Accession Number : AD0674755

Title :   THE ELASTIC-PLASTIC BOUNDARY IN ONE DIMENSIONAL WAVE PROPAGATION.

Descriptive Note : Technical rept.,

Corporate Author : STANFORD UNIV CALIF DIV OF ENGINEERING MECHANICS

Personal Author(s) : Clifton,R. J. ; Ting,Thomas T. C.

Report Date : FEB 1968

Pagination or Media Count : 10

Abstract : The problem of moving boundaries separating elastic regions from plastic regions in one dimensional plastic wave propagation was considered by several investigators. These boundaries are called unloading waves if the material at a section changes from a plastic state to an elastic state as the wave passes the section. If the material changes from an elastic state to a plastic state, the moving boundary is called a loading wave. It was shown by other authors that the speed of an unloading wave or a loading wave must satisfy certain conditions if the time derivatives of the stress sigma sub t, on both sides of the elastic-plastic boundary are not zero. The purpose of the note is to clarify the situation in which sigma sub t and its higher derivatives are zero on both sides of the elastic-plastic boundary. (Author)

Descriptors :   (*MECHANICAL WAVES, PROPAGATION), STRESSES, ONE DIMENSIONAL FLOW, STRAIN(MECHANICS), LOADS(FORCES), ELASTIC PROPERTIES, PLASTIC PROPERTIES, BOUNDARY VALUE PROBLEMS

Subject Categories : Mechanics
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE