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Application of Spectral-Based Substructuring Approach to Analyze the Dynamic Interactions of Powertrain Structures
ISSN: 0148-7191, e-ISSN: 2688-3627
Published May 05, 2003 by SAE International in United States
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A spectral-based substructuring approach applying linear frequency response functions (FRF) is proposed for improving the accuracy of simulating the dynamics of coupled systems. The method also applies a least square singular value decomposition (SVD) scheme to overcome the inherent computational deficiency in the basic substructuring formulation. The computational problem is caused by the magnification of measurement errors during any one of the matrix inversion calculations required for this method. The primary objective of applying this approach is to examine the possibility of analyzing higher frequency response that is normally not possible using conventional modeling technique such as the direct finite and boundary element, and lumped parameter techniques. In this study, additional concepts are also evaluated to quantify the limitations and range of applicability of the proposed substructuring approach for simulating the vibration response of complex powertrain structures. To demonstrate the salient features of this methodology, an idealized beam-flange-plate example and a real-life supercharger-engine problem are analyzed.
CitationPan, R., Lim, T., Hollman, K., and Glover, R., "Application of Spectral-Based Substructuring Approach to Analyze the Dynamic Interactions of Powertrain Structures," SAE Technical Paper 2003-01-1731, 2003, https://doi.org/10.4271/2003-01-1731.
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