A lean and efficient snapshot generation technique for the Hyper-Reduction of nonlinear structural dynamics

摘要

Model Order Reduction based on subspace projection can lead to impressive speedups, as the number of dofs can be drastically reduced. However, the computation of the nonlinear forces, which is performed in the unreduced physical domain, becomes the dominating bottleneck for nonlinear systems. This issue is addressed by Hyper-Reduction, which is the approximate but inexpensive computation of the nonlinear forces in a reduced basis model.