Crack Growth Simulation of Functionally Graded Materials Based on Improved Bond-Based Peridynamic Model

Functionally graded materials (FGMs) are widely used in the aerospace industry, especially for the thermal protection shields of aerospace vehicles. Studies show that the initiation and expansion of micro-cracks are important factors that adversely affect the service life of these shields. Based on...

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Autores principales: Min, Liyi, Liu, Qiwen, Liu, Lisheng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8199696/
https://www.ncbi.nlm.nih.gov/pubmed/34199623
http://dx.doi.org/10.3390/ma14113032
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author Min, Liyi
Liu, Qiwen
Liu, Lisheng
author_facet Min, Liyi
Liu, Qiwen
Liu, Lisheng
author_sort Min, Liyi
collection PubMed
description Functionally graded materials (FGMs) are widely used in the aerospace industry, especially for the thermal protection shields of aerospace vehicles. Studies show that the initiation and expansion of micro-cracks are important factors that adversely affect the service life of these shields. Based on the peridynamic theory of bonds, an improved peridynamic model is proposed in the present study for FGMs. In the proposed model, integral equivalence is applied to calculate the required material parameters. Obtained results reveal that this method can better reflect the gradient change of material properties.
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spelling pubmed-81996962021-06-14 Crack Growth Simulation of Functionally Graded Materials Based on Improved Bond-Based Peridynamic Model Min, Liyi Liu, Qiwen Liu, Lisheng Materials (Basel) Article Functionally graded materials (FGMs) are widely used in the aerospace industry, especially for the thermal protection shields of aerospace vehicles. Studies show that the initiation and expansion of micro-cracks are important factors that adversely affect the service life of these shields. Based on the peridynamic theory of bonds, an improved peridynamic model is proposed in the present study for FGMs. In the proposed model, integral equivalence is applied to calculate the required material parameters. Obtained results reveal that this method can better reflect the gradient change of material properties. MDPI 2021-06-02 /pmc/articles/PMC8199696/ /pubmed/34199623 http://dx.doi.org/10.3390/ma14113032 Text en © 2021 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
Min, Liyi
Liu, Qiwen
Liu, Lisheng
Crack Growth Simulation of Functionally Graded Materials Based on Improved Bond-Based Peridynamic Model
title Crack Growth Simulation of Functionally Graded Materials Based on Improved Bond-Based Peridynamic Model
title_full Crack Growth Simulation of Functionally Graded Materials Based on Improved Bond-Based Peridynamic Model
title_fullStr Crack Growth Simulation of Functionally Graded Materials Based on Improved Bond-Based Peridynamic Model
title_full_unstemmed Crack Growth Simulation of Functionally Graded Materials Based on Improved Bond-Based Peridynamic Model
title_short Crack Growth Simulation of Functionally Graded Materials Based on Improved Bond-Based Peridynamic Model
title_sort crack growth simulation of functionally graded materials based on improved bond-based peridynamic model
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8199696/
https://www.ncbi.nlm.nih.gov/pubmed/34199623
http://dx.doi.org/10.3390/ma14113032
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AT liuqiwen crackgrowthsimulationoffunctionallygradedmaterialsbasedonimprovedbondbasedperidynamicmodel
AT liulisheng crackgrowthsimulationoffunctionallygradedmaterialsbasedonimprovedbondbasedperidynamicmodel

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