STEP LOAD MOVING WITH SUPERSEISMIC VELOCITY ON THE SURFACE OF A HALF-SPACE OF GRANULAR MATERIAL
Technical rept. for Jul 1963-Mar 1965
WEIDLINGER ASSOCIATES NEW YORK
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The two dimensional steady-state problem of the effect of a step pressure traveling with superseismic velocity on the surface of a half-space is treated for an elasticplastic material. The plasticity condition selected is suitable for a granular medium where inelastic deformations are due to internal slip subject to coulomb friction. The problem is inherently nonlinear and leads to a system of coupled differential equations which are solved by digital computer. Numerical solutions are tabulated as functions of the significant nondimensional parameters, i.e. of the Mach number, Poissons ratio and of a value alpha defining the internal friction.
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