Premium
Plastification and Damage in Wheel‐Rail Rolling Contact – Case Study on a Crossing
Author(s) -
Wiest Martina,
Daves Werner,
Fischer Franz Dieter,
Ossberger Heinz
Publication year - 2005
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.200510018
Subject(s) - axle , finite element method , structural engineering , process (computing) , materials science , contact force , mechanics , engineering , computer science , physics , classical mechanics , operating system
Abstract A fully three‐dimensional, dynamic model for a wheel running over a crossing is developed using an explicit finite element program. The full mass of the wheel and the crossing and elastic‐plastic material behaviour are considered. The damage in the contact area is investigated with a very dense mesh taken from the dynamic model using a submodelling technique. With this kind of calculations the stresses and strains produced in the wheel and the crossing during the cross‐over process can be determined, as well as the respective reaction forces in the bedding and the axle. Calculations for different crossing‐geometries are performed. Finally a damage indicator is introduced to identify the probable location of crack initiation. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)