caa a22 4500 465740405 CHVBK 20180323111807.0 cr unu---uuuuu 170327e19900801xx s 000 0 eng 10.1007/BF00035516 doi (NATIONALLICENCE)springer-10.1007/BF00035516 Sumi Y. Department of Naval Architecture and Ocean Engineering, Yokohama National University, Tokiwadai Hodogaya-ku, 240, Yokohama, Japan aut Computational crack path prediction for brittle fracture in welding residual stress fields [Elektronische Daten] [Y. Sumi] Unstably curved crack paths are often observed for brittle cracks in weldments, because the welding process induces local residual stresses and material inhomogeneities along the welding line. Crack path stabilities are first examined in the present paper. Then, having developed a method of computational crack path prediction, fracture behavior is numerically simulated for brittle cracks propagating in the welding residual stress fields. In the case of an edge crack in a welded square plate which is loaded in the direction perpendicular to the initial crack and parallel to the welding line, the crack sometimes sharply changes direction parallel to the welding line. Although initial increase of the stress intensity factor is obtained along this type of curved trajectory, it is followed by an immediate sharp drop of the stress intensity factor, which may lead to crack arrest. The present computational results are compared with experiments, which show very good agreement with regard to the crack paths and crack arrest behavior. Kluwer Academic Publishers, 1990 International Journal of Fracture Kluwer Academic Publishers 44/3(1990-08-01), 189-207 0376-9429 44:3<189 1990 44 10704 https://doi.org/10.1007/BF00035516 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00035516 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Sumi Y. Department of Naval Architecture and Ocean Engineering, Yokohama National University, Tokiwadai Hodogaya-ku, 240, Yokohama, Japan aut NATIONALLICENCE 773 0- International Journal of Fracture Kluwer Academic Publishers 44/3(1990-08-01), 189-207 0376-9429 44:3<189 1990 44 10704 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer