This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Gear Whine Noise Investigation of a Bus Rear Axle - Todays Possibilities and Outlook
Technical Paper
2017-01-1820
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
This paper presents a simulation environment and methodology for noise and vibration analyses of a driven rear axle in a bus application, with particular focus on medium to high frequency range (400 Hz to 3 kHz). The workflow demonstrates structure borne noise and sound radiation analyses. The fully flexible Multi-Body Dynamics (MBD) model - serving to cover the actual mechanical excitation mechanisms and the structural domain - includes geometrical contacts of hypoid gear in the central gear and planetary gear integrated at hubs, considering non-linear meshing stiffness. Contribution of aforementioned gear stages, as well as the propeller shaft universal joint at the pinion axle, on overall axle noise levels is investigated by means of sensitivity analysis. Based on the surface velocities computed at the vibrating axle-housing structure the Wave Based Technique (WBT) is employed to solve the airborne noise problem and predict the radiated sound. Actual capabilities and limitations of the applied hypoid gear contact model are identified by comparing simulated and measured housing surface acceleration as well as sound pressure levels. Finally, a superior hypoid gear contact model based on preceding Loaded Tooth Contact Analysis (LTCA) is suggested for future extension of the methodology.
Recommended Content
Authors
Citation
Sopouch, M., Hozmec, J., and Cadario, A., "Gear Whine Noise Investigation of a Bus Rear Axle - Todays Possibilities and Outlook," SAE Technical Paper 2017-01-1820, 2017, https://doi.org/10.4271/2017-01-1820.Data Sets - Support Documents
| Title | Description | Download |
|---|---|---|
| Unnamed Dataset 1 |
Also In
References
- Küçükay , F. Dynamik der Zahnradgetriebe Springer-Verlag 1987
- Sopouch M. , Resch T. , and Herster P. Analysis of Gearbox Acoustics with AVL EXCITE SIA Acoustic Simulation Workshop France 2011
- Resch T. , Vock Ch. , Sopouch M. , and Hozmec J. Gear Rattle Prediction using Coupled Bending and Torsional Approach SAE China 2011
- Hepberger , A. , Priebsch , H. , Diwoky , F. , and Pramberger , H. Application of the Wave Based Technique to Predict the Engine Noise Radiation Under Anechoic Conditions SAE Int. J. Passeng. Cars - Mech. Syst. 2 1 1477 1486 2009 10.4271/2009-01-2211
- N.N. AVL EXCITE™ Power Unit, software package for flexible multi-body dynamics AVL List GmbH
- N.N. AVL EXCITE™ Acoustics, software package for calculation of sound radiation AVL List GmbH
- Offner G. Modelling of Condensed Flexible Bodies Considering Non-linear Inertia Effects resulting from Gross Motions Proc. IMechE, Part K: Journal of Multi-body Dynamics 225 3 204 219 2011
- Offner G. , Eizenberger T. and Priebsch H. H. Separation of Reference Motions and Elastic Deformations in an Elastic Multi-body System Proc. IMechE, Part K: J. Multi-body Dynamics 220 63 75 2006
- Drab C.B. , Engl H.W. , Haslinger J.R. , Offner G. , Pfau R.U. and Zulehner W. Dynamic simulation of crankshaft multibody systems Journal of Multibody System Dynamics 22 2 133 144 2009
- Litvin F.L. Gear Geometry and Applied Theory Cambridge University Press 2004
- N.N. ANSOL, gear contact analysis software Advanced Numerical Solutions LLC
- N.N. KISSsoft, calculation software for machine design KISSsoft AG
- Desmet W. A wave based prediction technique for coupled vibro-acoustic analysis KU-Leuven, division PMA, PhD. thesis 98D12 1998
- Hepberger A. Mathematical methods for the prediction of the interior car noise in the middle frequency range Graz University of Technology PhD. thesis 2002
- Peng T. Coupled Multi-body Dynamic and Vibration Analysis of Hypoid and Bevel Geared Rotor System University of Cincinnati PhD. thesis 2010