摘要：

Two formal solutions are given to the plane strain problem of the interaction of a stress wave propagated in a bilinear plastic medium with an infinitely rigid-infinitely dense cylinder embedded in the medium. The two solutions are essentially complementary with respect to points of theoretidal difficulty and deficiencies in generality. A numerical study of each solution should lead to further development of a completely general method for treating the problem under consideration or similar probblems. (Author)

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