Accession Number : AD0753136

Title :   A Yield Surface Corner Lowers the Buckling Stress of an Elastic/Plastic Compressed Plate.

Descriptive Note : Technical summary rept.,

Corporate Author : WISCONSIN UNIV MADISON MATHEMATICS RESEARCH CENTER

Personal Author(s) : Sewell,M. J.

Report Date : OCT 1972

Pagination or Media Count : 71

Abstract : The bifurcation stress is calculated for a simply supported elastic/plastic plate in uniaxial compression, in the case when the stress is at a vertex of the yield surface which is locally similar to that of Tresca. The effect of coupled hardening between yield surface facets which meet at the vertex is included. It is found that the bifurcation stress may be substantially lower than that associated with the Mises yield surface. The latter is known to give results too high to be reconciled with experiment. Reductions of order 10-30% are shown to be unexceptional, even with the retention of an elastic value for the shear modulus. (Author)

Descriptors :   (*METAL PLATES, BUCKLING), LOADS(FORCES), DISTORTION, SHEAR STRESSES, ELASTIC PROPERTIES, BOUNDARY VALUE PROBLEMS, NUMERICAL ANALYSIS

Subject Categories : Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE