Geometrically exact multi-layer beams with a rigid interconnection

Abstract. In this work, a finite-element formulation for geometrically exact multi-layer beams without considering the interlayer slip and uplift is proposed. Numerical examples indicate that, in comparison with the existing geometrically non-linear sandwich beam models, the 2D plane-stress elements and the analytical results from the theory of elasticity, the multi-layer beam model is very efficient for modelling thick beams where warping of cross-sections has to be considered

Development of a parallel third order explicit multirate scheme

Multirate schemes aims at circumventing the global stability restriction of classical explicit methods. The idea is to gather mesh elements in groups that satisfy local stability conditions. The transition between groups has to be accommodated to preserve convergence and conservation properties. The extension of these strategies to the parallel framework is challenging since the computational load varies at each stage of the algorithm. Here we focus on the parallel implementation of a third order multirate strategy for discontinuous Galerkin simulations