Fast finite element stress and deformation prediction for large thick-wall welded cylinder with angle-inserting elbow

摘要

1. The process peak stress increases in case of simplified moving heat source model, and the process stress of the joint with many beads or a very long welding time is affected more significantly by the simplified bead model. 2. Under the model whose bead and moving heat sources are both simplified, the distance between elbow and cylinder as well as the roundness change of the cylinder, are in a reverse state during welding and cooling.