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E. Vollebregt, "Detailed Contact Geometry Processing for 3D Wheel and Rail Surfaces", in J. Pombo, (Editor), "Proceedings of the Sixth International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 7, Paper 2.10, 2024, doi:10.4203/ccc.7.2.10

Keywords: wheel-rail contact, vehicle-track interaction, multi-body simulation, contact geometry, contact detection, wheel flat.

Abstract

The CONTACT software is extended to incorporate the full 3D shape of rails and wheels in the simulation of vehicle-track interaction, covering on the one hand rails with longitudinal profile variation (switches and crossings, turnouts), and on the other hand localized defects like wheel flats and squats. The new version of CONTACT is embedded in SIMPACK Rail using on-line integration, replacing the original methods used for the wheel-rail contact force calculation. A measured wheel flat is taken as an example, computing the impact forces for a range of circumstances. Whereas previous works typically applied a radius variation across the whole width of the wheel, the full 3D shape of the flat is included here accounting for the actual flat depth at the lateral positions on the wheel where contact occurs. The detailed stress histories computed may be used to study the evolution of the wheel flat in time.

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Front Page Browse CCC CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Conferences ISSN 2753-3239 CCC: 7 PROCEEDINGS OF THE SIXTH INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 2.10 Detailed Contact Geometry Processing for 3D Wheel and Rail Surfaces E. Vollebregt Vtech CMCC, Rotterdam, The Netherlands doi:10.4203/ccc.7.2.10 Full Bibliographic Reference for this paper E. Vollebregt, "Detailed Contact Geometry Processing for 3D Wheel and Rail Surfaces", in J. Pombo, (Editor), "Proceedings of the Sixth International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 7, Paper 2.10, 2024, doi:10.4203/ccc.7.2.10 Keywords: wheel-rail contact, vehicle-track interaction, multi-body simulation, contact geometry, contact detection, wheel flat. Abstract The CONTACT software is extended to incorporate the full 3D shape of rails and wheels in the simulation of vehicle-track interaction, covering on the one hand rails with longitudinal profile variation (switches and crossings, turnouts), and on the other hand localized defects like wheel flats and squats. The new version of CONTACT is embedded in SIMPACK Rail using on-line integration, replacing the original methods used for the wheel-rail contact force calculation. A measured wheel flat is taken as an example, computing the impact forces for a range of circumstances. Whereas previous works typically applied a radius variation across the whole width of the wheel, the full 3D shape of the flat is included here accounting for the actual flat depth at the lateral positions on the wheel where contact occurs. The detailed stress histories computed may be used to study the evolution of the wheel flat in time. download the full-text of this paper (PDF, 2792 Kb) go to the previous paper go to the next paper return to the table of contents return to the volume description
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