- Conference date: 13-18 Aug 1995
- Location: Seattle, Washington (USA)
Using Johnson’s anelastic release model for metals (3,4), hydrocode simulation of four Ta plate-impact experiments were performed. These calculations agree well with the data as long as the complete non-linear version of the model is used and the yield surface is itself made asymmetric, i.e., different on loading and unloading. From the parameters in the model it is possible to determine the drag coefficient, mobile dislocation density, and characteristic length of a dislocation, and to obtain reasonable values.
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