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Download PDFOpen PDF in browserModel Order Reduction – Also with Many Inputs and Outputs?EasyChair Preprint 13282, version 22 pages•Date: May 17, 2024AbstractThe Finite Element Method is a widely used discretization method for mechanical systems. To ensure accurate simulations on the one hand and to ensure an acceptable simulation time on the other hand, Model Order Reduction is often applied to reduce the mathematical complexity of the system. One possible projection based Model Order Reduction method for linear systems is moment matching based on Krylov subspaces. In this method, the size of the reduced order model is directly proportional to the number of inputs and outputs of the system. Therefore, tangential directions can be applied to reduce the number of inputs used for Model Order Reduction. In this contribution, we examine the suitability of the Singular Value Decomposition Model Order Reduction (SVDMOR) method for mechanical systems. SVDMOR is commonly used for electrical circuit simulation and reduces the number of inputs and outputs based on a singular value decomposition of the transfer function. The behavior of the singular values, which correspond to the error between the full order model and the model with a reduced number of inputs and outputs, as well as the tangential directions are investigated in the frequency domain on a numerical example. Keyphrases: Many Inputs and Outputs, Model Order Reduction, Multibody dynamics Download PDFOpen PDF in browser |
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