Efficient enforced motion analysis of full-scale vehicle structures with global and local structural damping

Abstract

A new approach for the enforced motion analysis of large-scale vehicle structures with the large mass technique is presented. A vehicle finite element model includes global and local structural damping to reduce the vibration level. In order to avoid possible numerical inaccuracy of the large mass approach, the modal frequency problem is partitioned into the low-frequency mode part and the flexible mode frequency mode part, in which the FRRA algorithm is employed for the solution of the flexible mode part. A numerical example shows an outstanding performance compared to traditional industry methods.