Methods for multibody modelling and simulation should accurately replicate the dynamic behaviour of rail-wheel interface including precise values for wheel-rail contact positions. This paper studies the development of a novel 3-D wheel-rail contact model which is used for dynamic simulation of a suspended wheelset with parameters listed for a typical Mark IV coach. The contact point locations o...

Conicity is an important characteristic that helps the railway vehicle to steer itself down track. However during operation, conicity tends change inconsistently due frictional contact at wheel-rail interface. Safety, reliability and ride comfort which are utmost importance for journey adversely affected changes in level beyond certain limit. Several techniques have been employed monitoring hea...

This paper presents an active steering control strategy that improves the performance of rail vehicles on track curves. The control scheme is developed to explore the usually symmetrical arrangement of bogie suspensions such that only simple and practical sensors are needed. The vehicle configuration and requirements of wheelset steering on curves are explained, before the detailed control desi...

The study aims to develop a measuring circuit determine the loads acting on side frame of bogie from wheelset when wagon is moving. paper reviews and analyzes experimental methods for vertical lateral forces Theoretical studies stress-strain state freight were carried out using finite element method under action axle opening wheelset. As result theoretical by method, places installation strain ...

Hunting; Rail wheelset; Hopf bifurcation; Discontinuous nonlinearity; Routh–Hurwitz criterion; Equivalent function; Analytical approach. Abstract This paper presents an investigation on bifurcation of railway bogie behavior in the presence of nonlinearities which are yaw damping forces in longitudinal suspension system and the friction creepage model of thewheel/rail contact including clearance...

A novel control scheme for the active steering of railway vehicles is presented in the paper using disturbance observer based control (DOBC) techniques. In contrast to existing DOBC schemes which are mainly for singleinput-single-output (SISO) systems and designed by trial and error, a new DOBC technique for multi-input-multi-output (MIMO) systems is developed. This is achieved by reforming the...

A combination of instrumented wheelset measurements and numerical simulations axle bending stresses is used to investigate the consequences evolving rolling contact fatigue (RCF) damage on a passenger train wheelset. In field test campaign, have been monitored using with four strain gauges mounted axle, while evolution wheel tread (out-of-roundness) has measured regular occasions. The signals a...

The complexity of railway vehicle structures has been part an evolutionary process for almost two hundred years. Challenges such as increased weight, maintenance, higher costs and energy consumption have become common. vision future vehicles is to reduce complexity, hence enable simpler maintenance cost, course various research challenges arise from this. In fact, a number papers in the enginee...