A efficient method for the calculation of the forced response of mistuned bladed disks is introduced. Based on the Component Mode Synthesis techniques the structure is divided into substructures, namely the disk and the blades. The Component Mode Synthesis of the disk is calculated with a fast and accurate cyclic symmetry approach. A recently developed method called Wave Based Substructuring is used to describe the (numerous) coupling degrees of freedom between the disk and the blades. The orthogonal waves are derived with a Singular Value Decomposition or a QR decomposition from the coupling nodes’ normal modes calculated by a modal analysis of the full structure.
- Design Engineering Division and Computers in Engineering Division
A Substructure Based Reduced Order Model for Mistuned Bladed Disks
Hohl, A, Siewert, C, Panning, L, & Wallaschek, J. "A Substructure Based Reduced Order Model for Mistuned Bladed Disks." Proceedings of the ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 1: 22nd Biennial Conference on Mechanical Vibration and Noise, Parts A and B. San Diego, California, USA. August 30–September 2, 2009. pp. 899-906. ASME. https://doi.org/10.1115/DETC2009-87459
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