PSI - Issue 20

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2018) 000–000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2018) 000–000

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ScienceDirect

Procedia Structural Integrity 20 (2019) 42–47

1st International Conference on Integrity and Lifetime in Extreme Environment (ILEE-2019) Loading simulation and lifetime evaluation of automatic coupler in extreme environment E.S. Oganyan*, V.S. Kossov, M.N. Ovechnikov, G.M. Volokhov, V.A. Bykov, A.V. Spirov, A.S. Gasyuk 1st International Conference on Integrity and Lifetime in Extreme Environment (ILEE-2019) Loading simulation and lifetime evaluation of automatic coupler in extreme environment E.S. Oganyan*, V.S. Kossov, M.N. Ovechnikov, G.M. Volokhov, V.A. Bykov, A.V. Spirov, A.S. Gasyuk

JSC “Scientific-Research and Design-Technology Institite of Rolling Stock” (JSC “VNIKTI”), 410 Oktyabrskoy Revolutsii str., Kolomna, Moscow region, 140402, Russian Federation JSC “Scientific-Research and Design-Technology Institite f Rolling Stock” (JSC “VNIKTI”), 410 Oktyabrskoy Revolutsii str., Kolomna, Moscow region, 140402, Russian Federation

Abstract Abstract

Data analysis of train haulage in various climatic regions of Russia shows that cases of coupler fractures of cars and locomotives with loss of connection with the train and with occurrence of potentially dangerous situations are not uncommon. This is aggravated by the difficulties of damageability identification of the rolling stock automatic couplers and possibility of their brittle fracture during the winter period of operation at low negative temperatures. This paper describes an approach to assessing the lifetime of automatic coupling units according to the deformation criteria of damageability of metal structures. The proposed approach is based on the combination of software envelopes of modeling of the train haulage longitudinal dynamics and the assessment of the static and dynamic stresses arising in this case in coupling units. The analysis of the coupler lifetime according to the results of these research stages is carried out using methods and programs for assessing fatigue damageability and with determining the period of safe operation. Data analysis of train haulage in various climatic regions of Russia shows that cases f coupler fractur s of cars and l comotives with loss of connection with the train and with occurre ce of p tentially dangerous situations are not uncommon. This is aggravated by the difficulties of amageability identification of the rolling stock automatic couplers d ossibility of their brittl fractur during the winter period of operatio at low negative temperatures. This paper describes an approach to assessing the lifetime of automatic coupling units according to the deformation criteria of damageability of metal structures. The proposed pproach is based on the combination of software e velopes of m deling of the train haulage longitudinal dyna ics and the assessment of the static and dynamic stresses arising in this case in coupling units. The analysis of the coupler lifetime according to the results of these rese rch stages is carried out using methods and programs for assessing fatigue damageability and with determining the period of safe operation.

© 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the ILEE-2019 organizers © 2019 The Author(s). Published by Elsevier B.V. Peer-review under responsibility of the ILEE-2019 organizers © 2019 The Author(s). Published by Elsevier B.V. Peer-review under responsibility of the ILEE-2019 organizers

Keywords: Rolling stock; automatic coupler; strength; damageability; low-cycle and high-cycle fatigue; range of longitudinal forces; lifetime Keywords: Rolling stock; automatic coupler; strength; damageability; low-cycle and high-cycle fatigue; range of longitudinal forces; lifetime

* Corresponding author. Tel.: +7-496-618-82-18; fax: +7-496-618-82-27. E-mail address: vnikti@ptl-kolomna.ru * Corresponding author. Tel.: +7-496-618-82-18; fax: +7-496-618-82-27. E-mail address: vnikti@ptl-kolomna.ru

2452-3216 © 2019 The Author(s). Published by Elsevier B.V. Peer-review under responsibility of the ILEE-2019 organizers 2452 3216 © 2019 Th Author(s). Publis d by lsevier B.V. Peer-review under responsibility of the ILEE-2019 organizers

2452-3216 © 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the ILEE-2019 organizers 10.1016/j.prostr.2019.12.113