Metro vehicles have always been known for their high passenger density, frequent traffic flow and strong alternating loads due to severe running environment. As the major support component, bogie frame suffers from fatigue damages receives a intensity of interest. In this work, theoretical model is presented between measured strain structural stress via multiple load identification, wherein rec...

Increased railway patronage worldwide is putting pressure on rolling stock and infrastructure to operate at higher capacity and with improved punctuality. Condition monitoring is seen as a contributing factor in enabling this and is highlighted here in the context of rolling stock being procured with high capacity data buses, multiple sensors and centralised control. This therefore leaves scope...

In this paper we describe the steering, suspension and control systems of the rover Zoë, a solar-powered robot designed to explore the Mars-like landscapes of the Atacama Desert in Chile. We are developing the Zoë chassis as an alternative to the traditional six-wheeled, rocker-bogie system used by Mars rovers flown in the past ten years. Zoë travels over rough terrain using only four independe...

This paper details a range of work carried out by the authors within the general theme of advanced condition monitoring possibilities for rail vehicle bogies. Maintenance of rail vehicle bogies represents one of the largest areas of whole vehicle running costs and their efficient operation is of safety critical importance to the entire rail system. Currently the majority of maintenance is carri...

Article presents the possibility of using computer modelling and simulation methods for assessing the risk and stability of production systems. Analysis of the stability depending on the occurrence of risk factors was presented through the example of a bogie frames manufacturing plant undergoing reorganization. In order to ensure smooth functioning of a production system, the stability of its p...

Fuel consumption is one of the key parameters in mechanised forest operations, particularly on lower bearing capacity soils, as wheel chains or bogie tracks can have a strong effect it. This study aims to analyse fuel several individual wheeled cut-to-length forwarder set-ups with different types peatland using automatic recording data bus information. Two forwarders, 8-wheeled and 10-wheeled, ...

Abstract The hunting phenomenon is an intrinsic swaying motion appearing in railway vehicles due to the vehicle’s forward speed and wheel–rail contact forces. Hunting consists of wheelset other components oscillations that arise above a certain known as critical or speed. These are unstable nature represent safety hazard they could lead derailment. This article analyses stability bogie nonlinea...

Brazilian railroads are continuously looking to increase their asset performance. In this sense, wheel/rail interface studies have been conducted, which allowed benefits that were not previously considered. Improved contact can significantly reduce maintenance costs, energy efficiency, and operational safety. For rolling stock, wheel consumption usually has the highest cost is among total costs...

Crawler travel gear is a type of heavy vehicle propulsion that commonly found in tanks, excavators, and specialized off-road vehicles. They have an advantage over wheels when it comes to robust weight distribution soft terrain, some disadvantages as well. can damage paved roads complex design so, considering the enormous they must carry, their reliability be determined verified. The main parts ...