STEP LOAD MOVING WITH SUPERSEISMIC VELOCITY ON THE SURFACE OF A HALF-SPACE OF GRANULAR MATERIAL

Abstract

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, Poisson's ratio and of a value alpha defining the internal friction.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1965
Accession Number
AD0621363

Entities

People

  • Alva Matthews
  • Hans H. Bleich
  • Joseph P. Wright

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Cartesian Coordinates
  • Computational Science
  • Constitutive Equations
  • Differential Equations
  • Equations
  • Friction
  • Granular Materials
  • Internal Friction
  • Materials
  • New York
  • Numerical Analysis
  • Numerical Integration
  • Partial Differential Equations
  • Shear Stresses
  • Steady State
  • Strain Rate
  • Three Dimensional

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Materials Science and Engineering.
  • Structural Dynamics.

Technology Areas

  • Space
  • Space - Hall-Effect Thruster