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Dynamic Analysis of an Automatic Transmission
Technical Paper
2007-26-054
ISSN: 0148-7191, e-ISSN: 2688-3627
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Sector:
Event:
SIAT 2007
Language:
English
Abstract
Modern vehicles are designed for quiet interior with lower engine and exhaust noise levels. Under such circumstances, gear whine and rattle become one of the significant contributors towards in-cab noise, besides wind and road noise. Present paper deals with dynamic analysis, simulation and validation of the transmission system model for observed gear whine inside the cabin of a passenger car during its running condition. The exercise included development of an accurate numerical model to enable prediction of noise transmission from automatic gearbox to cabin structure. Experimental Modal Testing (EMT) of automatic transmission and suspension components, Multibody simulation of automatic transmission and Finite Element Analysis (FEA) of components and subassemblies followed by component and system level response correlations were carried out. Detailed methodology adopted for the exercise is discussed in the paper.
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Authors
- Prashant Mahale - Automotive Research Association of India, Pune, India
- M. A. Patwardhan - Automotive Research Association of India, Pune, India
- J. Megavannan - Automotive Research Association of India, Pune, India
- S. Raju - Automotive Research Association of India, Pune, India
- B. Murali - Neilsoft Limited, Pune, India
Citation
Mahale, P., Patwardhan, M., Megavannan, J., Raju, S. et al., "Dynamic Analysis of an Automatic Transmission," SAE Technical Paper 2007-26-054, 2007, https://doi.org/10.4271/2007-26-054.Also In
References
- Steyer, G. C. Lim T.C. “System Dynamics in Quiet Gear Design” Proceedings of the 9th Int. Modal Analysis Conf. 999 1005 1991
- Campbell, B. et al. “Gear Noise Reduction of an Automatic Transmission through Finite Element Dynamic Simulation” SAE Noise and Vibration Conference 1997
- Steyer, G. et al. “Gear Noise Reduction through Transmission Error Control and Gear Blank Dynamic Tuning” SAE Paper No. 1999-01-1766
- Krishnaswami, R. et al. “Gear Whine Reduction for a New automatic Transmission” SAE Paper No. 2001-01-1506
- Vandenplas, B. et al. “Predictive Analysis for Engine/Driveline Torsional Vibration Vehicle Conditions using Large Scale Multibody Model” SAE Paper No. 2003-01-1726