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Risorse bibliografiche
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Scheda Riassuntiva
Anno Accademico 2017/2018
Scuola Scuola di Ingegneria Industriale e dell'Informazione
Insegnamento 097557 - VEHICLE DYNAMICS AND CONTROL A
Docente Cheli Federico
Cfu 10.00 Tipo insegnamento Monodisciplinare

Corso di Studi Codice Piano di Studio preventivamente approvato Da (compreso) A (escluso) Insegnamento
Ing Ind - Inf (Mag.)(ord. 270) - BV (483) MECHANICAL ENGINEERING - INGEGNERIA MECCANICA*AZZZZ097521 - VEHICLE DYNAMICS AND CONTROL B
097557 - VEHICLE DYNAMICS AND CONTROL A

Programma dettagliato e risultati di apprendimento attesi

Objectives and content of the course

This course provides the basic knowledge relating to the dynamic behavior of vehicles and their passive/active control, as well as the problems associated with them (performances, comfort, handling, safety, etc.).

This course examines the analytical and numerical tools needed to model the vehicle on road and rail in order to analyze the dynamic behavior in different driving conditions.

Some models of road and rail vehicle simulation are described, with varying levels of complexity, taking into account the presence of the active control and based also on current regulations for approval.

 

Description

General notions. The dynamic behavior on the straight line and cornering of the vehicle. Concepts of "performance", "handling", “stability”, "ride comfort" and “safety”.

Analysis of vehicle dynamics with Multi-Body techniques. Definition of space cinematic. Equations of motion in matrix form for nonlinear systems: the minimal set and the Lagrange multipliers methods. Steady state and transient conditions, linearization; perturbed motion analysis.

The characteristics of the wheel-runway. Tire-road: sliding and lateral slip angles, references to the main theories: "stretched string model", "brush model", "Magic Formula". Wheel-rail: pseudo slippages, references to the main contact theories.

  1. Longitudinal dynamics, acceleration and braking motion, aerodynamic forces (notes).
  2. Ride comfort. The irregularity of the runway: random vibrations, track and road irregularity. Human response to vibration, and effects on health. Vehicle models for vertical dynamics, comfort indices (regulations),deformability effects.
  3. Analysis of lateral dynamics. The equations of motion in a straight line and in cornering conditions with simplified models: definition of steady state and transient condition; linearization and stability analysis; sensitivity analysis. Behavior simulation on the straight line and cornering of the complete vehicle.

Modeling of road vehicles - Dynamics of the car on the straight line and cornering with simplified models; steady state and transient definition; linearization and stability analysis; vehicle over and under steering concepts, handling diagrams. Simulation of the behavior on the straight and cornering of the complete vehicle (MB models). Safety and regulations.

Modeling of railway vehicles - The dynamics of the wheelset and of the car in the straight line. Safety and regulations.

Active control in vehicles. Application examples. Controlled suspension, ABS, VDC, 4WS, 4WD, steering train bogies, ADAS systems.

 


Note Sulla Modalità di valutazione

Organization of the course and verification method

 

The exam consists of a final mandatory oral test (there are no intermediate tests).

The attendance of the numerical practices (organized by working together divided in groups) and of the experimental laboratories are compulsory: students must submit the collection of the simulations at the time of final test (written reports) and the results will be discussed and examined.

There are in particular two experimental exercises on a real instrumented vehicle (mobile lab) and an ABS / VDC Hardware in the Loop indoor Test. The experimental results are discussed and compared with those obtained by the simulation models developed by the students during the course.

Seminars of company experts and company technical visits will be organized.


Bibliografia
Risorsa bibliografica obbligatoriaF.Cheli, G.Diana, Advanced Dynamics of Mechanical Systems, Editore: Springer, Anno edizione: 2015
Risorsa bibliografica obbligatoriaLesson/esercise notes BEEP on line
Risorsa bibliografica facoltativaV.K. Garg, R.V. Dukkipati, Dynamics of Railway Vehicle System, Editore: Academic Press
Risorsa bibliografica facoltativaJ.Y.Wong, Theory of Ground Vehicle, Editore: Wiley & Sons
Risorsa bibliografica facoltativaM.Guggiani, THe Science of Vehicle Dynamics, Editore: Springer

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MSC Adams NO VERSIONE LIMITATA
MSC Nastran NO VERSIONE LIMITATA
MSC Patran NO VERSIONE LIMITATA
Notepad++ Vedi sito produttore SI SI
VI Grade (VI Car Real Time) - NO NO

Mix Forme Didattiche
Tipo Forma Didattica Ore didattiche
lezione
56.0
esercitazione
14.0
laboratorio informatico
46.0
laboratorio sperimentale
8.0
progetto
0.0
laboratorio di progetto
0.0

Informazioni in lingua inglese a supporto dell'internazionalizzazione
Insegnamento erogato in lingua Inglese
Disponibilità di materiale didattico/slides in lingua inglese
Disponibilità di libri di testo/bibliografia in lingua inglese
Possibilità di sostenere l'esame in lingua inglese
Disponibilità di supporto didattico in lingua inglese
schedaincarico v. 1.7.2 / 1.7.2
Area Servizi ICT
30/09/2022