Multi-Pass Welding Distortion Analysis Using Layered Shell Elements Based on Inherent Strain

In this article, a layered shell element-based, elastic finite element method for predicting welding distortion in multi-pass is developed. The generated each pass can be predicted by employing layer-by-layer equivalent plastic strains as thermal expansion coefficients and using the heat-affected zone (HAZ) width mesh size. final expressed sum of distortions pass. This study focuses on extraction strain HAZ through 3D analysis (TEPA) input variables extracted from converted added to simulate welding. A 10 mm thick, butt-welded joint, subjected three passes, simulated via proposed method. compared with TEPA results measured experimental data. outcome indicates that good agreement obtained.