Print Email Facebook Twitter Rail surface crack initiation analysis using multi-scale coupling approach Title Rail surface crack initiation analysis using multi-scale coupling approach Author Ma, Y. Markine, V.L. Mashal, A. Faculty Civil Engineering and Geosciences Department Structural Engineering Date 2015-08-17 Abstract A concurrent multi-scale computational strategy for rail surface crack initiation analysis is introduced in current paper. It attempts to take advantage of the efficiency of macroscopic models and the accuracy of the mesoscopic models. The solving procedure is, through the coupling of individual approaches, beginning from the largest scale to the smaller scale, making use of multi-body dynamic(MBS) simulation, explicit finite element(FEM) analysis, sub-modelling technique as well as crack initiation analysis. The main idea of the seamless handshaking algorithms at the interface of the respective approaches is presented. A unified description of crack initiation analysis is built up by linking the models at different scales. Moreover, the surface and sub-surface stress/strain distributions under the wheel-rail rolling contact loads are obtained from coupled simulations. Based on the stress/strain response, the critical plane orientation of surface crack initiation is predicted. It can be concluded that the proposed numerical procedure can provide much accurate and realistic outcomes for rail surface crack initiation analysis in comparison with performing an simulation only on one scale level. To reference this document use: http://resolver.tudelft.nl/uuid:a4845b8b-16c4-4928-b9bf-d7a14fbf42e3 Source IAVSD 2015: 24th International Symposium on Dynamics of Vehicles on Roads and Tracks, Graz, Austria, 17-21 August 2015 Part of collection Institutional Repository Document type conference paper Rights (c) 2015 The Author(s) Files PDF 324665.pdf 2.02 MB Close viewer /islandora/object/uuid:a4845b8b-16c4-4928-b9bf-d7a14fbf42e3/datastream/OBJ/view