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Fe calculations of stress fields from cracks located at the fusion line of weldments |
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| Authors: | Christian Thaulow Øyvind Ranestad Mons Hauge Zhiliang Zhang Masao Toyoda Fumiyoshi Minami |
| Affiliation: | Norwegian University of Science and Technology, N-7034, Trondheim, Norway SINTEF Materials Technology, N-7034, Trondheim, Norway Osaka University, 2-1, Yamada-Oka, Suita, Osaka 565, Japan |
| Abstract: | This paper investigates the stress fields for a crack located at the fusion line of a weldment. The strength mis-matching and the size of the HAZ were varied, and the corresponding distribution of the maximum principal stress was examined. The weld metal strength was globally overmatched with respect to the base material, but locally over- and undermatched with respect to the heat affected zone. Three cases of mis-match were compared, and it was found that reducing the strength of the HAZ lowered the maximum principal stresses. |
| Keywords: | weldments heat affected zone strength mis-match finite element analysis crack tip opening displacement |
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