A two-step model reduction approach for mechanical systems with moving loads

We consider model order reduction of mechanical systems with moving loads. Such systems have a time‐varying input matrix that makes the direct application of standard model reduction methods difficult. In this paper, we present a two‐step model reduction approach for systems with moving loads which is based on a low‐rank approximation of the input matrix and applying Krylov subspace methods to the resulting linear time‐invariant system with a modified input. Numerical results demonstrate the properties of the proposed model reduction method.