Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9704648 | International Journal of Impact Engineering | 2005 | 12 Pages |
Abstract
Numerical modeling of experimental results was performed by a two-dimensional Lagrangian procedure using an elastoplastic model with a functional dependence of the dynamic yield point on the state variables of the material. The calculations showed that perturbations develop only in the presence of a technological microgap of several tens of micrometers between the metal layers. Unloading of the material behind the oblique shock front into the gap gives rise to a considerable short-term velocity gradient. Simultaneously, near the interface behind the wave front there is a short-term loss of strength of the material due to thermal softening and the heterogeneous nature of the deformation.
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Authors
O.B. Drennov, A.L. Mikhailov, P.N. Nizovtsev, V.A. Raevskii,