Propagation of Quasiacoustic Pulses in an Elastoplastic Medium |
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Authors: | N N Myagkov |
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Institution: | (1) Institute of Applied Mechanics, Russian Academy of Sciences, Moscow, 117334 |
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Abstract: | Expressions for the velocity of a plastic shock wave and phase velocity of longitudinal waves in an elastoplastic medium with hardening are obtained in a quasiacoustic approximation. An analytical solution of the problem of shock pulse attenuation is constructed. A special feature of the amplitude of the attenuating plastic shock wave is that it reaches the amplitude of the elastic precursor in a finite time, whereas in hydrodynamics, the amplitude of a quasiacoustic shock pulse tends to zero asymptotically. |
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Keywords: | elastoplastic medium isotropic hardening nonlinear waves shock wave |
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