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A Novel Approach to Predict Wrinkling of Aluminum Alloy During Warm/Hot Sheet Hydroforming Based on an Improved Yoshida Buckling Test

In order to predict the wrinkling of sheet metal under the influence of fluid pressure and temperature during warm/hot hydroforming, a numerical simulation model for sheet wrinkling prediction was established, taking into account through-thickness normal stress induced by fluid pressure. From simula...

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Detalles Bibliográficos
Autores principales: Cai, Gaoshen, Fu, Jubo, Zhang, Dongxing, Yang, Jinlin, Yuan, Yongfeng, Lang, Lihui, Alexandrov, Sergei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7085020/
https://www.ncbi.nlm.nih.gov/pubmed/32151070
http://dx.doi.org/10.3390/ma13051165
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author Cai, Gaoshen
Fu, Jubo
Zhang, Dongxing
Yang, Jinlin
Yuan, Yongfeng
Lang, Lihui
Alexandrov, Sergei
author_facet Cai, Gaoshen
Fu, Jubo
Zhang, Dongxing
Yang, Jinlin
Yuan, Yongfeng
Lang, Lihui
Alexandrov, Sergei
author_sort Cai, Gaoshen
collection PubMed
description In order to predict the wrinkling of sheet metal under the influence of fluid pressure and temperature during warm/hot hydroforming, a numerical simulation model for sheet wrinkling prediction was established, taking into account through-thickness normal stress induced by fluid pressure. From simulations using linear and quadratic elements, respectively, it was found that the latter gave results that were much closer to experimental data. A novel experimental method based on an improved Yoshida Buckling Test (YBT) was proposed for testing the wrinkling properties of sheets under the through-thickness normal stress. A wrinkling coefficient suitable for predicting wrinkling was also presented. Based on the numerical simulations, an experimental validation of wrinkling performance was conducted. Ridge-height curves measured along the main diagonal tensile direction of the sheet were presented and showed that the wrinkling prediction criterion provided good discrimination. Furthermore, the wrinkling properties of several different materials were simulated to evaluate the accuracy of the prediction method, and the results revealed that the improved YBT gave good predictions for wrinkling in the conventional sheet metal forming process, while the prediction results for wrinkling in warm/hot sheet hydroforming were also accurate with the fluid pressure of zero.
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spelling pubmed-70850202020-03-23 A Novel Approach to Predict Wrinkling of Aluminum Alloy During Warm/Hot Sheet Hydroforming Based on an Improved Yoshida Buckling Test Cai, Gaoshen Fu, Jubo Zhang, Dongxing Yang, Jinlin Yuan, Yongfeng Lang, Lihui Alexandrov, Sergei Materials (Basel) Article In order to predict the wrinkling of sheet metal under the influence of fluid pressure and temperature during warm/hot hydroforming, a numerical simulation model for sheet wrinkling prediction was established, taking into account through-thickness normal stress induced by fluid pressure. From simulations using linear and quadratic elements, respectively, it was found that the latter gave results that were much closer to experimental data. A novel experimental method based on an improved Yoshida Buckling Test (YBT) was proposed for testing the wrinkling properties of sheets under the through-thickness normal stress. A wrinkling coefficient suitable for predicting wrinkling was also presented. Based on the numerical simulations, an experimental validation of wrinkling performance was conducted. Ridge-height curves measured along the main diagonal tensile direction of the sheet were presented and showed that the wrinkling prediction criterion provided good discrimination. Furthermore, the wrinkling properties of several different materials were simulated to evaluate the accuracy of the prediction method, and the results revealed that the improved YBT gave good predictions for wrinkling in the conventional sheet metal forming process, while the prediction results for wrinkling in warm/hot sheet hydroforming were also accurate with the fluid pressure of zero. MDPI 2020-03-05 /pmc/articles/PMC7085020/ /pubmed/32151070 http://dx.doi.org/10.3390/ma13051165 Text en © 2020 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Cai, Gaoshen
Fu, Jubo
Zhang, Dongxing
Yang, Jinlin
Yuan, Yongfeng
Lang, Lihui
Alexandrov, Sergei
A Novel Approach to Predict Wrinkling of Aluminum Alloy During Warm/Hot Sheet Hydroforming Based on an Improved Yoshida Buckling Test
title A Novel Approach to Predict Wrinkling of Aluminum Alloy During Warm/Hot Sheet Hydroforming Based on an Improved Yoshida Buckling Test
title_full A Novel Approach to Predict Wrinkling of Aluminum Alloy During Warm/Hot Sheet Hydroforming Based on an Improved Yoshida Buckling Test
title_fullStr A Novel Approach to Predict Wrinkling of Aluminum Alloy During Warm/Hot Sheet Hydroforming Based on an Improved Yoshida Buckling Test
title_full_unstemmed A Novel Approach to Predict Wrinkling of Aluminum Alloy During Warm/Hot Sheet Hydroforming Based on an Improved Yoshida Buckling Test
title_short A Novel Approach to Predict Wrinkling of Aluminum Alloy During Warm/Hot Sheet Hydroforming Based on an Improved Yoshida Buckling Test
title_sort novel approach to predict wrinkling of aluminum alloy during warm/hot sheet hydroforming based on an improved yoshida buckling test
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7085020/
https://www.ncbi.nlm.nih.gov/pubmed/32151070
http://dx.doi.org/10.3390/ma13051165
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