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Statistical Analysis of Rigid Body Modes of Engine Mounting System Due to Mount Rates Variability
Technical Paper
2006-01-3466
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
While the engine mount rates need to be optimized to achieve the required frequency alignment and modal decoupling for quality performance, the robustness of the system needs to be studied as well. If a system exhibits acceptable modal characteristics with nominal optimized rates, the sensitivity of the system to variation of the rates from their nominal values affects the robustness of the system. Different factors can cause variation of the rates. Among them are rate changes from part to part arising from manufacturing process. In this paper the effect of mount rates variability on the modal characteristics is discussed. Monte Carlo simulation is used to predict how the rigid body modes and their couplings vary when the rate for each mount changes according to its statistical parameters. Through different examples the statistical variability of the modes to the rates variability is presented.
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Topic
Citation
Moetakef, M. and Bonhard, B., "Statistical Analysis of Rigid Body Modes of Engine Mounting System Due to Mount Rates Variability," SAE Technical Paper 2006-01-3466, 2006, https://doi.org/10.4271/2006-01-3466.Also In
Commercial Vehicle Noise & Vibration and Chassis & Suspension Developments
Number: SP-2050; Published: 2006-10-31
Number: SP-2050; Published: 2006-10-31
References
- Meirovitch L. “Analytical Methods in Vibrations” Macmillan Publishing Co. 1967
- Wamsler M. Rose T. “Advanced Mode Shape Identification Method for Automotive Application via Modal Kinetic Energy Plots Assisted by Numerous Printed Outputs” MSC Americas Users' Conference 1998
- Ford Technical Course “Statistical Engineering” Ford Motor Company