Effect of Microstructure on Micro-Mechanical Properties of Composite Solid Propellant

This study was aimed at determining the effect of microstructure on the macro-mechanical behavior of a composite solid propellant. The microstructure model of a composite solid propellant was generated using molecular dynamics algorithm. The correlation of how microstructural mechanical properties a...

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Autores principales:	Tianpeng Li, Jinsheng Xu, Junli Han, Yong He
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	composite solid propellant microstructure model numerical simulation mechanical property Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/aaccb1155d3b4943bf4871ad2c65cf8c
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id	oai:doaj.org-article:aaccb1155d3b4943bf4871ad2c65cf8c
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spelling	oai:doaj.org-article:aaccb1155d3b4943bf4871ad2c65cf8c2021-11-25T18:23:31ZEffect of Microstructure on Micro-Mechanical Properties of Composite Solid Propellant10.3390/mi121113782072-666Xhttps://doaj.org/article/aaccb1155d3b4943bf4871ad2c65cf8c2021-11-01T00:00:00Zhttps://www.mdpi.com/2072-666X/12/11/1378https://doaj.org/toc/2072-666XThis study was aimed at determining the effect of microstructure on the macro-mechanical behavior of a composite solid propellant. The microstructure model of a composite solid propellant was generated using molecular dynamics algorithm. The correlation of how microstructural mechanical properties and the effect of initial interface defects in propellant act on the macro-mechanics were studied. Results of this study showed that the mechanical properties of propellant rely heavily on its mesoscopic structure. The grain filling volume fraction mainly influences the propellant initial modulus, the higher the volume fraction, the higher initial modulus. Additionally, it was found that the ratio of particles influences the tensile strength and breaking elongation rate of the propellant. The big particles could also improve the initial modulus of a propellant, but decrease its tensile strength and breaking elongation rate. Furthermore, the initial defects lowered the uniaxial tensile modulus, tensile strength, and the relaxation modulus of propellant, but did not affect the relaxation behavior of the propellant.Tianpeng LiJinsheng XuJunli HanYong HeMDPI AGarticlecomposite solid propellantmicrostructure modelnumerical simulationmechanical propertyMechanical engineering and machineryTJ1-1570ENMicromachines, Vol 12, Iss 1378, p 1378 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	composite solid propellant microstructure model numerical simulation mechanical property Mechanical engineering and machinery TJ1-1570
spellingShingle	composite solid propellant microstructure model numerical simulation mechanical property Mechanical engineering and machinery TJ1-1570 Tianpeng Li Jinsheng Xu Junli Han Yong He Effect of Microstructure on Micro-Mechanical Properties of Composite Solid Propellant
description	This study was aimed at determining the effect of microstructure on the macro-mechanical behavior of a composite solid propellant. The microstructure model of a composite solid propellant was generated using molecular dynamics algorithm. The correlation of how microstructural mechanical properties and the effect of initial interface defects in propellant act on the macro-mechanics were studied. Results of this study showed that the mechanical properties of propellant rely heavily on its mesoscopic structure. The grain filling volume fraction mainly influences the propellant initial modulus, the higher the volume fraction, the higher initial modulus. Additionally, it was found that the ratio of particles influences the tensile strength and breaking elongation rate of the propellant. The big particles could also improve the initial modulus of a propellant, but decrease its tensile strength and breaking elongation rate. Furthermore, the initial defects lowered the uniaxial tensile modulus, tensile strength, and the relaxation modulus of propellant, but did not affect the relaxation behavior of the propellant.
format	article
author	Tianpeng Li Jinsheng Xu Junli Han Yong He
author_facet	Tianpeng Li Jinsheng Xu Junli Han Yong He
author_sort	Tianpeng Li
title	Effect of Microstructure on Micro-Mechanical Properties of Composite Solid Propellant
title_short	Effect of Microstructure on Micro-Mechanical Properties of Composite Solid Propellant
title_full	Effect of Microstructure on Micro-Mechanical Properties of Composite Solid Propellant
title_fullStr	Effect of Microstructure on Micro-Mechanical Properties of Composite Solid Propellant
title_full_unstemmed	Effect of Microstructure on Micro-Mechanical Properties of Composite Solid Propellant
title_sort	effect of microstructure on micro-mechanical properties of composite solid propellant
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/aaccb1155d3b4943bf4871ad2c65cf8c
work_keys_str_mv	AT tianpengli effectofmicrostructureonmicromechanicalpropertiesofcompositesolidpropellant AT jinshengxu effectofmicrostructureonmicromechanicalpropertiesofcompositesolidpropellant AT junlihan effectofmicrostructureonmicromechanicalpropertiesofcompositesolidpropellant AT yonghe effectofmicrostructureonmicromechanicalpropertiesofcompositesolidpropellant
_version_	1718411216000385024

Effect of Microstructure on Micro-Mechanical Properties of Composite Solid Propellant

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