Multi-level finite elements of high-order for the simulation of melt pool sizes and cooling rates in metal additive manufacturing

The presentation addresses the numerical modelling of the benchmark AMB2018-02 where we take upon the challenge of verifying the melt pool geometry (CHAL-AMB2018-02-MP) and the cooling rate (CHAL-AMB2018-02-CR). We employ a variant of the numerical model presented in [1] and extend it to hierarchical B-Splines [2]. The principal idea is to use high-order refinements to resolve the region around the boundary of the weld pool with high accuracy. The numerical effort in parts of the domain remote to the laser impact are coarsened such that a computationally efficient model results.