A Generic Suspension Model for Middle Class Passenger Vehicles

Ward, D.; Hanke, O.; Bertram, Torsten; Hiller, Manfred; Bardini, Roberto

doi:10.4271/2001-01-1280

Cited by 6 publications

(3 citation statements)

References 4 publications

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“…By increasing the oil compressibility, the area of the hysteretic loop also increases, reflecting a higher level of energy accu- mulation. The effect of excitation frequency is similar to that of oil compressibility [8].…”

Section: Introductionmentioning

confidence: 53%

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Influence of a shock absorber model on vehicle dynamic simulation

Calvo

López-Boada

García

et al. 2009

Proceedings of the Institution of Mechanical Engineers, Part D:

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The dynamic simulation of mechanical systems is an essential tool in vehicle design. This work analyses the influence of a shock absorber model on a vehicle's dynamic behaviour by means of a simulation-based model. The real behaviour of a European mediumrange car shock absorber has been obtained by means of a test rig. From the damper's real behaviour, three mathematical models were generated, increasing the complexity. An existing full vehicle simulation application (CarSim TM ) was used for this particular study. The vehicle's behaviour was analysed for typical driving manoeuvres taking into account lateral, vertical, and longitudinal forces and was compared with the results obtained with the different shock absorber models developed. As a result of this paper, it was demonstrated that, in order to obtain results with an acceptable level of accuracy, it is not necessary to rely on extremely complex shock absorber models.

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Section: Introductionmentioning

confidence: 53%

“…2 Testing results for the hysteretic loop of the damper mulation. The effect of excitation frequency is similar to that of oil compressibility [8].…”

Section: Introductionmentioning

confidence: 53%

Influence of a shock absorber model on vehicle dynamic simulation

Calvo

López-Boada

García

et al. 2009

Proceedings of the Institution of Mechanical Engineers, Part D:

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“…Computer model results have been confirmed by experimental tests with enough accuracy to validate the hypothesis obtained by the mathematical model. There have been numerous studies about suspension systems and brake performances optimization and their interactions, such as (Chio et al, 2005;Ward et al, 2001;Lee et al, 2005;Simms and Crolla, 2002;Delaigue and Eskandarian, 2004;Kang, 2005;Alleyne et al, 1995). However, in each case it was supposed that all vehicle components are in optimal conditions, without considering how the wearing of the shock absorbers affects brake performance.…”

Section: Introductionmentioning

confidence: 97%

Influence of shock absorber wearing on vehicle brake performance

Calvo

Díaz

García

et al. 2008

Int.J Automot. Technol.

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In order to safely maintain a vehicle, it is necessary to verify the most important systems that affect safety during Periodic Motor Vehicle Inspections (PMVIs). In a previous paper, a test method and validation criteria were suggested by the authors to verify shock absorber status during PMVIs, as they are a fundamental component that may wear out during a vehicle's life. In this paper, variations of the performance of the vehicle's brakes resulting from shock absorber wearing have been analyzed, in order to confirm whether the suggested criteria is valid for taking into account longitudinal forces and pitch movement on the vehicle. A simulation-based study was conducted with several configurations of a worn damper on a vehicle driving on two virtual roads: smooth and undulating. The results confirmed that the damping coefficient established as an acceptable value to verify the shock absorber status in PMVIs is also valid considering the forces involved in a braking maneuver.

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