Accession Number : AD0770030

Title :   A Finite Element Method for the Determination of Two-Dimensional Residual Stress Fields,

Corporate Author : VIRGINIA POLYTECHNIC INST AND STATE UNIV BLACKSBURG COLL OF ENGINEERING

Personal Author(s) : Candogan,Ali ; Reifsnider,K. L.

Report Date : 27 JUL 1973

Pagination or Media Count : 34

Abstract : A finite element model has been developed to analyze a single-edge-notched specimen subject to cyclic loading in the elastoplastically, unloaded, and the resulting residual stressed calculated by two independent methods. The specimens were then reloaded elastically along the unloading path. In the present analysis, residual stress values which were obtained near the crack tip exceeded the nominal remote loading stress by 50%. Through the use of the finite element method, a numerical boundary value solution method is developed for the residual stress problem. The investigators believe that this is the first such analytical solution of the two-dimensional residual stress problem at a singularity. The general trends of the results obtained in this study are in close agreement with the experimental and theoretical fracture mechanics concepts. (Modified author abstract)

Descriptors :   (*RESIDUAL STRESS, MATHEMATICAL MODELS), (*FRACTURE(MECHANICS), MATHEMATICAL MODELS), CRACK PROPAGATION, FATIGUE(MECHANICS), LOADS(FORCES), STRESS STRAIN RELATIONS, METALS, PLASTIC PROPERTIES

Subject Categories : Metallurgy and Metallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE