The topic of this paper is to deal with the filtering of medium and high frequency excitations generated by electrified powertrains. It is now recognized that the whining noise generated by the electromagnetic forces and/or the meshing process of the transmission can propagate to the car-body through the rubber mounts. In the design phase, the prediction of the structure borne contribution requires a good knowledge of the dynamic behavior of the rubber mounts. The main issue is the stiffness of the mounts which cannot be modeled as pure springs. In fact, the dynamic behavior of a mount is governed by the material rheology and its internal resonances. The work presented in this paper proposes a simulation workflow for the rubber mounts dynamic model and a methodology for the dynamic stiffness measurement including the sensitivity with the preload and with the amplitude of the excitation. Finally, experimental and digital data are compared to assess the simulation method.
Characterization and Modelling of Mounts for Electric Powertrains
Sae Int. J. Adv. and Curr. Prac. in Mobility
12th International Styrian Noise, Vibration & Harshness Congress: The European Automotive Noise Conference ; 2022
Sae International Journal of Advances and Current Practices in Mobility ; 5 , 2 ; 952-964
2022-06-15
13 pages
Conference paper
English
Characterization and Modelling of Mounts for Electric Powertrains
British Library Conference Proceedings | 2022
|Electric and Hybrid Electric Powertrains
Springer Verlag | 2021
|Hybrid electric locomotive powertrains
IEEE | 2014
|Modelling and optimisation of powertrains
Automotive engineering | 2005
|Modelling and optimisation of powertrains
Automotive engineering | 2005
|