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Processing-Induced Inhomogeneity of Yield Stress in Polycarbonate Product and Its Influence on the Impact Behavior

In this study, an integrated methodology for impact analysis of polycarbonate (PC) product is proposed which incorporates the processing-induced inhomogeneity of yield stress. A previously developed model is extended to predict the inhomogeneous yield stress distribution along the specimen by using...

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Detalles Bibliográficos
Autores principales: Xu, Yingjie, Lu, Huan, Gao, Tenglong, Zhang, Weihong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6432517/
https://www.ncbi.nlm.nih.gov/pubmed/30979168
http://dx.doi.org/10.3390/polym8030072
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author Xu, Yingjie
Lu, Huan
Gao, Tenglong
Zhang, Weihong
author_facet Xu, Yingjie
Lu, Huan
Gao, Tenglong
Zhang, Weihong
author_sort Xu, Yingjie
collection PubMed
description In this study, an integrated methodology for impact analysis of polycarbonate (PC) product is proposed which incorporates the processing-induced inhomogeneity of yield stress. A previously developed model is extended to predict the inhomogeneous yield stress distribution along the specimen by using the thermal history experienced during injection molding. A strain rate-dependent elastic-plastic model combining the processing-induced yield stress is applied to model the mechanical behavior of PC. Finite element simulation for notched Izod impact test is then conducted to analyze the impact behaviors of PC specimens with different thermal histories. Numerical results of the fracture energies are compared with experimental measurements.
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spelling pubmed-64325172019-04-02 Processing-Induced Inhomogeneity of Yield Stress in Polycarbonate Product and Its Influence on the Impact Behavior Xu, Yingjie Lu, Huan Gao, Tenglong Zhang, Weihong Polymers (Basel) Article In this study, an integrated methodology for impact analysis of polycarbonate (PC) product is proposed which incorporates the processing-induced inhomogeneity of yield stress. A previously developed model is extended to predict the inhomogeneous yield stress distribution along the specimen by using the thermal history experienced during injection molding. A strain rate-dependent elastic-plastic model combining the processing-induced yield stress is applied to model the mechanical behavior of PC. Finite element simulation for notched Izod impact test is then conducted to analyze the impact behaviors of PC specimens with different thermal histories. Numerical results of the fracture energies are compared with experimental measurements. MDPI 2016-03-04 /pmc/articles/PMC6432517/ /pubmed/30979168 http://dx.doi.org/10.3390/polym8030072 Text en © 2016 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons by Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Xu, Yingjie
Lu, Huan
Gao, Tenglong
Zhang, Weihong
Processing-Induced Inhomogeneity of Yield Stress in Polycarbonate Product and Its Influence on the Impact Behavior
title Processing-Induced Inhomogeneity of Yield Stress in Polycarbonate Product and Its Influence on the Impact Behavior
title_full Processing-Induced Inhomogeneity of Yield Stress in Polycarbonate Product and Its Influence on the Impact Behavior
title_fullStr Processing-Induced Inhomogeneity of Yield Stress in Polycarbonate Product and Its Influence on the Impact Behavior
title_full_unstemmed Processing-Induced Inhomogeneity of Yield Stress in Polycarbonate Product and Its Influence on the Impact Behavior
title_short Processing-Induced Inhomogeneity of Yield Stress in Polycarbonate Product and Its Influence on the Impact Behavior
title_sort processing-induced inhomogeneity of yield stress in polycarbonate product and its influence on the impact behavior
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6432517/
https://www.ncbi.nlm.nih.gov/pubmed/30979168
http://dx.doi.org/10.3390/polym8030072
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