Comparison of two model order reduction methods for elastic multibody systems with moving loads. (March 2017)

• Record Type: Journal Article
• Authors: Baumann, Michael; Vasilyev, Alexander; Stykel, Tatjana; Eberhard, Peter
• Is Part Of: Proceedings of the Institution of Mechanical Engineers. Volume 231:Number 1(2017:Mar.)
• Page Start: 48
• Page End: 56
• Publication Date: 2017-03
• Subjects: Elastic multibody systems -- moving load -- parametric model order reduction -- time-varying model order reduction; Machinery, Dynamics of -- Periodicals; Machine design -- Periodicals; 621.815
• DOI: 10.1177/1464419316645047
• Languages: English
• ISSNs: 1464-4193

Abstract

In this paper, two different model order reduction approaches for elastic multibody systems with moving loads are considered. The first approach is based on a parametric formulation of the input and output matrices and application of parametric model order reduction. Therefore, a quasi-static description without considering the time dependency of the parameter is proposed. In the second approach, the time-varying input matrix is approximated in a low-dimensional subspace and model order reduction of a time-invariant system is performed. To investigate the applicability of these methods for the generation of reduced elastic multibody systems, for the first time, both approaches are compared for a thin-walled cylinder model with a rotating force.