2024/07/03 by Tommaso Bevilacqua, Bevilacqua, Tommaso, Axel Klawonn +5
Engineering · Materials Science · #65M60 #65N55 #74F05 #Advanced ceramic materials synthesis #Aluminum Alloys Composites Properties #FOS: Mathematics #Induction Heating and Inverter Technology #Numerical Analysis (math.NA)
paper · pdf · doi:10.48550/arxiv.2407.03230
openalex publication_date 2024/07/03 · openalex created_date 2024/07/06 · openalex updated_date 2026/07/28
Highly resolved finite element simulations of a laser beam welding process are considered. The thermomechanical behavior of this process is modeled with a set of thermoelasticity equations resulting in a nonlinear, nonsymmetric saddle point system. Newton's method is used to solve the nonlinearity and suitable domain decomposition preconditioners are applied to accelerate the convergence of the iterative method used to solve all linearized systems. Since a onelevel Schwarz preconditioner is in general not scalable, a second level has to be added. Therefore, the construction and numerical analysis of a monolithic, twolevel overlapping Schwarz approach with the GDSW (Generalized Dryja-Smith-Widlund) coarse space and an economic variant thereof are presented here.