In this paper, an innovative Hardware In the Loop (HIL) architecture is presented to test braking on board subsystems on full-scale roller-rigs. The new approach is based on an innovative control strategy to reproduce a generic wheel-rail adhesion pattern on the roller-rig and particularly suitable for degraded adhesion conditions. The presented strategy is also implemented by the full-scale ro...

Context of the study and associated problem: Due to its railroad activities, the SNCF (French National Railway Company) has to face with the energy challenge. If its first motivations are based on short term an economic concern, the SNCF also wants to anticipate the decrease of oil reserves and wishes to be an actor of the environment protection. To achieve this goal, the SNCF has engaged resea...

Over 50 years, a large number of research and development projects with respect to the use of cementitious and concrete materials for manufacturing railway sleepers have been significantly progressed in Australia, Europe, and Japan (Wang, 1996; Murray and Cai, 1998; Wakui and Okuda, 1999; Esveld, 2001; Freudenstein and Haban, 2006; Remennikov and Kaewunruen, 2008). Traditional sleeper materials...

Rail corrugation is usually generated in modern railway transportations, such as high-speed railway, urban and heavy-haul railway. It one of the major excitations to wheel–rail dynamic interaction, which will cause extra vibration noise, failures, or even risk derailment vehicle its components. A dynamics model a locomotive considering traction power from electric motor wheelset through gear tr...

Incidents in the Swedish railway have been observed where a significant and sudden loss of brake performance occurs winter conditions, on trains equipped with composite tread blocks (CBB). There is necessity to establish test methods that can be used for evaluation materials under well-controlled laboratory facilitate an understanding friction mechanisms between block steel wheel. This work sou...

It is important to know tribological properties of rail and wheel for predicting the service life both components. In railway, system open harsh working condition can be seen as contact stress between extremely high. The behaviour varies depending on chosen rail-wheel materials also third body (water, humidity, lubricant, debris combination these elements). coefficient friction wear resistance ...

A brake hardware-in-the-loop simulation (HILS) system for a railway vehicle is widely applied to estimate and validate braking performance in research studies and field tests. When we develop a simulation model for a full vehicle system, the characteristics of all components are generally properly simplified based on the understanding of each component's purpose and interaction with other compo...