Joao Pombo

TL;DR: In this article, a generic wheel-rail contact detection formulation is presented in order to determine online the contact points, even for the most general three-dimensional motion of the wheelset, which allows the study of lead and lag flange contact scenarios.

TL;DR: In this paper, a computational tool that is able to predict the evolution of the wheel profiles for a given railway system, as a function of the distance run, is presented, based on a commercial multibody software to study the railway dynamic problem and a purpose-built code for managing its pre and post-processing data in order to compute the wear.

TL;DR: In this paper, a detailed multibody model of the catenary and the pantograph is presented for the identification of the dynamic behaviour of the pantographs and of the interaction phenomena in the catenaries of high-speed trains due to the action of aerodynamics forces.

TL;DR: In this paper, a multibody formulation with Cartesian coordinates is used to describe the kinematic structure of rigid bodies and joints that constitute the vehicle and a track parameterization methodology is implemented for the accurate description of the track spatial geometry emphasizing small radius curves, including its irregularities.

TL;DR: In this paper, a greater understanding of the wear mechanisms and transitions occurring in wheel s... is proposed to develop more durable wheel materials to cope with the new specifications being imposed on wheel wear.