From 1990 to 2000, the production ratio of thin steel (10mm or less) to plate structures for certain specific vessels has risen to over 90% by weight. Lightweight structures are being increasingly used in recent years in both U. Both distortion trends and magnitudes for thin structures are influenced by pre-deformation and heat input. Sensitivity studies show that pre-deformation induced by upstream fabrication processes and heat input are important factors influencing predicted distortions. By comparing the predicted distortions with those obtained by measurement, it was found that VFT can accurately predict welding-induced distortions of thin structures. To evaluate the effectiveness of VFT for predicting distortion in thin structures, a bead-on-plate specimen, a butt joint of two large plates, and a long T stiffener were analyzed with VFT welding modeling software. It is more complicated to simulate the welding of thin structures than thick structures because buckling distortion often occurs during the welding of thin structures. and European shipyards have shown strong interests in using the software to predict and control welding distortion of thin-plate ship panels. Virtual fabrication technology (VFT) weld modeling software has been mainly used in thick-structure welding simulation. Paper presented at PVP 2004, ASME Pressure Vessels and Piping Conference 25-29 July 2004, San Diego, CA., USA Abstract National Structural Integrity Research Centre.

Structural Integrity Research Foundation.

Abaqus welding interface cracker