ATTENTION/WARNING - NE PAS DÉPOSER ICI/DO NOT SUBMIT HERE

Ceci est la version de TEST de DIAL.mem. Veuillez ne pas soumettre votre mémoire sur ce site mais bien à l'URL suivante: 'https://thesis.dial.uclouvain.be'.
This is the TEST version of DIAL.mem. Please use the following URL to submit your master thesis: 'https://thesis.dial.uclouvain.be'.
 

Characterization of wet grip and analysis of its effect on car handling

Davreux, Loïc ; Ziberi, Andi
(2023)

Files

Davreux_64201800_Ziberi_61331800_2023.pdf
  • Closed access
  • Adobe PDF
  • 5.52 MB

Details

Supervisors
Docquier, Nicolas ; Fisette, Paul
Faculty
Ecole polytechnique de Louvain
Degree label
Master [120] : ingénieur civil mécanicien, à finalité spécialisée
Abstract
The aim of this thesis is to study the effects of tire characteristics on the driving of a road vehicle on wet surfaces. Nowadays, many car accidents occur on wet roads. In these conditions, drivers are less able to understand the physical limitations of their vehicle. This often leads to a loss of grip and a loss of driving control. This subject is therefore very important for manufacturers, as better knowledge facilitates the development of new systems to make the driving easier for customers. We currently know how to characterise the lateral dynamics of a tire experimentally, but we do not yet know the impact that this can have on the driving behaviour of a vehicle. In order to address our thesis’s subject, we are going to analyse numerically the influence of tires on driving. To do this, we will first study an analytical model that allows us to characterise the lateral dynamics of the tire. This analytical formulation is known as the Bakker model. Then, using a reference curve obtained experimentally, we will create fictitious curves using the Bakker model. Changing the Bakker curve is equivalent to changing the tires. The fictitious curves will be obtained by modifying one important parameter of the reference curve at a time. Those parameters will be our KPIs (Key Performance Indicators). We will then introduce our modified curves into our simulation environment to model the car’s lateral dynamics and be able to study the impact of our KPIs on the behaviour of the vehicle. This allows to analyse various parameters such as speed, steering angle, deviation from a target trajectory, etc. Our objective will be to carry out various manoeuvres to observe the behaviour of the car in different scenarios. We will then try to understand these results based on theoretical notions and link them to the tire lateral properties.