Title: Experimental verification of the new methodology for assessment of the relative adhesion

Authors: Milan Klapka; Ivan Mazůrek; Petr Novák

Addresses: Faculty of Mechanical Engineering, Institute of Machine and Industrial Design, Brno University of Technology, Brno, 616 69, Czech Republic ' Faculty of Mechanical Engineering, Institute of Machine and Industrial Design, Brno University of Technology, Brno, 616 69, Czech Republic ' Faculty of Mechanical Engineering, Institute of Machine and Industrial Design, Brno University of Technology, Brno, 616 69, Czech Republic

Abstract: Keeping the vehicle suspension in good technical condition is essential for safe driving. This paper deals with experimental verification of new assessment methods for the resonance adhesion testing of the car suspension. Results of tests of more than 400 unique passenger cars assessed according to established EUSAMA methodology are compared with the results obtained by a suggested new methodology called standardised adhesion (STA). Additionally, the effect of excitation stroke amplitude is analysed experimentally on the assessed relative adhesion. The established EUSAMA methodology rather examines suspension in terms of handling the car under prescribed test conditions; however, the required testing conditions are outdated for current designs of suspension. The suggested STA methodology examines only a real condition of suspension damping under standardised testing conditions, which is its main advantage. The obtained results proved that the suggested STA methodology could be either a supplement for or complete replacement of the established methodology for assessment of the suspension technical condition according to EUSAMA prescription which is not completely reliable currently.

Keywords: relative adhesion; suspension; shock absorber; EUSAMA; technical diagnostics.

DOI: 10.1504/IJVD.2023.131168

International Journal of Vehicle Design, 2023 Vol.91 No.4, pp.342 - 359

Accepted: 06 Dec 2021
Published online: 01 Jun 2023 *

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