《Investigation on twisting distortion of thin plate stiffened structure under welding》.pdf

Journal of Materials Processing Technology 212 (2012) 1705–1715 Contents lists available at SciVerse ScienceDirect Journal of Materials Processing Technology j o u r n a l h o m e p a g e : w w w. elsev /locate/jmat protec Investigation on twisting distortion of thin plate stiffened structure under welding Jiangchao Wang a,∗ , Masakazu Shibahara b , Xudong Zhang c , Hidekazu Murakawa d a Graduate School of Engineering, Osaka University, 2-1 Yamadaoka Suita, Osaka 565-0871, Japan b Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuencho Nakaku Sakai, Osaka 599-8531, Japan c Hitachi Research Laboratory, 7-1-1 Omikacho Hitachi, Ibaraki 319-1292, Japan d Joining and Welding Research Institute, Osaka University, 11-1 Mihogaoka Ibaraki, Osaka 567-0047, Japan a r t i c l e i n f o a b s t r a c t Article history: The welding distortion of thin plate was selected as research subject, which causes loss of dimensional Received 30 November 2011 control, structural integrity and increases fabrication costs for straightening. To study the characteristic Received in revised form 28 February 2012 of the welding distortion on thin plate structures, experiments were conducted. The test model was a Accepted 13 March 2012 thin plate stiffened structure and a large twisting distortion was observed. The welding distortion of the Available online xxx same structure was analyzed as a large deformation problem using a thermal elastic plastic FEM and an elastic FEM based on the concept of inherent deformat