FERNÁNDEZ ACEITUNO , Javier

La tesis titulada "Multibody modeling of railway vehicles and experimental validation", y realizada por Javier Fernández Aceituno, se centra en la comparación de simulaciones eficientes de vehículos ferroviarios en vías de geometría arbitraria e irregular frente a resultados experimentales. La simulación de vehículos ferroviarios es una...

This paper describes a new numerical procedure for the modelling and simulation of the wheel–rail contact in railway dynamic simulations. The method is called knife-edge-equivalent contact constraint method, or simply KEC-method. Using this method, the wheel–rail contact is modelled as rigid or constraint-based using a set of kinematic...

This paper presents a method for the experimental measurement of the lateral wheel-rail contact force based on Artificial Neural Networks (ANN). It is intended to demonstrate how an Artificial Intelligence (AI) method proves to be a valid alternative to other approaches based on sophisticated mathematical models when it is applied to the...

In the field of railroad dynamics, multibody models used for on-board state observation, parameter identification and track geometry measurement must ensure a high computational efficiency, particularly when real-time simulations are required. In this paper, a simplified model based on the assumption of weakly coupled lateral and vertical...

This paper presents the design, construction and experimental validation of a scaled railway vehicle for the automated and quick survey of the geometry of an experimental scaled track. The method, that can be extended to full scale tracks, validates the measurements of the automated recording vehicle (ARV) by comparison with respect to a...

This paper presents a rigid contact approach to analyse the two-point wheel-rail contact scenario using the simplified constraint-based contact method called Knife-edge Equivalent Contact method (KEC-method). The proposed approach makes use of the computationally efficient online solution of the KEC constraints, where a single-point rail is in...

In this paper, a 1 : 10 scaled dynamometric wheelset is presented. It has been equipped with two different technologies: strain gauges and distance lasers. The first one is based on the measurement of the wheel deformation with strain gauges and the second one on the measurement of the wheel web deflection with high precision distance lasers....

The objective of this article is to present the design and manufacture of a scaled railroad track to be used as a laboratory track for the study of different railway applications. It could be a guideline for future laboratory railroad tracks. The ideal concept was based on possible future studies and, according to them, design requirements have...