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Volume 14
Issue 20
10.3390/ma14206002
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Article

Numerical Prediction of Local Instability in Double Corrugated Profiles

by
Artur Piekarczuk
* and
Przemysław Więch
Instytut Techniki Budowlanej Filtrowa 1, 00-611 Warsaw, Poland
*
Author to whom correspondence should be addressed.
Materials 2021, 14(20), 6002; https://doi.org/10.3390/ma14206002
Submission received: 31 August 2021 / Revised: 4 October 2021 / Accepted: 8 October 2021 / Published: 12 October 2021
(This article belongs to the Special Issue Modeling and Analysis of Static, Dynamic, and Thermal Behavior of Shell, Plate, and Beam Structures)
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Abstract

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.
Keywords: double-corrugated profile; buckling; validation; FEM double-corrugated profile; buckling; validation; FEM

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MDPI and ACS Style

Piekarczuk, A.; Więch, P. Numerical Prediction of Local Instability in Double Corrugated Profiles. Materials 2021, 14, 6002. https://doi.org/10.3390/ma14206002

AMA Style

Piekarczuk A, Więch P. Numerical Prediction of Local Instability in Double Corrugated Profiles. Materials. 2021; 14(20):6002. https://doi.org/10.3390/ma14206002

Chicago/Turabian Style

Piekarczuk, Artur, and Przemysław Więch. 2021. "Numerical Prediction of Local Instability in Double Corrugated Profiles" Materials 14, no. 20: 6002. https://doi.org/10.3390/ma14206002

APA Style

Piekarczuk, A., & Więch, P. (2021). Numerical Prediction of Local Instability in Double Corrugated Profiles. Materials, 14(20), 6002. https://doi.org/10.3390/ma14206002

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