Brush tyre models for large camber angles and steering speeds
Artikel i vetenskaplig tidskrift, 2020

In this paper, we discuss three improved brush models. The first one deals with the coupling between the slip and spin parameters and is valid for relatively high steering speed and small camber angles; the second one is more complex and considers the presence of a two-dimensional velocity field inside the contact patch due to large camber angles; the third one is more general and combines both the previous formulations. For the last two models, the investigation is conducted with respect to a rectangular contact patch, for which we show that three different regions can be identified, each of them corresponding to a different steady-state solution for the deflection of the bristle. Furthermore, from the transient analysis it emerges that each region can be in turn separated into an area in which steady-state conditions reign and another one in which the transient solution takes place. An asymptotic analysis is carried out for the three models and it is shown that the solutions are equivalent to the ones predicted by the standard brush theory for small values of the spin ratio and camber angle. Finally, a comparison is performed amongst the models to highlight the differences in the predicted tyre characteristics.

transient dynamics

two-dimensional theory

nonlinear theory

transport equation

Tyre modelling

brush models

Författare

Luigi Romano

Chalmers, Mekanik och maritima vetenskaper, Fordonsteknik och autonoma system

Fredrik Bruzelius

Chalmers, Mekanik och maritima vetenskaper, Fordonsteknik och autonoma system

Statens Väg- och Transportforskningsinstitut (VTI)

Bengt J H Jacobson

Chalmers, Mekanik och maritima vetenskaper, Fordonsteknik och autonoma system

Vehicle System Dynamics

0042-3114 (ISSN)

Vol. In Press

COVER – Bedömning av CO2 och energieffektivitet hos fordon i verklig användning

Energimyndigheten, 2018-01-01 -- 2021-12-31.

VINNOVA, 2018-01-01 -- 2021-12-31.

Ämneskategorier

Maskinteknik

Teknisk mekanik

Farkostteknik

Styrkeområden

Transport

DOI

10.1080/00423114.2020.1854320

Mer information

Senast uppdaterat

2020-12-21