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Thermostructural Numerical Analysis of the Thrust Chamber of a Liquid Propellant Rocket Engine

The numerical simulation of rocket engine thrust chambers is very challenging as several damaging phenomena, such as plasticity, low-cycle-fatigue (LCF) and creep occur during its service life. The possibility of simulating the thermostructural behavior of the engine, by means of non-linear finite e...

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Autores principales: Citarella, Roberto, Ferraiuolo, Michele, Perrella, Michele, Giannella, Venanzio
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9370048/
https://www.ncbi.nlm.nih.gov/pubmed/35955363
http://dx.doi.org/10.3390/ma15155427
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author Citarella, Roberto
Ferraiuolo, Michele
Perrella, Michele
Giannella, Venanzio
author_facet Citarella, Roberto
Ferraiuolo, Michele
Perrella, Michele
Giannella, Venanzio
author_sort Citarella, Roberto
collection PubMed
description The numerical simulation of rocket engine thrust chambers is very challenging as several damaging phenomena, such as plasticity, low-cycle-fatigue (LCF) and creep occur during its service life. The possibility of simulating the thermostructural behavior of the engine, by means of non-linear finite element analyses, allows the engineers to guarantee the structural safety of the structure. This document reports the numerical simulations developed with the aim of predicting the thermostructural behaviour and the service life of the thrust chamber of a liquid-propellant rocket engine. The work represents a step ahead of previous researches by the authors, with particular reference to the addition of the Smith-Watson-Topper (SWT) fatigue criterion, and to the implementation of a sub-modelling technique, for a more accurate assessment of the most critical section of the component. It was found that the equivalent plastic strains in the most critical nodes obtained through the sub-modelling technique were about 20% lower than those calculated without sub-modelling. Consistently with experimental tests from literature conducted on similar geometries, the most critical areas resulted to be on the internal surface of the chamber. The analyses demonstrated that the LCF damaging contribution was significant, with a life prediction for the thrust chamber of about 3400 cycles.
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spelling pubmed-93700482022-08-12 Thermostructural Numerical Analysis of the Thrust Chamber of a Liquid Propellant Rocket Engine Citarella, Roberto Ferraiuolo, Michele Perrella, Michele Giannella, Venanzio Materials (Basel) Article The numerical simulation of rocket engine thrust chambers is very challenging as several damaging phenomena, such as plasticity, low-cycle-fatigue (LCF) and creep occur during its service life. The possibility of simulating the thermostructural behavior of the engine, by means of non-linear finite element analyses, allows the engineers to guarantee the structural safety of the structure. This document reports the numerical simulations developed with the aim of predicting the thermostructural behaviour and the service life of the thrust chamber of a liquid-propellant rocket engine. The work represents a step ahead of previous researches by the authors, with particular reference to the addition of the Smith-Watson-Topper (SWT) fatigue criterion, and to the implementation of a sub-modelling technique, for a more accurate assessment of the most critical section of the component. It was found that the equivalent plastic strains in the most critical nodes obtained through the sub-modelling technique were about 20% lower than those calculated without sub-modelling. Consistently with experimental tests from literature conducted on similar geometries, the most critical areas resulted to be on the internal surface of the chamber. The analyses demonstrated that the LCF damaging contribution was significant, with a life prediction for the thrust chamber of about 3400 cycles. MDPI 2022-08-07 /pmc/articles/PMC9370048/ /pubmed/35955363 http://dx.doi.org/10.3390/ma15155427 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Citarella, Roberto
Ferraiuolo, Michele
Perrella, Michele
Giannella, Venanzio
Thermostructural Numerical Analysis of the Thrust Chamber of a Liquid Propellant Rocket Engine
title Thermostructural Numerical Analysis of the Thrust Chamber of a Liquid Propellant Rocket Engine
title_full Thermostructural Numerical Analysis of the Thrust Chamber of a Liquid Propellant Rocket Engine
title_fullStr Thermostructural Numerical Analysis of the Thrust Chamber of a Liquid Propellant Rocket Engine
title_full_unstemmed Thermostructural Numerical Analysis of the Thrust Chamber of a Liquid Propellant Rocket Engine
title_short Thermostructural Numerical Analysis of the Thrust Chamber of a Liquid Propellant Rocket Engine
title_sort thermostructural numerical analysis of the thrust chamber of a liquid propellant rocket engine
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9370048/
https://www.ncbi.nlm.nih.gov/pubmed/35955363
http://dx.doi.org/10.3390/ma15155427
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