Journal of Physical Chemistry & Biophysics
Open Access
ISSN: 2161-0398
ISSN: 2161-0398
Abuagila Slama, Mehdi Mazar Atabaki and Radovan Kovacevic
Posters-Accepted Abstracts: J Phys Chem Biophys
It is very important that to study the behavior of distortion produced during the laser welding process for thin plate of the steel. Several mitigation methods, including elastic finite analysis, inherent strain theory were used to predict and control the distortion which produced for thin plates during the laser welding. In this paper, the effect of the inherent strain and stress were studied to reduce the distortion and bucking during the laser welding process. FE model and inherent strain theory and deformation method have studied to make prediction of the distortion. This prediction will be helpful to measure and control the distortion, bucking and warping for the thin structure plate. In addition, residual stresses and the effect of stress relief are studied in this paper with comparing between two different values of laser welding speed. Stress relief heat treatment was applied to reduce the residual stress which obtained from laser welding process. The experiments and numerical were held to measure and control distortion in thin plate structure for galvanized high steel DP 980. XRD machine was used to measure and analysis the both of transverse and longitudinal residual stresses on the work piece for laser welding process and it is one of the most widely process used non-destructive techniques for residual stress measurement. The elastic finite is accomplished based on the inherent strain theory, interface element and deformation method. In this study, the inherent strain theory and deformation method are used. A three dimensional thermal and structure FEM is used to predict the distortion which produced for butt joint of the thin plate. In addition, the computational approach based on the Finite Element Method is used to predict the residual stress.