TY  - JOUR
PY  - 2013//
TI  - Identification of a wheel-rail adhesion coefficient from experimental data during braking tests
JO  - Proceedings of the Institution of Mechanical Engineers, Part F: Journal of rail and rapid transit
A1  - Malvezzi, Monica
A1  - Pugi, Luca
A1  - Papini, Susanna
A1  - Rindi, Andrea
A1  - Toni, Paolo
SP  - 128
EP  - 139
VL  - 227
IS  - 2
N2  - The forces that occur in the wheel-rail interface significantly affect vehicle dynamics, especially in the longitudinal direction. Conventionally, the tangential component of the force exchanged between the rail and the wheel is expressed as the product of the normal component of the force, and the so-called adhesion coefficient. This ratio depends on several parameters that are usually summarized in the term 'adhesion conditions'. When the adhesion conditions are degraded (for example, in cases of rain, fog, ice, dead leaves, etc.), and the vehicle is accelerating or braking, pure rolling conditions between the wheels and the rails do not hold any more, and macroscopic sliding occurs on one or more of the wheels. The aim of this work is to identify a relationship between adhesion coefficient and some parameters, namely wheel sliding and train speed, starting from a set of experimental measurements, obtained from test runs conducted with artificially degraded adhesion conditions.<p />  <p>Language: en</p>
LA  - en
SN  - 0954-4097
UR  - http://dx.doi.org/10.1177/0954409712458490
ID  - ref1
ER  -