Finite Element Numerical Simulation Analysis and Sequence Optimization of Large Vibrating Screen Beam Welding
The screen beam is a key component that affects the service life of large vibrating screen.The numerical simulation method to predict the welding deformation and residual stress distribution after welding can effectively shorten the experiment period and reduce the experiment cost.Three welding schemes are designed according to different welding sequences.The finite element software Simufact Welding is used to carry out numerical simulation respectively to obtain the welding deformation distribution and determine the optimal welding scheme.By analyzing the distribution of temperature field and stress field,it is found that the temperature change and residual stress at the welding seam are the largest,and the equivalent stress shows a decreasing trend with the increase of distance.The residual stress at the inner rounded corner of the flange is larger,and the stress at the outer right angle is the least,but the welding deformation is larger.By studying the distribution of welding deformation and residual stress,it can provide reference for improving welding process of screen beam and designing welding deformation correction device.
万方数据
维普
