Modern vehicles are equipped with several active and passive devices whose function is to increase active safety. This paper is focused on the anti-roll stiffness influence on vehicle handling, and follows a theoretical approach. The work firstly develops a quadricycle theoretical model, useful to study the influence of anti-roll stiffness on the vehicle local stability. The model, involving non-linear phenomena, is simplified by proper linearizations. This procedure allows local stability analysis with low computational load. At the same time, the linearized model takes into account the dynamic effects induced by load transfers through a tyre-road interaction model sensitive to the vertical load. The study is conducted considering the anti-roll stiffnesses of the two axles as parameters. The proposed model defines the relationship between the anti-roll bars stiffness and the system state. In order to realize an adaptive system able to provide a variable roll stiffness, a semiactive anti-roll bar prototype, employing magnetorheological fluid, is described. Such device gives the possibility to quickly change the roll stiffness, according to the system state, to preserve its stability.

On the Influence of Anti-Roll Stiffness on Vehicle Stability and Proposal of an Innovative Semi-Active Magnetorheological Fluid Anti-Roll Bar / Farroni, Flavio; Giordano, Daniele; Russo, Michele; Terzo, Mario; Timpone, Francesco. - ELETTRONICO. - (2011), pp. 541-554. (Intervento presentato al convegno 4th International Symposium on Multibody Systems and Mechatronics (MUSME 2011 - IFToMM - FeIbIM) tenutosi a Escuela Técnica Superior de Ingeniería del Diseño of the Universidad Politécnica de Valencia, Valencia, Spain nel October 25-28, 2011).

On the Influence of Anti-Roll Stiffness on Vehicle Stability and Proposal of an Innovative Semi-Active Magnetorheological Fluid Anti-Roll Bar

FARRONI, FLAVIO;GIORDANO, DANIELE;RUSSO, MICHELE;TERZO, MARIO;TIMPONE, FRANCESCO
2011

Abstract

Modern vehicles are equipped with several active and passive devices whose function is to increase active safety. This paper is focused on the anti-roll stiffness influence on vehicle handling, and follows a theoretical approach. The work firstly develops a quadricycle theoretical model, useful to study the influence of anti-roll stiffness on the vehicle local stability. The model, involving non-linear phenomena, is simplified by proper linearizations. This procedure allows local stability analysis with low computational load. At the same time, the linearized model takes into account the dynamic effects induced by load transfers through a tyre-road interaction model sensitive to the vertical load. The study is conducted considering the anti-roll stiffnesses of the two axles as parameters. The proposed model defines the relationship between the anti-roll bars stiffness and the system state. In order to realize an adaptive system able to provide a variable roll stiffness, a semiactive anti-roll bar prototype, employing magnetorheological fluid, is described. Such device gives the possibility to quickly change the roll stiffness, according to the system state, to preserve its stability.
2011
On the Influence of Anti-Roll Stiffness on Vehicle Stability and Proposal of an Innovative Semi-Active Magnetorheological Fluid Anti-Roll Bar / Farroni, Flavio; Giordano, Daniele; Russo, Michele; Terzo, Mario; Timpone, Francesco. - ELETTRONICO. - (2011), pp. 541-554. (Intervento presentato al convegno 4th International Symposium on Multibody Systems and Mechatronics (MUSME 2011 - IFToMM - FeIbIM) tenutosi a Escuela Técnica Superior de Ingeniería del Diseño of the Universidad Politécnica de Valencia, Valencia, Spain nel October 25-28, 2011).
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/416315
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact