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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/20430

Title: Targeted energy transfer in automotive powertrains
Authors: Haris, Ahmed
Motato, Eliot
Theodossiades, Stephanos
Vakakis, A.F.
Bergman, L.A.
McFarland, D.M.
Struve, Ben
Issue Date: 2015
Publisher: © Polish Academy of Sciences
Citation: HARIS, A. ...et al., 2015. Targeted energy transfer in automotive powertrains. Presented at the 13th International Conference on Dynamical Systems – Theory and Applications (DSTA-2015), Lodz, Poland, 7-10th Dec., Vol. 1, pp. 245 - 254.
Abstract: Torsional oscillations generated by the internal combustion engine induce various NVH phenomena in the drivetrain system, one being transmission rattle. Palliatives devices such as the clutch predampers or dual mass flywheel have been used to mitigate these NVH phenomena. However, usually these devices are effective over a limited range of frequencies, and not so for broadband transient phenomenon, such as any impulsive actions. This paper considers the Targeted Energy Transfer (TET) method to mitigate torsional vibrations in automotive powertrains. TET is a concept which attempts to direct the mechanical (vibration) energy (in a nearly irreversible manner) from a source (primary system) to a strongly nonlinear attachment (Nonlinear Energy Sink – NES), where it is absorbed, redistributed and/or dissipated. In contrast to the classical powertrain palliative methods, NES should be capable of operating over a broader band of frequencies (with the additional aim of being lightweight and compact). Although the TET concept has been extensively studied for translational systems, there is a dearth of studies for rotational (torsional) ones. In the present work, preliminary parametric studies are performed on a reduced automotive powertrain model, incorporating a NES attachment. The NES parameters, including nonlinear stiffness, viscous linear damping and inertia are varied in order to determine NES effects on engine order (EO) vibration.
Description: This paper is a conference paper.
Version: Published
URI: https://dspace.lboro.ac.uk/2134/20430
Publisher Link: http://www.dys-ta.com/volumes15_contents
Appears in Collections:Conference Papers and Contributions (Mechanical, Electrical and Manufacturing Engineering)

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