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Influence of flange dimensions and geometrical imperfections on stress concentrations at welded flange necks
Author(s) -
Seidel Marc,
Wegener Filip,
van Dijk Ingmar
Publication year - 2020
Publication title -
stahlbau
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.268
H-Index - 19
eISSN - 1437-1049
pISSN - 0038-9145
DOI - 10.1002/stab.202000021
Subject(s) - flange , structural engineering , shell (structure) , welding , stress (linguistics) , tower , engineering , stress concentration , bending , materials science , finite element method , mechanical engineering , philosophy , linguistics
Ring flange connections for tubular towers, like those for wind turbines or chimneys, are subjected to significant fatigue loading. Next to the bolts, the weld connecting the flange to the tower shell also needs to be checked against fatigue failure. The flange causes local bending moments in the shell, which increase the meridional stress, i. e. stress concentrations occur. In this paper, the influence of geometrical imperfections on such stress concentrations is quantified and the influence of flange geometry on resulting stress is investigated. Recommendations are given for flange dimensions and the design procedure.