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Reduced-order modeling of train-curved-slab-track dynamics with the effects of fastening failures
State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, China.
KTH, School of Engineering Sciences (SCI), Engineering Mechanics, Vehicle Engineering and Solid Mechanics, Väg- och spårfordon samt konceptuell fordonsdesign. KTH, School of Engineering Sciences (SCI), Centres, The KTH Railway Group.ORCID iD: 0000-0001-7393-569X
State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, China.
State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, China.
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2022 (English)In: Acta Mechanica Sinica, ISSN 0567-7718, E-ISSN 0459-1879, Vol. 38, article id 522039Article in journal (Refereed) Published
Abstract [en]

Fastening failures have frequently been found on China high-speed railway curved tracks in recent years. Thus the influence of fastening failures on high-speed train-track interaction in curved track needs to be analyzed. A train-curved slab track interaction model is built, in which the real shape of the curved rail is considered and modeled with reduced beam model (RBM) and curved beam theory, and the slabs are modeled with four-nodes Kirchhoff-Love plate elements. The present model is validated at first with different traditional models. Then the influence of fastening failure in curved slab track on train-track interaction dynamics is studied. A different number of failed fastenings is assumed to occur at the curved track, and different types of fastening failure including the fatigue fracture of the clip structure and failure of the rail pad are considered. Based on the calculation results, the fatigue fracture of the clip structure has little influence on train-track interaction dynamics. But when rail pad failure happens and its equivalent vertical stiffness and damping are less than one-tenth of its original, the fastening failure seriously affects the high-speed train operation safety, and it must be prevented

Place, publisher, year, edition, pages
Springer Nature, 2022. Vol. 38, article id 522039
Keywords [en]
Fastening failure, Train-track interaction, Reduced beam model, Curved track, Train operational safety
National Category
Vehicle Engineering
Identifiers
URN: urn:nbn:se:kth:diva-314990DOI: 10.1007/s10409-022-22039-xISI: 000827729600001Scopus ID: 2-s2.0-85134408946OAI: oai:DiVA.org:kth-314990DiVA, id: diva2:1677456
Note

QC 20220628

Available from: 2022-06-27 Created: 2022-06-27 Last updated: 2022-09-23Bibliographically approved

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fulltext(19850 kB)135 downloads
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Liu, ZhendongStichel, Sebastian

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Väg- och spårfordon samt konceptuell fordonsdesignThe KTH Railway Group
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