ETD

Archivio digitale delle tesi discusse presso l'Università di Pisa

Tesi etd-06202018-122644


Tipo di tesi
Tesi di laurea magistrale
Autore
GASPARI, YURI
URN
etd-06202018-122644
Titolo
Influence of tire wear and asphalt temperature on vehicle stopping distance
Dipartimento
INGEGNERIA CIVILE E INDUSTRIALE
Corso di studi
INGEGNERIA DEI VEICOLI
Relatori
relatore Prof. Guiggiani, Massimo
tutor Ing. Murgia, Stefano
Parole chiave
  • stopping distance
  • spazio arresto
  • slittamento
  • slip
  • pneumatico
  • mu
  • longitudinale
  • longitudinal
  • behaviour
  • behavior
  • attrito
  • temperatura
  • temperature
  • Tire
  • usura
  • wear
Data inizio appello
16/07/2018
Consultabilità
Completa
Riassunto
The main goal of the thesis is to evaluate the influence of tire wear and asphalt temperature on vehicle stopping distance, longitudinal acceleration and friction coefficient.
In order to achieve this objective, experimental tests were carried out on a FCA group vehicle, for various conditions of tire wear and asphalt temperature, and after data processing it has been possible to evaluate the influence of the two factors, mentioned above, on vehicle stopping distance.
In the first phase of the studies the vehicle mathematical model has been developed, which allowed to obtain typical tire behavior, longitudinal acceleration and friction coefficient directly from the available signals coming from the CAN network of the test vehicle.
Then, three tests campaigns were carried out, which provided the basis for the implementation of the model. In order to process data, a Matlab software has been developed which allowed to upload data and to evaluate vehicle stopping distance, acceleration and friction coefficient in a systematic way.
It was therefore possible to predict stopping distance, acceleration and friction coefficient for a certain brand of tire, asphalt temperature and tire wear.
File