Accession Number : ADA018449

Title :   Asymptotic Elastic-Plastic Transition Stress of Shocked Crystalline Materials,

Corporate Author : BALLISTIC RESEARCH LABS ABERDEEN PROVING GROUND MD

Personal Author(s) : Moss,Gerald L.

Report Date : OCT 1975

Pagination or Media Count : 14

Abstract : An analysis of elastic-plastic shock yielding is presented. The analysis is based on the commonly accepted condition that the elastic-plastic transition zone is a heavily dislocated boundary. It is hypothesized that, at dislocation pile-ups at slip band intersections, the lattice can be momentarily cracked. It is shown that this condition allows an approximate determination of the asymptotic elastic-plastic transition stress. This transition stress is calculated with a plane-strain analysis of the localized inhomogeneous stress field about the incipient yield zone. (Author)

Descriptors :   *SHOCK WAVES, *PLASTIC DEFORMATION, *CRYSTALS, MECHANICS, ELASTIC PROPERTIES, PLASTIC PROPERTIES, STRESSES, DISLOCATIONS, SHOCK(MECHANICS), TRANSITIONS, CRYSTAL LATTICES, YIELD POINT, TENSILE PROPERTIES, MATERIALS

Subject Categories : Metallurgy and Metallography
      Crystallography
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE