Home  About Journal  Editorial Board  Instruction  Subscription  Contact Us   Message Board  
JMT 2016, Vol. 24 Issue (1) :38-47    DOI: 10.1007/s40534-015-0093-z
Articles Current Issue | Next Issue | Archive | Adv Search << Previous Articles | Next Articles >>
Derailment risk and dynamics of railway vehicles in curved tracks: Analysis of the effect of failed fasteners
Silvia Morales-Ivorra, Julia Irene Real, César Hernández, Laura Montalbán*
University Institute for Multidisciplinary Mathematics, Polytechnic University of Valencia, 46022 Valencia, Spain

Abstract
Reference
Related Articles
Download: PDF (1761KB)   HTML 1KB   Export: BibTeX or EndNote (RIS)      Supporting Info
Abstract The effect of the fastener's failure in a railway track on the dynamic forces produced in the wheel-rail contact is studied using the simulation software VAMPIRE to assess the derailment risk of two different vehicles in two curves with distinct characteristics. First, a 3D-FEM model of a real track is constructed, paying special attention to fasteners, and calibrated with displacement data obtained experimentally during a train passage. This numerical model is subsequently used to determine the track vertical and lateral stiffness. This study evidences that although the track can practically lose its lateral stiffness as a consequence of the failure of 7 consecutive fasteners, the vehicle stability would not be necessarily compromised in the flawed zone. Moreover, the results reveal that the uncompensated acceleration and the distance along which the fasteners are failed play an important role in the dynamic behavior of the vehicle-track system, influencing strongly the risk of derailment.
Service
Email this article
Add to my bookshelf
Add to citation manager
Email Alert
RSS
Articles by authors
KeywordsRailway dynamics   Fasteners   Derailment   Curved track     
Received 2015-03-31; published 2016-01-30
Corresponding Authors: Silvia Morales-Ivorra     Email: silmoiv@cam.upv.es
Cite this article:   
Silvia Morales-Ivorra, Julia Irene Real, César Hernández, Laura Montalbán.Derailment risk and dynamics of railway vehicles in curved tracks: Analysis of the effect of failed fasteners[J]  JMT, 2016,V24(1): 38-47
URL:  
http://jmt.swjtu.edu.cn/EN/10.1007/s40534-015-0093-z      or     http://jmt.swjtu.edu.cn/EN/Y2016/V24/I1/38
Copyright 2010 by JMT