Railway Vehicle Dynamics - a.y. 2016/2017


CFU: 9

Period (Year/Semester): II/I

Languade: Italian

Required/expected prior knowledge: Nothing

Lecturers: Mario Terzo

Course objectives:
The course aims to provide the basic knowledge for learning the dynamic phenomena that characterize the railway vehicle. The interaction of the vehicle with the outside environment is approached starting from the study of the wheel-rail contact, and then the issues related to the dynamics of the wheelset, bogie and vehicle body are detailed.

Tables of contents: 
Wheel-rail contact, adhesion in railway, geometric slip, kinematic slip, normal interaction, Hertz theory, tangential interaction, pseudo-slip condition, Kalker’s linear model, Johnson-Vermeulen model, Kalker's complete model, heuristic theories.
Railroad equipment, gauge, track profiles, wheel profiles, equivalent conicity, gravitational stiffness.
Wheelset, independent wheelset, differential effect, hunting oscillation, Redtenbacher formula, Klingel formula.
Dynamics of wheelset, bogie and vehicle body, guidance, stability.
Railway safety, derailment, uncompensated acceleration, over-elevation line, roller centers, active and passive suspensions, primary and secondary suspension systems, vertical dynamics. Braking systems.
Pantograph-catenary interaction.

Education method: 
Lectures and laboratory.

Textbooks and learning aids:
M. Panagin : Dinamica del veicolo ferroviario, Levrotto e Bella, Torino
V.K. Garg, R.V. Dukkipati : Dynamics of railway vehicle systems, Academic Press Canada
Class notes.

Assessment will be oral.

Seminars/Workshop with CFU

© 2014 Mechanical Engeenering Courses
Department of Industrial Engineering
University of Naples Federico II
Realization and Administration: Rosario Moreschi