Theoretical and experimental analysis to determine the influence of the ageing process of the shock-absorber on safety Online publication date: Wed, 21-Dec-2005
by Andres Garcia Gracia, Felipe Jimenez, Javier Paez, Alfonso Narvaez
International Journal of Vehicle Design (IJVD), Vol. 40, No. 1/2/3, 2006
Abstract: The correct maintenance of the suspension system elements is important for the safety and comfort of automobiles, but there are no simple and reliable methods to evaluate their state. This paper focuses on shock-absorbers, since they suffer ageing, due to fatigue. The research team has proposed a theoretical-experimental methodology to study the influence of the ageing process of dampers on safety. This methodology solves the difficulties that arise when using pure theoretical or pure experimental approaches. In this methodology, a mathematical model is experimentally validated. Then, manoeuvres that reproduce critical conditions are simulated with several degrees of shock-absorber wear in order to study its influence. As a conclusion, it has been found that the worst condition for safety is curved movement on an irregular surface. Working on these results, the authors are establishing limits for this ageing process based on objective safety criteria.
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