Subject: VEHICLE DYNAMICS (A.A. 2024/2025)
Unit Dinamica del Veicolo
Mechanical Engineering (lesson)
Meccanica del Veicolo
Understanding of fundamentals of vehicle dynamics, consisting of basic models and analytical – computational tools.
Tyres (kinematics; tire slips; longitudinal and lateral forces; aligning torque; camber thrust; brush model; relaxation length; semi-empirical formulae). (1 CFU).
Lateral dynamics (planar double track and single track models; steady-state cornering; steering pad; effect of side forces; handling diagram analysis; understeer gradient; stability analysis). (3 CFU).
Mechanical Vibrations (Lagrange equations; introduction to multibody dynamics; single DOF vibrating systems; nDOF vibrating systems; modal analysis; time-domain and frequency-domain responses; stability analysis) (3 CFU)
Vertical dynamics (road surfaces; non-linear and linearized models; quarter car model; ride and comfort analysis; tuning of suspension springs and shock absorbers). (1 CFU).
Motorcycle dynamics (longitudinal dynamics; steering geometry; effects of gyroscopic moments; transition from straight motion to steady-state cornering; steady-state cornering). (1 CFU).
Lectures by staff (projector and blackboard), technical seminars by specialists from automotive industry. Auxiliary tools consisting of videos (each of them equivalent to three hours lecturing, and to one lecture of the course), and notes (divided in five parts; both notes and videos available online). Both notes and videos include the whole contents of the course. A detailed list of contents of the course is published after the last lecture, including all the topics asked at the exam.
Oral examination. The exam consists of 3 questions on the topics covered by the course; the questions are asked sequentially and individually to each candidate, who writes at the desk his answers, with the possibility of adding oral comments and clarifications. Candidates must complete their exam in a maximum time of two hours. At the end of each answer, each candidate receives qualitative marks; in the case of no answer, or of very poor or completely wrong answer, the exam ends. On the contrary, at the end of the exam the candidates receive their final marks; in the case of positive result, the final marks will be computed as the average value of those obtained from the 3 answers. Withdrawing is always possible, before receiving the final marks; but the final marks cannot be refused. Regarding remote examinations, candidates receive an invitation e-mail for connection a few days before their exam. Candidates need a pc with microphone and webcam, a pen (or pencil) and some sheets of paper. The exam cannot be recorded, and in case of infractions it is not valid.
Learning of basic methods and techniques of vehicle dynamics, developing the skills necessary to autonomously deepen technical topics, in order to effectively face professional challenges or to undertake further studies.
W.F. Milliken & D.L. Milliken, Race car vehicle dynamics, SAE, 1995.
H. Pacejka, Tyre and vehicle dynamics, SAE, 2012.
M. Guiggiani, The science of vehicle dynamics, Springer, 2013.
A. Luongo, M. Ferretti, S. Di Nino, Stabilità e Biforcazione delle Strutture, Sistemi Statici e Dinamici, Società editrice Esculapio, 2022.