Step load moving with superseismic velocity on the surface of an elastic-plastic half-space

Stresses in an Elastic-Plastic Half-Space Due to a Superseismic Step Load

“…In Section I-3 the possibility of discontinuous plastic shock fronts has been indicated and their occurrence must be considered. It has been shown in (5] that for finite values of V no plastic shock front can occur and, that there can be no more than one plastic region in each of the intervals p < S ' In Range I solutions which start accordi.4 to Case 1, have the configuration of Fig. 9.…”

“…According to [5], Eq. (111-13) has for a given state of stress one root i, no more no less, in each of the intervals p< < y. and cS p < IT.…”