Transient tire slip losses using the brush theory
Artikel i vetenskaplig tidskrift, 2022

Tire slip losses have been shown to have a significant impact on vehicle performance in terms of energy efficiency, thus requiring accurate studies. In this paper, the transient dissipation mechanisms connected to the presence of micro-sliding phenomena occurring at the tire–road interface are investigated analytically. The influence of a two-dimensional velocity field inside the contact patch is also considered in light of the new brush theory recently developed by the authors. Theoretical results align with findings already known from literature but suggest that the camber and turn spins contribute differently to the slip losses and should be regarded as separate entities when the camber angle is sufficiently large. The present work shows that an additional amount of power which relates to the initial sliding conditions is generated or lost during the unsteady-state maneuvers. A simple example is presented to illustrate the discrepancy between the microscopic and macroscopic approaches during a transient maneuver.

transient tire dynamics

tire models

Brush model

slip losses

energy losses

Författare

Luigi Romano

Chalmers, Mekanik och maritima vetenskaper, Fordonsteknik och autonoma system

Francesco Timpone

Universita degli Studi di Napoli Federico II

Fredrik Bruzelius

Chalmers, Mekanik och maritima vetenskaper, Fordonsteknik och autonoma system

Bengt J H Jacobson

Chalmers, Mekanik och maritima vetenskaper, Fordonsteknik och autonoma system

Tire Science and Technology

0090-8657 (ISSN)

Vol. 2022

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

Energimyndigheten (2017-007895), 2018-01-01 -- 2021-12-31.

VINNOVA (2017-007895), 2018-01-01 -- 2021-12-31.

Drivkrafter

Hållbar utveckling

Styrkeområden

Transport

Ämneskategorier

Teknisk mekanik

Farkostteknik

DOI

10.2346/tire.22.20002

Mer information

Senast uppdaterat

2023-02-17