PSI - Issue 40

Available online at www.sciencedirect.com Available online at www.sciencedirect.com Sci nceD rect Structural Integrity Procedia 00 (2022) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2022) 000 – 000

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Procedia Structural Integrity 40 (2022) 264–274

15th International Conference on Mechanics, Resource and Diagnostics of Materials and Structures Analytical, experimental, and numerical methods for the analysis of strength and service life of rocket engines 15th International Conference on Mechanics, Resource and Diagnostics of Materials and Stru tures Analytical, experimental, and numerical methods for the analysis of strength and service life of rocket engines

N.A. Makhutov, M.M. Gadenin, D.O. Reznikov*, O.N. Yudina Mechanical Engineering Research Institute, 4 Maly Kharitonievsky lane, Moscow, 101990, Russia N.A. Makhutov, M.M. Gadenin, D.O. Reznikov*, O.N. Yudina Mechanical Engineering Research Institute, 4 Maly Kharitonievsky lane, Moscow, 101990, Russia

© 2022 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 scientific committee of the15th International Conference on Mechanics, Resources and Diagnostics of Materials and Structures. Abstract The paper presents the analysis of strength, service life, and structural integrity of rocket space engines that is based on the combined application of traditional and new experimental, analytical, and numerical methods of calculation, testing, and diagnostics of the state and integrity of their load-bearing components at all stages of the engine life cycle. A computerized data bank on the parameters of the design equations, based on the results of special experiments in laboratory, bench, and field conditions was created. Mathematical and physical modeling was used to conduct refined strength analysis for the most critical components of the rocket engine. The finite element analysis of stress-strain response of the engine critical components to loading regimes was performed. Safety factors for strength, plasticity, and service life of load bearing components were established. © 2022 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 scientific committee of the15th International Conference on Mechanics, Resource and Diagnostics of Materials and Structures. Keywords: Liquid-fuel rocket engine, strength; life-time, tests; modeling, databank; knowledge base 1. Introduction The creation of engines for modern rocket space systems is one of the critical areas of comprehensive basic and applied research carried out in Russia and other countries that develop space systems and technologies (Frolov, Abstract The paper presents the analysis of strength, service life, and structural integrity of rocket space engines that is based on the combined application of trad tional and new exp rim ntal, analy ic , and numerical methods of calculation, te ting, and diagnostics of the state and integrity of their load-b aring componen s t all stages of the engine life cy le. A comput r zed data bank n the paramet rs of th design equati ns, b sed on the r sults of special experiments in laboratory, bench, and field co ditions was created. Mathematical and physical mo eli g was used t conduct r fined strength analysis for the most crit cal mponents of th rocket engine. The finite element analysis of tress-strain respo se of the engine critical co ponents to l ading regimes was performed. Saf ty factors for strength, plasticity, and service life of load b aring components were established. © 2022 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 u der re ponsibility of scientific committe of the15th International C nference on Mechanics, Resource and Diagnostics of Materials and S ructur s. Keywords: Liquid-fuel rocket engine, strength; life-time, tests; modeling, databank; knowledge base 1. Introduction The creation of engines for modern rocket space systems is one of the critical areas of comprehensive basic and applied search carried out in Russia and other coun ries that develop space systems and technologi s (Frolov,

* Corresponding author. Tel.:+7 495 623 5835; fax:+7 495 623 58 35. E-mail address: mibsts@mail.ru * Corresponding author. Tel.:+7 495 623 5835; fax:+7 495 623 58 35. E-mail address: mibsts@mail.ru

2452-3216 © 2022 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 scientific committee of the15th International Conference on Mechanics, Resource and Diagnostics of Materials and Structures. 2452-3216 © 2022 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 u der responsibility of t scientific committe of the15th Int rnational C ference o Mechanics, Resource and Diagnostics of Materials and Structures.

2452-3216 © 2022 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 scientific committee of the15th International Conference on Mechanics, Resources and Diagnostics

of Materials and Structures. 10.1016/j.prostr.2022.04.036