Targeted energy transfer and modal energy redistribution in automotive drivetrains

E. Motato, A. Haris, S. Theodossiades, M. Mohammadpour, H. Rahnejat, P. Kelly, A. F. Vakakis, D. M. McFarland, L. A. Bergman

Research output: Contribution to journalArticle

Abstract

The new generations of compact high output power-to-weight ratio internal combustion engines generate broadband torsional oscillations, transmitted to lightly damped drivetrain systems. A novel approach to mitigate these untoward vibrations can be the use of nonlinear absorbers. These act as Nonlinear Energy Sinks (NESs). The NES is coupled to the primary (drivetrain) structure, inducing passive irreversible targeted energy transfer (TET) from the drivetrain system to the NES. During this process, the vibration energy is directed from the lower-frequency modes of the structure to the higher ones. Thereafter, vibrations can be either dissipated through structural damping or consumed by the NES. This paper uses a lumped parameter model of an automotive driveline to simulate the effect of TET and the assumed modal energy redistribution. Significant redistribution of vibratory energy is observed through TET. Furthermore, the integrated optimization process highlights the most effective configuration and parametric evaluation for use of NES.

Original languageEnglish (US)
Pages (from-to)169-190
Number of pages22
JournalNonlinear Dynamics
Volume87
Issue number1
DOIs
StatePublished - Jan 1 2017

Keywords

  • Automotive drivetrain
  • Modal energy redistribution
  • Nonlinear energy sink
  • Targeted energy transfer

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Aerospace Engineering
  • Ocean Engineering
  • Mechanical Engineering
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Motato, E., Haris, A., Theodossiades, S., Mohammadpour, M., Rahnejat, H., Kelly, P., Vakakis, A. F., McFarland, D. M., & Bergman, L. A. (2017). Targeted energy transfer and modal energy redistribution in automotive drivetrains. Nonlinear Dynamics, 87(1), 169-190. https://doi.org/10.1007/s11071-016-3034-4