The mechatronic vehicle developed within the Shift2Rail projects Run2Rail, Pivot, NEXTGEAR, and Pivot2 is evaluated with respect to wheel wear. KTH wear model used determine coefficients of Archard’s map reproduce measured worn profiles present running on Metro Madrid line 10. same then evaluate performance controlled two variants a feedforward controller. first one uses on-board measurements, ...

This paper deals with the lateral force effects of conventional four-axle railway vehicles in conditions S-shape curves, which are represented especially by switches negotiated diverging direction. With use a multi-body model an electric locomotive, sensitivity analysis selected vehicle parameters on maximum guiding S-curve is performed. Subsequently, definition so-called equivalent proposed. s...

This paper presents an active steering system designed to ensure both the curving performance and running stability of a vehicle. Electro-hydraulic actuators installed in place anti-yaw dampers generate yaw moment between carbody bogie. The detects curves with gyroscopes mounted on configuration enables reduction wheel/rail lateral force without requiring complicated mechanical links bogies. al...

This paper analyses the dynamic behavior of a rail vehicle using experimental and simulation analysis on multi-rigid–flex body model. The mathematical models are developed considering car body, bogie frame, wheel axle for vehicles rigid–flexible multi-rigid formulations, taking as rigid flexible flex–rigid analysis. A finite element model was in ANSYS, substructure modal were performed. is vali...

The aim of this work is to develop a model-based methodology for monitoring lateral track irregularities based on the use inertial sensors mounted an in-service train. To end, gyroscope used measure wheelset yaw angular velocity and two accelerometers are acceleration bogie frame. main contribution present development very efficient Kalman-based strategy estimate irregularities. Kalman filter h...

Vibration analysis of bridges induced by train loads is a crucial aspect railway design, particularly considering the complexity vehicle components such as bogie-suspension systems. Consequently, engineers have endeavored to improve computational efficiency and applicability models using finite-element method. This paper introduces toolbox implemented in ABAQUS through user-defined element (UEL...

In this paper existing active and passive radial guiding systems of railway vehicle wheelsets are presented. The new system described in is based on non-direct measuring lateral forces bogie elements. As a part project development there where numerical calculations experiments test stand carried out. main issue, investigated stress signals from extensometers mounted elements wheelsets. conclusi...

Wind tunnel testing is commonly used to assess and optimize the aerodynamic characteristics of high-speed trains. The train model usually mounted above a static ground plane, but moving necessary for correct representation relative motion between ground. This study focuses on effect applied simulation aerodynamics train. tests using stationary were carried out 1:20 scale train’s first car. Nume...

We present a method that uses high-resolution topography data of rough terrain, and ground vehicle simulation, to predict traversability. Traversability is expressed as three independent measures: the ability traverse terrain at target speed, energy consumption, acceleration. The measures are continuous reflect different objectives for planning go beyond binary classification. A deep neural net...