Title: Decoupling tyre and suspension via frequency based substructuring

Authors: Matthew Clontz; Saied Taheri

Addresses: Department of Mechanical Engineering, Virginia Tech MC-0710, 100C Randolph Hall, Blacksburg, VA 24060, USA ' Department of Mechanical Engineering, Virginia Tech MC-0710, 100C Randolph Hall, Blacksburg, VA 24060, USA

Abstract: Noise and vibrations transmitted through the tyre then, subsequently, the suspension has a major impact on the overall ride quality in a passenger vehicle. Much work has been done in the past to evaluate ride comfort subjectively, but recent years have seen a marked increase in the development of objective/analytical methods. The following paper presents a method to mathematically separate the vibrational properties of the tyre and the suspension in order to further understand the mechanism of vibration transmission between the two. Frequency based substructuring (FBS) techniques will be used to decouple the tyre subsystem from the suspension subsystem. In this work, these FBS techniques are applied first to decouple the equations of motion of a simple quarter car system as a proof of concept. Then, a more generalised approach is taken which will be applicable to experimental data.

Keywords: quarter car; frequency based substructuring; FBS; decoupling; tyre; suspension; noise; vibration; ride comfort.

DOI: 10.1504/IJVNV.2017.087905

International Journal of Vehicle Noise and Vibration, 2017 Vol.13 No.2, pp.87 - 104

Available online: 02 Nov 2017

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