Prediction of numerical distortion after welding with various welding sequences and clampings

Abstract

Welding simulation of a test cover for hydropower plant was made due to very large dimensions of the cover. The main aim was to predict distortion after welding in order to avoid machining the cover. Welding process was simulated with the Sysweld program to keep distortion in desired limits. Various welding sequences and clamping conditions were calculated to reduce the distortion. Calculation of microstructure constituents in virtual complex geometry of joints was also analyzed.

Keywords

• welding simulation
• finite element method
• multipass welding
• distortion prediction