Numerical Study on the Effectiveness of Fixture and Pre-Strain for Reduction of Welding Distortion
An in-house developed FE code, based on the idea of Iterative Substructure Method, was used to evaluate the effectiveness of fixture and pre-strain for reduction of welding distortion in a fillet welded structure. Comparison between the simulation results and experimental results has been performed to validate the basic FE model. Effects of two fixture conditions and various prestrain schemes were analyzed. The simulation results show that appropriate fixture can greatly reduce angular distortion of the work-piece and results in an appreciable reduction in residual deformation and the application of pre-strain can significantly reduce the residual distortion.
Changhee Lee, Jong-Bong Lee, Dong-Hwan Park and Suck-Joo Na
L. J. Zhang et al., "Numerical Study on the Effectiveness of Fixture and Pre-Strain for Reduction of Welding Distortion", Materials Science Forum, Vols. 580-582, pp. 401-404, 2008