PSI - Issue 28

Available online at www.sciencedirect.com Structural Integrity Procedia 00 (2019) 000–000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2019) 000–000 Available online at www.sciencedirect.com ScienceDirect

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Procedia Structural Integrity 28 (2020) 804–810

© 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the European Structural Integrity Society (ESIS) ExCo © 2020 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the European Structural Integrity Society (ESIS) ExCo Keywords: Structural composites, failure criterion, damage parameter, impact loading, crashworthiness Abstract This paper proposes an appro ch for t e modeling of crushing behavior of absorbing structural components, made of fib r-reinforced c mposite material. The effect of stra ate dependency of mate ial properties is in the focus of th research, thus proposed material model is based on introduction of damage parameters, and high rate behavior is expressed in terms of damage rate. Stress-strain resp nse of ty ical carbon fiber-reinforced composite to a wide range of imp ct loading rates provides data for cal bration of the prop sed model. Abaqus explicit solv r with implemented user material model is us d for direct 3D finite el ment simulation of impact with tubular specimen. Impact initiation process is considered i det il to explain initial eak appearance on load di gram not only caused by the tube chamfer failure with conseque t transfer f crushing process to a regular tubular zone, but lso as effec of train-rate dependency. Simulation shows a good agreement with typical load-displacement curves and crashworthiness values. © 2020 The Authors. Published by ELSEVIER B.V. This is an ope acces article under CC BY-NC-ND license (ht ps:// r ativecommons. rg/licenses/by-nc-nd/4.0) P er-review nder respon ibility of the European Structural Integrity S ciety (ESIS) ExCo Keywords: Structural composites, failure criterion, damage parameter, impact loading, crashworthiness 1st Virtual European Conference on Fracture High rate damage of composite material for modelling of energy absorbing structures Alexey N. Fedorenko a *, Boris N. Fedulov a,b , Evgeny V. Lomakin b a Center for Design, Manufacturing and Materials, Skolkovo Institute of Science and Technology, 143025, Moscow, Russia b Lomonosov Moscow State University, 119991, Moscow, Russia Abstract This paper proposes an approach for the modeling of crushing behavior of absorbing structural components, made of fiber-reinforced composite material. The effect of strain rate dependency of material properties is in the focus of this research, thus proposed material model is based on introduction of damage parameters, and high rate behavior is expressed in terms of damage rate. Stress-strain response of typical carbon fiber-reinforced composite to a wide range of impact loading rates provides data for calibration of the proposed model. Abaqus explicit solver with implemented user material model is used for direct 3D finite element simulation of impact with tubular specimen. Impact initiation process is considered in details to explain initial peak appearance on load diagram not only caused by the tube chamfer failure with consequent transfer of crushing process to a regular tubular zone, but also as effect of strain-rate dependency. Simulation shows a good agreement with typical load-displacement curves and crashworthiness values. 1st Virtual European Conference on Fracture High rate damage of composite material for modelling of energy absorbing structures Alexey N. Fedorenko a *, Boris N. Fedulov a,b , Evgeny V. Lomakin b a Center for Design, Manufacturing and Materials, Skolkovo Institute of Science and Technology, 143025, Moscow, Russia b Lomonosov Moscow State University, 119991, Moscow, Russia

* Corresponding author. E-mail address: a.fedorenko@skoltech.ru * Corresponding author. E-mail address: a.fedorenko@skoltech.ru

2452-3216 © 2020 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the European Structural Integrity Society (ESIS) ExCo 2452-3216 © 2020 The Authors. Published by ELSEVIER B.V. This is an ope access article under t CC BY-NC-ND license (https:// r ativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the European Structural Integrity Society (ESIS) ExCo

2452-3216 © 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the European Structural Integrity Society (ESIS) ExCo 10.1016/j.prostr.2020.10.094