A THEORETICAL STUDY OF RESPONSE OF SOLIDS TO IMPULSIVE LOADS OF HIGH PRESSURE

Abstract

The response of materials and structures to pressures on the order of one megabar is considered. The problem is decomposed according to the characteristic response time for various failure modes. The short-time effects study analyzes propagation of these high-pressure pulses. General equations are developed for a solid under finite strain, with dissipation mechanism, heat conduction, and elasticity coefficients open to specification. The long-time effects study develops dynamic elastic-plastic deformation theory of solids utilizing dislocation theory. Continuum equations for the elastic-plastic displacements and stresses are derived. The elastic-plastic deformation equations are solved for three particular cases: (1) Propagation of a stress wave in a one-dimensional rod. (2) Deformation of a semi-infinite half space under a suddenly applied strip load. (3) Deformation of an infinitely long thin cylindrical shell under a suddenly applied strip load along a generator.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1961
Accession Number
AD0273534

Entities

People

  • Joseph J. Poczatek
  • L.e. Fugelso

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Crystal Lattices
  • Crystal Structure
  • Differential Equations
  • Diffusion Coefficient
  • Elastic Waves
  • Equations
  • Geometry
  • High Pressure
  • Mechanics
  • Physical Properties
  • Plastic Deformation
  • Stress Strain Relations
  • Stress Waves
  • Stresses
  • Three Dimensional
  • Two Dimensional
  • Yield Strength

Fields of Study

  • Engineering

Readers

  • Combustion Dynamics and Shock Wave Physics.
  • Structural Dynamics.

Technology Areas

  • Space
  • Space - Hall-Effect Thruster