Three-Dimensional Surface Crack Growth of Maraging Steel Spherical Pressure Shell

This study focused on the three-dimensional surface crack growth of a spherical pressure shell. Eight maraging steel 18Ni (250) samples were fabricated and tested, and the fatigue crack growth rate curves were obtained. Considering the influence of plastic closure effect and sample thickness on crac...

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Autores principales:	Yongmei Zhu, Rujun Li, Jiahao Yang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	spherical pressure shell maraging steel three-dimensional crack propagation simulation fatigue life Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581
Acceso en línea:	https://doaj.org/article/c32094abffa544588de8d58ab0c7f99a
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id	oai:doaj.org-article:c32094abffa544588de8d58ab0c7f99a
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spelling	oai:doaj.org-article:c32094abffa544588de8d58ab0c7f99a2021-11-25T18:05:02ZThree-Dimensional Surface Crack Growth of Maraging Steel Spherical Pressure Shell10.3390/jmse91112802077-1312https://doaj.org/article/c32094abffa544588de8d58ab0c7f99a2021-11-01T00:00:00Zhttps://www.mdpi.com/2077-1312/9/11/1280https://doaj.org/toc/2077-1312This study focused on the three-dimensional surface crack growth of a spherical pressure shell. Eight maraging steel 18Ni (250) samples were fabricated and tested, and the fatigue crack growth rate curves were obtained. Considering the influence of plastic closure effect and sample thickness on crack growth, the fitting formula of fatigue crack growth only related to materials was obtained. Based on the three-dimensional crack closure theory and the strip yield model, a three-dimensional surface crack growth model of spherical pressure shell was established. By using a self-written program and FRANC3D, the three-dimensional surface crack growth simulations of the spherical shell were completed. The influence of the initial shape ratio and initial depth of the crack on the crack growth and the fatigue life of the spherical shell was analyzed.Yongmei ZhuRujun LiJiahao YangMDPI AGarticlespherical pressure shellmaraging steelthree-dimensional crackpropagation simulationfatigue lifeNaval architecture. Shipbuilding. Marine engineeringVM1-989OceanographyGC1-1581ENJournal of Marine Science and Engineering, Vol 9, Iss 1280, p 1280 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	spherical pressure shell maraging steel three-dimensional crack propagation simulation fatigue life Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581
spellingShingle	spherical pressure shell maraging steel three-dimensional crack propagation simulation fatigue life Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 Yongmei Zhu Rujun Li Jiahao Yang Three-Dimensional Surface Crack Growth of Maraging Steel Spherical Pressure Shell
description	This study focused on the three-dimensional surface crack growth of a spherical pressure shell. Eight maraging steel 18Ni (250) samples were fabricated and tested, and the fatigue crack growth rate curves were obtained. Considering the influence of plastic closure effect and sample thickness on crack growth, the fitting formula of fatigue crack growth only related to materials was obtained. Based on the three-dimensional crack closure theory and the strip yield model, a three-dimensional surface crack growth model of spherical pressure shell was established. By using a self-written program and FRANC3D, the three-dimensional surface crack growth simulations of the spherical shell were completed. The influence of the initial shape ratio and initial depth of the crack on the crack growth and the fatigue life of the spherical shell was analyzed.
format	article
author	Yongmei Zhu Rujun Li Jiahao Yang
author_facet	Yongmei Zhu Rujun Li Jiahao Yang
author_sort	Yongmei Zhu
title	Three-Dimensional Surface Crack Growth of Maraging Steel Spherical Pressure Shell
title_short	Three-Dimensional Surface Crack Growth of Maraging Steel Spherical Pressure Shell
title_full	Three-Dimensional Surface Crack Growth of Maraging Steel Spherical Pressure Shell
title_fullStr	Three-Dimensional Surface Crack Growth of Maraging Steel Spherical Pressure Shell
title_full_unstemmed	Three-Dimensional Surface Crack Growth of Maraging Steel Spherical Pressure Shell
title_sort	three-dimensional surface crack growth of maraging steel spherical pressure shell
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/c32094abffa544588de8d58ab0c7f99a
work_keys_str_mv	AT yongmeizhu threedimensionalsurfacecrackgrowthofmaragingsteelsphericalpressureshell AT rujunli threedimensionalsurfacecrackgrowthofmaragingsteelsphericalpressureshell AT jiahaoyang threedimensionalsurfacecrackgrowthofmaragingsteelsphericalpressureshell
_version_	1718411641919373312

Three-Dimensional Surface Crack Growth of Maraging Steel Spherical Pressure Shell

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