Accuracy of computational welding mechanics methods for estimation of angular distortion and residual stresses

• DOI: 10.1007/s40194-019-00746-9
• Publication Date: 2019-05-25T20:32:01Z
• Authors: J. Zhu; M. Khurshid; Z. Barsoum
• Keywords: Fillet (mechanics); Distortion (music); Butt welding; Fillet weld

This study estimates the angular distortion and residual stresses due to welding using following methodologies: thermo-elastic-plastic, inherent strain (local-global), substructuring on two types of welded joints (T-type fillet weld butt weld). The numerical results are compared with experimental measurements these methodologies evaluated in terms accuracy computational time. In addition, influence sequence transverse has been studied numerically by implementing thermo-elastic-plastic (local-global) methods T-type weld. For weld, estimated from is much same good agreement measurements. calculated method largely underestimated. order gain a better understanding where underestimation comes from, discusses block length speed distortion. It found that for long or slow speed, activating plastic gradually dividing bead into an appropriate number blocks can reduce level