he design and maintenance of turnouts implies considering a great number external factors that have an effect on their structural integrity. The proper generalised decomposition (PGD) method is used in this paper to carry out parametrised study the vehicle-track interaction non-intrusive way. reduced model built using defined domain for some influence parameters: vehicle speed, wheel/rail frict...

ABBREVIATIONS ADB – Asian Development Bank APTA – American Public Transportation Association ASIF – activity–structure–intensity–fuel BMRC – Bangalore Metro Rail Corporation BRT – bus rapid transit CO 2 – carbon dioxide COPERT – Computer Programme to Calculate Emissions from Road Transport DIESEL – Developing Integrated Emissions Strategies for Existing Land Transport DMC – developing member co...

22 23 Implementation of highway-rail grade crossing warning systems, educational programs and 24 research on crossings have all contributed to a steady reduction in the risk to highway users of 25 grade crossings over the past several decades. Much less attention has been given to 26 understanding the effect of grade crossings on train safety and risk. Collisions at highway-rail 27 grade crossi...

In the switch rail section of a high-speed turnout, wheel–rail lateral impact forepart curved is most important factor affecting passing performance. order to reduce and improve safety, complete vehicle–track multi-body dynamics model devised in this paper. The variation relationship when train passes through analyzed. force derailment coefficient are calculated under different parameters, wear...

A numerical model to predict train induced vibrations is presented. The dynamic computation considers mutual interactions in vehicle/track coupled systems by means of a finite and discrete elements method. The rail defects and the case of out-of-round wheels are considered. The dynamic interaction between the wheel-sets and the rail is accomplished by using the non-linear Hertzian model with hy...

This paper presents an overview of manufacturing, static/dynamic test and validation work carried out on composite rail vehicle structures. Two case studies, detailing the development and experimental validation of a composite bodied people mover and a foam core composite roof for a regional train are presented, demonstrating new and novel applications of composite materials within the rail ind...

non-linear characteristic of tire forces is the main cause of vehicle lateral dynamics instability, while direct yaw moment control is an effective method to recover the vehicle stability. in this paper, an optimal linear quadratic regulator (lqr) controller for roll-yaw dynamics to articulated heavy vehicles is developed. for this purpose, the equations of motion obtained by the matlab softwar...

This review addresses efforts made within the field of vehicle dynamics to contribute energy efficient operation road and rail vehicles. Selected investigations research community develop technology solutions reduce consumption are presented. The study explores impact potential relatively mature technologies such as regenerative braking, but also recent directions that seeking suspensions, a co...

this paper focuses on the optimization of initiating dimensions of groove bearing in association with de- sired design of vehicle’s front structure which is made up of low carbon steels in the case of frontal collision. axial bearing analysis is done numerically using nonlinear finite element code ls-dyna. in this analysis, changes of two main parameters including measure of energy absorption o...