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Finite Element Analysis of Residual Stress Distribution Patterns of Prestressed Composites Considering Interphases
New finite element analysis procedures are developed in this study to obtain the precise stress distribution patterns of prestressed composites. Within the FEM procedures, an equivalent thermal method is modified to realize the prestress application, and a multi-step methodology is developed to cons...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9964311/ https://www.ncbi.nlm.nih.gov/pubmed/36836975 http://dx.doi.org/10.3390/ma16041345 |
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author | Wang, Meng Hang, Xiaochen |
author_facet | Wang, Meng Hang, Xiaochen |
author_sort | Wang, Meng |
collection | PubMed |
description | New finite element analysis procedures are developed in this study to obtain the precise stress distribution patterns of prestressed composites. Within the FEM procedures, an equivalent thermal method is modified to realize the prestress application, and a multi-step methodology is developed to consider coupling effects of polymer curing and prestress application. Thereafter, the effects of interphases’ properties, including the elastic modulus and coefficient of thermal expansion (CTE), on the stress distribution patterns are revealed. Analytical methods for residual stress prediction are modified in this study to demonstrate the finite element analysis procedures. From the residual stress results, it is found that the increase in the prestress level tends to contribute to the initiation of interphase debonding. The increase in the elastic modulus or CTE of the interphase results in very large circumferential and axial stress values appearing in the interphase. When the elastic modulus in the interphase is heterogeneous, the predicted stress values in the fiber and matrix are similar to the results predicted with the equivalent elastic modulus of the interphases. However, the heterogeneous elastic modulus results in serious circumferential and axial stress gradients in the interphase. |
format | Online Article Text |
id | pubmed-9964311 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-99643112023-02-26 Finite Element Analysis of Residual Stress Distribution Patterns of Prestressed Composites Considering Interphases Wang, Meng Hang, Xiaochen Materials (Basel) Article New finite element analysis procedures are developed in this study to obtain the precise stress distribution patterns of prestressed composites. Within the FEM procedures, an equivalent thermal method is modified to realize the prestress application, and a multi-step methodology is developed to consider coupling effects of polymer curing and prestress application. Thereafter, the effects of interphases’ properties, including the elastic modulus and coefficient of thermal expansion (CTE), on the stress distribution patterns are revealed. Analytical methods for residual stress prediction are modified in this study to demonstrate the finite element analysis procedures. From the residual stress results, it is found that the increase in the prestress level tends to contribute to the initiation of interphase debonding. The increase in the elastic modulus or CTE of the interphase results in very large circumferential and axial stress values appearing in the interphase. When the elastic modulus in the interphase is heterogeneous, the predicted stress values in the fiber and matrix are similar to the results predicted with the equivalent elastic modulus of the interphases. However, the heterogeneous elastic modulus results in serious circumferential and axial stress gradients in the interphase. MDPI 2023-02-05 /pmc/articles/PMC9964311/ /pubmed/36836975 http://dx.doi.org/10.3390/ma16041345 Text en © 2023 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 Wang, Meng Hang, Xiaochen Finite Element Analysis of Residual Stress Distribution Patterns of Prestressed Composites Considering Interphases |
title | Finite Element Analysis of Residual Stress Distribution Patterns of Prestressed Composites Considering Interphases |
title_full | Finite Element Analysis of Residual Stress Distribution Patterns of Prestressed Composites Considering Interphases |
title_fullStr | Finite Element Analysis of Residual Stress Distribution Patterns of Prestressed Composites Considering Interphases |
title_full_unstemmed | Finite Element Analysis of Residual Stress Distribution Patterns of Prestressed Composites Considering Interphases |
title_short | Finite Element Analysis of Residual Stress Distribution Patterns of Prestressed Composites Considering Interphases |
title_sort | finite element analysis of residual stress distribution patterns of prestressed composites considering interphases |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9964311/ https://www.ncbi.nlm.nih.gov/pubmed/36836975 http://dx.doi.org/10.3390/ma16041345 |
work_keys_str_mv | AT wangmeng finiteelementanalysisofresidualstressdistributionpatternsofprestressedcompositesconsideringinterphases AT hangxiaochen finiteelementanalysisofresidualstressdistributionpatternsofprestressedcompositesconsideringinterphases |