Accession Number : AD0695703

Title :   THE DYNAMIC PLASTIC RESPONSE OF ALUMINUM TO PLANE STRAIN CYLINDRICAL STRESS WAVES,

Corporate Author : WASHINGTON UNIV SEATTLE DEPT OF AERONAUTICS AND ASTRONAUTICS

Personal Author(s) : Fyfe,Ian M. ; Swift,Robert P.

Report Date : JUL 1969

Pagination or Media Count : 85

Abstract : The dynamic plastic behavior of hollow cylinders deformed radially by an exploding wire technique is used to consider the relative merits of possible constitutive equations. The experiments are of two distinct types, a finite-rise pressure pulse form of loading and a higher stress level impact test. An analytic study of these tests using in turn a linear elastic, a perfectly plastic incremental, and an elastic/viscoplastic constitutive model provided the means of comparison. The results for 1100-0 aluminum show that only the elastic/viscoplastic model, in which the plastic strain rate component is based on an activation energy dislocation concept, can satisfy the requirement of both sets of tests. (Author)

Descriptors :   (*ALUMINUM ALLOYS, PLASTIC PROPERTIES), ELASTIC PROPERTIES, STRESSES, STRAIN(MECHANICS), DYNAMICS, MATHEMATICAL MODELS, LOADS(FORCES)

Subject Categories : Metallurgy and Metallography
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE