Dresden 2014 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 13: Poster - Glasses / Stat. Phys. Bio. / Networks (joint session DY/BP/CPP/SOE)

DY 13.3: Poster

Dienstag, 1. April 2014, 09:30–12:30, P1

Railway buckling safety: From Theory to application — •János Török¹, László Halma², and István Fejér² — ¹Department of Theoretical Physics,Budapest University of Technology and Economics, H-1111 Budapest, Hungary — ²Vasútépítök Kft, H-9023 Györ, Csaba utca 9

Using numerical simulation and mesoscopic theory we show that in granular materials the effective friction coefficient at walls depends heavily on the wall roughness. We show that it can be used in real application. In continuous welded rails the standard railbed in small radius curves are not able to resist the radial load arising from temperature and train movement. Today many different and expensive methods are used to tackle this problem. We show that by making the bottom of the sleepers rough we can increase the buckling safety of the track.