Quantitative evaluation of SPH in TIG spot welding

Abstract While the application of Smoothed Particle Hydrodynamics (SPH) method for modeling welding processes has become increasingly popular in recent years, little is yet known about quantitative predictive capability this method. We propose a novel SPH model simulation tungsten inert gas (TIG) spot process and conduct thorough comparison between our implementation two finite element (FEM)-based models. In order to be able quantitatively compare results with grid-based methods, we additionally an improved particle grid interpolation based on linear least-squares optional hole-filling pass which accounts missing particles. show that yield excellent results, especially given observed deviations investigated FEM methods as such, validate accuracy industrially relevant engineering application.