Prediction and Control of Welding Deformations in Stiffened Hull Blocks using Inherent Strain Approach

摘要

The main purposes of the present study are to develop an efficient analysis method that can predict the welding distortion of stiffened hull blocks according to fabrication sequences and also to simulate the correction of welding distortions in stiffened hull blocks by line heating. In this paper, the equivalent loading method based on the inherent strain theory was adopted. By the present approach, the welding distortion of a stiffened panel block was calculated according to the assembly sequences and the heat-correction process was simulated. It is verified through the experiments that the present method is effective and efficient for the simulation to predict and to correct the welding distortions of stiffened hull blocks.