Experimental and Computer-Simulation Study of High-Velocity Impact Deformation in Preheated Materials,

Abstract

We have developed a new 'reverse gun' technique for studying high-strain-rate deformations in preheated materials. In this procedure, a rigid plate is fired at a stationary heated cylindrical rod; in contrast, the standard rifle procedure fires an unheated rod into a stationary plate. The advantage of our reverse gun method is that the rod can be preheated and the temperature monitored. We validated our technique by comparing both methods in experiments conducted at room temperature, and we obtained new deformation data for aluminum and copper rods heated to 725 K. We observed good agreement between the measured shape of the recovered rods and the shapes generated by hydrodynamic code calculations using a modified Steinberg-Guinan constitutive model and a Gruneisen equation of state. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Dec 12, 1978
Accession Number
ADA067783

Entities

People

  • Duncan A. Young
  • J. K. Scudder
  • W. H. Gust

Organizations

  • University of California

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force Facilities
  • Aluminum
  • Computer Simulations
  • Computers
  • Equations
  • Experimental Data
  • Gas Guns
  • Hydrocodes
  • Materials
  • Measurement
  • Mechanical Properties
  • Mechanics
  • Melting Point
  • Plastic Deformation
  • Plastic Flow
  • Simulations
  • Stresses

Fields of Study

  • Physics

Readers

  • Computational Fluid Dynamics (CFD)
  • Fluid Dynamics.
  • Powder metallurgy of Titanium alloys.