A Co-simulation Solution for Vehicle-Track Interaction Dynamics Problems

A co-simulation solution based on direct equilibrium of contact forces is proposed to simulate vehicle-track interaction (VTI) dynamics. It is developed in two platforms, which presents an iterative feedback loop that exchanges contact force files and structure response field in real-time. The load vector acting on the structure is described by...

Railway ballast

Railway ballast is normally made of crushed rocks with grading (particle size distributions). Ballast is inevitably suffering from more rapid degradation. Because ballast keeps undergoing and dissipating most of the train loadings, furthermore, the train speed and freight weight are increasing, causing more intensive loadings to ballast. To...

Wheel-rail dynamic interaction

A better understanding of wheel-rail dynamic interaction is necessary for the capacity increase of railway transportation. This chapter briefly introduces the consequences, modeling and detection methods of wheel-rail dynamic interaction, and maintenance of the weak track spots where wheel-rail dynamic interaction often occurs. Wheel-rail...

The Transforming Dutch City seen through the Infrastructural Changes: Railways and the Case of Amsterdam

The relation between infrastructures and urban transformations is a complex matter. When we look at the Randstad, this part of the Netherlands is characterized by not only its urban development in the last 150 years, but also by the fact that the territory changed; herein geomorphology, waterways, and railroads play an important role. Since the...