摘要: A finite-element analysis of a Hopkinson bar test provided additional insight into wave propagation. In the test, a notched tensile spcimen, together with the input and output bars, was subjected to a pressure pulse. In the calcul... 展开 A finite-element analysis of a Hopkinson bar test provided additional insight into wave propagation. In the test, a notched tensile spcimen, together with the input and output bars, was subjected to a pressure pulse. In the calculations, this input pulse was duplicated and various material properties were used to describe the test specimen. The output pulses obtained from the analysis and the experiment were compared; the surface deformations recorded by a high-speed camera in the experiment were also compared to computationally obtained surface deformations. The analysis independently confirms the Bridgman stress distribution across the notch. (ERA citation 05:007499) 收起