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Numerical Prediction of Local Instability in Double Corrugated Profiles

The technological process of forming the double-corrugated structures of the K-span system causes deep transverse embossing on the surface of the profiles. Such profile geometry makes it difficult to apply classical theories related to plastic failure mechanisms to identify the formation of local in...

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Detalles Bibliográficos
Autores principales: Piekarczuk, Artur, Więch, Przemysław
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8538853/
https://www.ncbi.nlm.nih.gov/pubmed/34683597
http://dx.doi.org/10.3390/ma14206002
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author Piekarczuk, Artur
Więch, Przemysław
author_facet Piekarczuk, Artur
Więch, Przemysław
author_sort Piekarczuk, Artur
collection PubMed
description The technological process of forming the double-corrugated structures of the K-span system causes deep transverse embossing on the surface of the profiles. Such profile geometry makes it difficult to apply classical theories related to plastic failure mechanisms to identify the formation of local instabilities. This article presents an original method for the prediction of local instabilities of double-corrugated structures. The method was developed on the basis of a hierarchical validated FEM model. The geometrically and materially nonlinear analysis method was adopted to perform numerical calculations. The results of calculations enabled the determination of reference equilibrium paths for the eccentrically compressed shell element. Based on the analysis of nonlinear equilibrium paths, a method for predicting the beginning and the end of the appearance of local instabilities in the elastoplastic pre-buckling range was developed.
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spelling pubmed-85388532021-10-24 Numerical Prediction of Local Instability in Double Corrugated Profiles Piekarczuk, Artur Więch, Przemysław Materials (Basel) Article The technological process of forming the double-corrugated structures of the K-span system causes deep transverse embossing on the surface of the profiles. Such profile geometry makes it difficult to apply classical theories related to plastic failure mechanisms to identify the formation of local instabilities. This article presents an original method for the prediction of local instabilities of double-corrugated structures. The method was developed on the basis of a hierarchical validated FEM model. The geometrically and materially nonlinear analysis method was adopted to perform numerical calculations. The results of calculations enabled the determination of reference equilibrium paths for the eccentrically compressed shell element. Based on the analysis of nonlinear equilibrium paths, a method for predicting the beginning and the end of the appearance of local instabilities in the elastoplastic pre-buckling range was developed. MDPI 2021-10-12 /pmc/articles/PMC8538853/ /pubmed/34683597 http://dx.doi.org/10.3390/ma14206002 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
Piekarczuk, Artur
Więch, Przemysław
Numerical Prediction of Local Instability in Double Corrugated Profiles
title Numerical Prediction of Local Instability in Double Corrugated Profiles
title_full Numerical Prediction of Local Instability in Double Corrugated Profiles
title_fullStr Numerical Prediction of Local Instability in Double Corrugated Profiles
title_full_unstemmed Numerical Prediction of Local Instability in Double Corrugated Profiles
title_short Numerical Prediction of Local Instability in Double Corrugated Profiles
title_sort numerical prediction of local instability in double corrugated profiles
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8538853/
https://www.ncbi.nlm.nih.gov/pubmed/34683597
http://dx.doi.org/10.3390/ma14206002
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