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) 212–217

1st International Conference on Integrity and Lifetime in Extreme Environment (ILEE-2019) Methodological support for the analysis of the stress-strain state of the driver's cab during an emergency collision of a locomotive with an obstacle V.S. Kossov, N.F. Krasyukov, E.S. Oganyan*, M.N. Ovechnikov, G.M. Volokhov JSC “Scientific-Research and Design-Technology Institute of Rolling Stock” (JSC “VNIKTI”), 410 Oktyabrskoy Revolutsii str., Kolomna, 140402, Russia The task of calculation assessment of the structural protection effectiveness (passive safety and impact resistance) of a driver's cab during an emergency collision of a locomotive with an obstacle in the way of movement is considered. Using the example of a 2 ЭС 6 К electric locomotive and a 2 ТЭ 25 К ( М ) diesel locomotive, the technical conditions are formulated on compliance to which such assessment shall be performed. Comparative measures of the effectiveness of individual variants of the structural performance of the impact protection units of the driver's cab are presented. The features of modeling and performing calculation studies of the impact resistance of locomotives (head cars) are considered taking into account the hardening of structural steels and the dependence of their yield strength on the strain rate: an incremental plasticity model based on a bilinear representation of the true stress-true strain behavior taking into account kinematic hardening was used to describe the elastic-plastic behavior of steel. To calculate the stress-strain state of the cab supporting frame and the impact protection unit attached to it, modern computer crash test modeling techniques based on the finite element method and the integration of linearized resolving equations by implicit and explicit methods are used. The construction of the finite element models and calculation studies were carried out using specialized MSC.Mentat/Marc, MSC.Patran/Dytran software systems. The new opportunities that are provided by the developed methods and research are specified in the conclusions. 1st International Conference on Integrity and Lifetime in Extreme Environment (ILEE-2019) Methodological support for the analysis of the stress-strain state of the driver's cab during an emergency collision of a locomotive with an obstacle V.S. Kossov, N.F. Krasyukov, E.S. Oganyan*, M.N. Ovechnikov, G.M. Volokhov JSC “Scientific-Research and Design-Technology Institute of Rolling Stock” (JSC “VNIKTI”), 410 Oktyabrskoy Revolutsii str., Kolomna, 140402, Russia Abstract The task of calculation assessme t of the structural protection effectiveness (passive saf ty and impact resistance) of a driver's cab during an emergency collision of a locomotive with an obstacle in the way of movement is considered. Using the exampl of a 2 ЭС 6 К electric locomotive and a 2 ТЭ 25 К ( М ) diesel locomotive, the technical conditions are formulated on compliance to which such assessment shall be performed. Comparative me sures of the eff ctiveness of in ividual variants of the str ctural performance of the impact protection units of the driver's cab are present . The features of modeling and perf rming calculation studies of the impact resistance of locomotives (head cars) are consid red taking into account the hardeni g of structural steels and the dependence of their yield strength on the strain rate: an increm tal plasticity m del based on a bilinear representati n f the true stress-true strain behavior taking into account kinematic hard ning was used to describe the elastic-plastic behavior of steel. To alculate the stress-strain state of the cab supporting fra and the impact protection unit attached to it, modern computer crash test modeling techniques based on the finite element m thod and the integration of linearize resolving equati ns by implicit nd explicit methods are used. The co struction of the finite element models and calculation studies were carried out using specialized MSC.Mentat/Marc, MSC.Patran/Dytran s ftware systems. The new opportunities that are provided by the developed methods and research are specified in the conclusions. Abstract

© 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: Passive safety; shock resistance; structural protection of a driver's cab; assessment of the structural protection effectiveness. Keywords: Passive safety; shock resistance; structural protection of a driver's cab; assessment of the structural protection effectiveness.

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

2452-3216 © 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the ILEE-2019 organizers 10.1016/j.prostr.2019.12.141