There are numerous non-smooth factors in railway vehicle systems, such as flange impact, dry friction, creep force, and so on. Such heavily affect the dynamical behavior of systems. In this paper, we investigate mathematically analyze double grazing bifurcations wheelset systems with contact. Two types models impact considered, one is a rigid model other soft model. First, derive Poincaré maps ...

The wheel-rail interface is regarded as the most important factor for dynamic behaviour of a railway vehicle, affecting safety service, passenger comfort, and life wheelset asset. degradation wheels in contact with rail visibly manifest on their treads form defects such indentations, flats, cavities, etc. To guarantee reliable service maximise availability rolling-stock assets, these need to be...

Recently, derailments have been occurring frequently at the guardrail position of double-slip turnouts. In order to provide a theoretical basis for effectively avoiding derailment turnouts, this study presented mechanism, discussed rationality current interval limit and its calculation method, proposed method calculating based on vehicle running attitude wheelset angle attack. Based established...

Railway wheelsets are the key to ensuring safe operation of trains. To achieve zero-defect production, railway equipment manufacturers must strictly control every link in wheelset production process. The press-fit curve output by assembly machine is an essential indicator wheelset’s quality. operators will still need manually and individually recheck curves our practical case. However, there ma...