Prediction of welding deformation in LNG storage tanks by shrinkage method
Visual-Assembly software was used to simulate the welded joints of typical welds in LNG storage tanks,and the simulated data was compared with the experimental data to ensure the reliability of the simulated data.The grid of simplified joint welds and heat-affected zone was copied into the LNG tank model to predict the welding deformation of the tank.The results showed that the simulation results of small size steel plates with three typical welded joints were close to the experimental results,which proved the feasibility of the simulation results.The simulation results of the inner tank of LNG storage tank showed that the welding deformation of 4,8 and 11 people was basically the same,but the welding efficiency of 11 people at the same time was the highest.The welding deformation under the two welding sequences was basically the same.TIP-TIG(TT)for horizontal welding and TT(TT+TT)for vertical welding resulted in less welding deformation than TT(TT+TT)for vertical welding and(TT+SAW)for horizontal welding,and their deformation modes were different.
万方数据
维普
