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SOE: Fachverband Physik sozio-ökonomischer Systeme
SOE 9: Poster - Glasses / Stat. Phys. Bio. / Networks (joint session DY/BP/CPP/SOE)
SOE 9.3: Poster
Tuesday, April 1, 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.