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DEVELOPING MULTISCALE COMPUTATIONAL METHODS TO PREDICT RCF CRACK INITIATION IN RAILS USING CRITICAL PLANE FATIGUE DAMAGE PARAMETERS
KTH, School of Engineering Sciences (SCI), Engineering Mechanics, Vehicle Engineering and Solid Mechanics.
KTH, School of Engineering Sciences (SCI), Engineering Mechanics, Vehicle Engineering and Solid Mechanics.ORCID iD: 0000-0002-6346-6620
KTH, School of Engineering Sciences (SCI), Engineering Mechanics, Vehicle Engineering and Solid Mechanics.ORCID iD: 0000-0003-1583-4625
KTH, School of Engineering Sciences (SCI), Engineering Mechanics, Vehicle Engineering and Solid Mechanics, Solid Mechanics.ORCID iD: 0000-0001-8068-2360
Number of Authors: 42022 (English)In: CM 2022: 12th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems, Conference Proceedings, International Conference on Contact Mechanics of Wheel / Rail Systems , 2022, p. 410-419Conference paper, Published paper (Refereed)
Abstract [en]

A new multiscale computational method predicts RCF crack formation in rails by integrating multi-body simulations, finite-element methods, and critical plane approaches. Multi-variable modal value sampling is introduced to reduce the computational expense of large-scale FE studies by capturing multiple wheel passes in a single loading profile. The Smith-Watson-Topper (SWT) critical plane fatigue damage parameter is selected to capture the non-proportional multiaxial load history drivers for RCF formation. The critical plane fatigue damage parameter matches the experimentally observed location and orientation of RCF cracks, highlighting the applicability of this new method for future RCF assessments.

Place, publisher, year, edition, pages
International Conference on Contact Mechanics of Wheel / Rail Systems , 2022. p. 410-419
Keywords [en]
Contact Mechanics, Critical Plane Method, Damage parameters, Fatigue Crack Initiation, Rolling Contact Fatigue
National Category
Vehicle Engineering Applied Mechanics
Identifiers
URN: urn:nbn:se:kth:diva-333399Scopus ID: 2-s2.0-85149172900OAI: oai:DiVA.org:kth-333399DiVA, id: diva2:1785109
Conference
12th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems, CM 2022, Melbourne, Australia, Sep 4 2022 - Sep 7 2022
Note

Part of ISBN 9780646865881

QC 20230801

Available from: 2023-08-01 Created: 2023-08-01 Last updated: 2023-08-01Bibliographically approved

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Leung, Jonathan F.W.Hossein Nia, SaeedCasanueva Perez, CarlosOlsson, Mårten

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