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Modeling of Internal Geometric Variability and Statistical Property Prediction of Braided Composites

Due to the advantages of high specific strength, specific stiffness, and excellent fatigue resistance, carbon fiber reinforced braided composites have been widely applied in engineering. Since the molding process of braided composites is complex and immature, substantial variability of the internal...

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Autores principales: Li, Wenli, Zhu, Donghui, Shao, Wenqi, Jiang, Dong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9369891/
https://www.ncbi.nlm.nih.gov/pubmed/35955266
http://dx.doi.org/10.3390/ma15155332
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author Li, Wenli
Zhu, Donghui
Shao, Wenqi
Jiang, Dong
author_facet Li, Wenli
Zhu, Donghui
Shao, Wenqi
Jiang, Dong
author_sort Li, Wenli
collection PubMed
description Due to the advantages of high specific strength, specific stiffness, and excellent fatigue resistance, carbon fiber reinforced braided composites have been widely applied in engineering. Since the molding process of braided composites is complex and immature, substantial variability of the internal geometry exists in composites, in which the yarn path with uncertainty is a main factor, so it is necessary to establish an uncertainty model to study the influence of randomness of the yarn path on mechanical properties, which is significantly related to the fatigue resistance properties of composite. An uncertain mesoscopic model with uniform distribution of yarn paths is proposed. Assuming the yarn path is spatially varying in interval range, the variability of yarn path is represented geometrically in the unit cell of composite. The three-dimensional coordinates of the yarn trajectory are calculated, the meso-uncertainty models of 2-D and 2.5-D braided composites are established. The equivalent elastic parameters and the thermal expansion coefficients are obtained by applying homogenization method and temperature field boundary conditions to the mesoscopic model. The effect of yarn path uncertainty on the statistical characteristics of elastic and thermal parameters of braided composites was studied by using Monte-Carlo simulation. A simulation method for modeling yarn path uncertainty of braided composites is provided in this paper for predicting the statistical characteristics of the equivalent elastic and thermal parameters.
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spelling pubmed-93698912022-08-12 Modeling of Internal Geometric Variability and Statistical Property Prediction of Braided Composites Li, Wenli Zhu, Donghui Shao, Wenqi Jiang, Dong Materials (Basel) Article Due to the advantages of high specific strength, specific stiffness, and excellent fatigue resistance, carbon fiber reinforced braided composites have been widely applied in engineering. Since the molding process of braided composites is complex and immature, substantial variability of the internal geometry exists in composites, in which the yarn path with uncertainty is a main factor, so it is necessary to establish an uncertainty model to study the influence of randomness of the yarn path on mechanical properties, which is significantly related to the fatigue resistance properties of composite. An uncertain mesoscopic model with uniform distribution of yarn paths is proposed. Assuming the yarn path is spatially varying in interval range, the variability of yarn path is represented geometrically in the unit cell of composite. The three-dimensional coordinates of the yarn trajectory are calculated, the meso-uncertainty models of 2-D and 2.5-D braided composites are established. The equivalent elastic parameters and the thermal expansion coefficients are obtained by applying homogenization method and temperature field boundary conditions to the mesoscopic model. The effect of yarn path uncertainty on the statistical characteristics of elastic and thermal parameters of braided composites was studied by using Monte-Carlo simulation. A simulation method for modeling yarn path uncertainty of braided composites is provided in this paper for predicting the statistical characteristics of the equivalent elastic and thermal parameters. MDPI 2022-08-03 /pmc/articles/PMC9369891/ /pubmed/35955266 http://dx.doi.org/10.3390/ma15155332 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
Li, Wenli
Zhu, Donghui
Shao, Wenqi
Jiang, Dong
Modeling of Internal Geometric Variability and Statistical Property Prediction of Braided Composites
title Modeling of Internal Geometric Variability and Statistical Property Prediction of Braided Composites
title_full Modeling of Internal Geometric Variability and Statistical Property Prediction of Braided Composites
title_fullStr Modeling of Internal Geometric Variability and Statistical Property Prediction of Braided Composites
title_full_unstemmed Modeling of Internal Geometric Variability and Statistical Property Prediction of Braided Composites
title_short Modeling of Internal Geometric Variability and Statistical Property Prediction of Braided Composites
title_sort modeling of internal geometric variability and statistical property prediction of braided composites
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9369891/
https://www.ncbi.nlm.nih.gov/pubmed/35955266
http://dx.doi.org/10.3390/ma15155332
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