Measuring Methods of Three-Dimensional Residual Stresses with Aid of Distribution Function of Inherent Strains (Report 3) Distributions of Residual Stresses and Inherent Strains in Fillet Welds

摘要

In this paper, three dimensional residual stresses due to single pass and multipass fillet welding are analyzed by thermal elastic-plastic FEM. Then,, inherenet strain distributions produced in fillet welds are described by series function. Based on the results of series function descriptions for inherent strains, a simplified distribution pattern for inherent strains is derived and described by a simple function with a very small number of unknown parameters. If these unknown parameters are to be determined by experiments, the required measurements will be greatly reduced.