Study on relationship between tire rolling resistance coefficient and damping ratio using experimental modal analysis

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Study on relationship between tire rolling resistance coefficient and damping ratio using experimental modal analysis

 

Author: Chan, Tak-cheung
Title: Study on relationship between tire rolling resistance coefficient and damping ratio using experimental modal analysis
Year: 1999
Subject: Automobiles -- Tires -- Testing
Rolling contact
Modal analysis
Hong Kong Polytechnic University -- Dissertations
Department: Multi-disciplinary Studies
Dept. of Mechanical Engineering
Pages: viii, 71, [98] leaves : ill. (some col.) ; 31 cm
Language: English
InnoPac Record: http://library.polyu.edu.hk/record=b1479246
URI: http://theses.lib.polyu.edu.hk/handle/200/1961
Abstract: Rolling resistance of tires is mostly related to energy consumption and emission of pollution substance of vehicles. Lower rolling resistance of tire will have low fuel consumption in vehicles. Reducing the rolling resistance coefficient of tire is recognized to be a significant subject in the world. Before, the rolling resistance of tire was determined using expensive equipment and it was time consumable. A simple and cheaper testing method to determine the tire rolling resistance is beneficial to the tire designer and manufacturer. Mathematical modeling for rolling resistance of tire is wroth to develop in the market. This study deals with the relationship between the rolling resistance coefficient and damping factors of tire by experimental modal analysis. Modal analysis is used to yield the modal frequency and damping factors of a tire under a measured input force (Harmonic excitation) and tire pressure. Frequency Response Function (FRF) of tire is measured directly by a digital signal analyzer (FFT analyzer). The modal parameters and mode shape of tire can be estimated from the FRF by using a "Tire modal analysis program". The project is to provide information for the establishment of a calculation model for rolling resistance by using directly the modal parameters obtained from the experiment.

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