The present study is focused on viscouslike behavior of solids during largehyphen;amplitude compressive stresshyphen;wave propagation. Maximum strain rate in the plastic wave has been determined for 30 steadyhyphen; or near steadyhyphen;wave profiles obtained with velocity interferometry methods. The materials include six metals, aluminum, beryllium, bismuth, copper, iron, and uranium, and two insulating solids, magnesium oxide and fused silica. A plot of Hugoniot stress versus maximum strain rate for each material is adequately described by eegr;dot;=asgr;mh. The exponentmis approximately 4 for all materials while the coefficientais material dependent. A model is developed which incorporates the observed trends of the shock viscosity data in a threehyphen;dimensional framework. Finitehyphen;difference calculations using the model reproduce the experimental wave profile data.
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