Flexible multibody system simulation allows for fast and adequate investigation of the dynamics of mechanical systems. But in case of a system response with large deformations the time response does not uncover the causes, i. e. the resonances of the system. The identification of the systems eigenfrequencies gives more insight in resonance phenomena, but in case of periodic time-variant systems the often used snap-shot-eigenfrequencies do not reveal the real system dynamics, which has to be described by more than only one frequency response function. Based on the formulation of a flexible multibody system and the theory of ordinary linear periodic differential equations, partial frequency response functions, describing the real characteristics of a periodic system, are calculated and compared to the snapshot-frequency response functions.
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ASME 2003 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
September 2–6, 2003
Chicago, Illinois, USA
Conference Sponsors:
- Design Engineering Division and Computers and Information in Engineering Division
ISBN:
0-7918-3703-3
PROCEEDINGS PAPER
Estimation of Partial Frequency Response Functions of a Parametrically Excited Flexible Multibody System
Thorsten Prothmann,
Thorsten Prothmann
University of the Federal Armed Forces-Hamburg, Hamburg, Germany
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Delf Sachau
Delf Sachau
University of the Federal Armed Forces-Hamburg, Hamburg, Germany
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Thorsten Prothmann
University of the Federal Armed Forces-Hamburg, Hamburg, Germany
Delf Sachau
University of the Federal Armed Forces-Hamburg, Hamburg, Germany
Paper No:
DETC2003/VIB-48327, pp. 231-240; 10 pages
Published Online:
June 23, 2008
Citation
Prothmann, T, & Sachau, D. "Estimation of Partial Frequency Response Functions of a Parametrically Excited Flexible Multibody System." Proceedings of the ASME 2003 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 5: 19th Biennial Conference on Mechanical Vibration and Noise, Parts A, B, and C. Chicago, Illinois, USA. September 2–6, 2003. pp. 231-240. ASME. https://doi.org/10.1115/DETC2003/VIB-48327
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