This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Effective Powertrain Isolation of Off-Highway Vehicles
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 11, 2019 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
Event: International Conference on Advances in Design, Materials, Manufacturing and Surface Engineering for Mobility
A Powertrain is one of the major sources of excitation of a vehicle vibration and noise in off highway vehicles. It typically has a significant contribution in whole vehicle NVH characteristics. The structure borne energy of the powertrain is transmitted to the chassis and rest of the vehicle through powertrain mounts. Hence, it is of prime importance to design an effective powertrain mounting system in such a way that it will reduce vehicle vibrations to improve vehicle NVH as well as ride comfort, resulting in an effective vibration isolation system and ensuring long service life. In this paper, a newly developed an analytical tool for effective design of isolation system is discussed. For this model, powertrain is considered as a six degree-of-freedom system. Analytical calculations are implemented to find optimum mount design parameters i.e. stiffness, orientation and position of isolators to meet desired NVH targets. To achieve a good isolation characteristic, there is a necessity of decoupling of rigid body modes using optimization of various decoupling methods, which further helps in reducing the forces transmitted by the powertrain through the mounts. To evaluate coupling between the rigid body modes, modal energy distribution calculated from an analytical tool is used. The results from the developed analytical model are validated using commercially available tools for design of isolation systems.
CitationSakhala, P., Mandke, D., Dasabai, B., Burli, S. et al., "Effective Powertrain Isolation of Off-Highway Vehicles," SAE Technical Paper 2019-28-0106, 2019, https://doi.org/10.4271/2019-28-0106.
Data Sets - Support Documents
|[Unnamed Dataset 1]|
|[Unnamed Dataset 2]|
|[Unnamed Dataset 3]|
|[Unnamed Dataset 4]|
|[Unnamed Dataset 5]|
|[Unnamed Dataset 6]|
|[Unnamed Dataset 7]|
|[Unnamed Dataset 8]|
|[Unnamed Dataset 9]|
|[Unnamed Dataset 10]|
|[Unnamed Dataset 11]|
|[Unnamed Dataset 12]|
- Rao, S.S. , Mechanical Vibrations (Pearson Publications, 2011).
- Smollen, L.E. , “Systems, Generalized Matrix Method for the Design and Analysis of Vibration-Isolation,” The Journal of the Acoustical Society of America 40(1):195-204, 1966.
- Kolte, S.U. , “A Particle Swarm Optimization Tool for Decoupling Automotive Powertrain Torque Roll Axis,” SAE Technical Paper 2014-01-1687, 2014, doi:10.4271/2014-01-1687.
- Narayan, V., Neihguk, D., Pahwa, G.S., Lunia, P. et al. , “Design and Development for Automobile Powertrain Mounts Using Low Fidelity Calculators,” SAE Technical Paper 2016-28-0185, 2016, doi:10.4271/2016-28-0185.
- Erdelyi, H.E. , (2013), Powertrain Mounting System Layout for Decoupling Rigid-Body Modes in the Vehicle Concept Design Stage, SAE Technical Paper 2013-01-1706, doi:10.4271/2013-01-1706
- Racca, R. , “How to Select Powertrain Isolators for Good Performance and Long Service Life,” Journal of International Off-Highway Meeting & Exposition, 1982.
- Singh, T.J. , “Analytical Methods of Decoupling the Automotive Engine Torque Roll Axis,” Journal of Sound and Vibration 85-114, 2000.
- Rao, K.N. , “Torque Roll Axis and its Influence on Automotive Engine Mountings,” Journal of the Indian Institute of Science, 1962.
- Moore, S. , “Analytical Modelling of Single and Two-Stage Vibration Isolation Systems,” Journal of Acoustics, 2011.
- Shane Sui, J., Hoppe, C., and Hirshey, J. Powertrain Mounting Design Principles to Achieve Optimum Vibration Isolation with Demonstration Tools, in Noise & Vibration Conference and Exhibition, 2003, SAE International.
- Parthsarathy, H. , “Estimation of Parameters in a Lumped Mass, Spring and Damper Model of a Single Stage Mechanical System,” 2016.