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

JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS

卷:297

Article

Stykel, Tatjana¹  Vasilyev, Alexander¹ 

[1] Univ Augsburg, Inst Math, Univ Str 14, D-86159 Augsburg, Germany

关键词: Mechanical systems;    Moving loads;    Model reduction;    Least-squares approximation;   

DOI  :  10.1016/j.cam.2015.11.014

来源: Elsevier

【 摘 要 】

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. (C) 2015 Elsevier B.V. All rights reserved.

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