Efficient Linear Solvers for Mortar Finite-Element Method (original) (raw)

This paper presents an evaluation of efficient linear solvers tailored for the mortar finite-element method (FEM) used in analyzing rotating machinery. The research focuses on two types of linear systems derived from the mortar FEM: one employing Lagrange multipliers and another using variable elimination. Several preconditioners are proposed and tested for their effectiveness in solving these systems, particularly in practical motor analyses. The results indicate that the choice of linear solver significantly impacts computational efficiency, providing insights for future applications in engineering simulations.