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Title: Passive control of piston secondary motion using nonlinear energy absorbers
Authors: Dolatabadi, Nader
Theodossiades, Stephanos
Rothberg, Steve
Keywords: Piston secondary motion
Targeted energy transfer
Nonlinear energy sink
Piston impacts
Issue Date: 2017
Publisher: © American Society of Mechanical Engineers (ASME)
Citation: DOLATABADI, N., THEODOSSIADES, S. and ROTHBERG, S., 2017. Passive control of piston secondary motion using nonlinear energy absorbers. Journal of Vibration and Acoustics: Transactions of the ASME, 139 (5), 051009.
Abstract: The impulsive behaviour of the piston in the cylinder liner plays a key role in the Noise, Vibration and Harshness (NVH) of internal combustion engines. There have been several studies on the identification and quantification of piston impact action under various operation conditions. In the current study, the dynamics of the piston secondary motion are initially explored in order to describe the aggressive oscillations, energy loss and noise generation. The control of piston secondary motion (and thus, impacts) is investigated using a new passive approach based on energy transfer of the highly transient oscillations to a nonlinear absorber. The effectiveness of this new method for improving the piston impact behaviour is discussed using a preliminary parametric study that leads to the conceptual design of a nonlinear energy absorber.
Description: This paper is closed access until 28th December 2017.
Sponsor: This work was supported by the EPSRC [Encyclopaedic Program Grant EP/G012334/1].
Version: Accepted for publication
DOI: 10.1115/1.4036468
URI: https://dspace.lboro.ac.uk/2134/24490
Publisher Link: https://doi.org/10.1115/1.4036468
ISSN: 1528-8927
Appears in Collections:Closed Access (Mechanical, Electrical and Manufacturing Engineering)

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