長い溶接継手の 3 次元残留応力測定理論

概要

論文の詳細を見る
Two of the authors have already proposed the general principles for measurement of residual stresses. In this paper, the authors develop a new measuring theory of three dimensional residual stresses in a long welded joint by using the theory of inherent strains, which is based on one of these principles. First of all, the characteristic of the distribution of its inherent strains induced in a long welded joint is clarified. This characteristic makes the measuring theory simple. According to this resulting theory, three dimensional inherent strains can be divided into the components of inherent strains contained in a sliced thin vertical cross section (T-specimen) to the weld line and longitudinal inherent strains contained in sliced thin plates (L_i-specimens) parallel to the direction of the weld line. Then, the measurement of three dimensional welding residual stresses in a very thick plate has become practically possible. When residual stress distributions are uniform along the weld line, the theory should provide the exact measured ones. By this developed theory, the distributions of residual stresses in an electroslag welded joint are measured for the first time. And the estimated residual stresses show a fairly good coincidence with the directly observed stresses on its surfaces. It can be concluded that the present theory is reliable and practically applicable to measure such complex triaxial residual stresses.
社団法人溶接学会の論文
1980-12-05

長い溶接継手の 3 次元残留応力測定理論

スポンサーリンク

概要

著者

関連論文

スポンサーリンク