Formability limits due to local buckling in thin-walled square tubes

IF 2.5 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications Pub Date : 2024-07-26 DOI:10.1177/14644207241266898

I.M. Almeida, J.P. Magrinho, M.B. Silva, P.A.F. Martins

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Abstract

This article focuses on the identification and quantification of the formability limits due to local buckling in thin-walled square tubes subjected to axial compression. The methodology involves subjecting a series of thin-walled square tubular specimens of varying lengths to axial compression to detect sudden changes in the evolution of in-plane strains over time and determine the critical strain values at the onset of local buckling. Digital image correlation is employed to monitor the evolution of the thin-walled surfaces and the in-plane strains during axial compression. Finite element analysis is utilized to create digital twins of the thin-walled square tubes subjected to axial compression. The overall methodology is based on a previously developed technique that was successfully applied to thin-walled circular tubes and results validate its effectiveness in determining, for the first time, the formability limits of thin-walled square tubes due to local buckling in principal strain space.

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薄壁方管局部屈曲导致的成型性限制

本文的重点是识别和量化薄壁方管在轴向压缩条件下因局部屈曲而产生的可成形性极限。该方法包括对一系列不同长度的薄壁方管试样进行轴向压缩，以检测面内应变随时间演变的突变，并确定局部屈曲开始时的临界应变值。采用数字图像相关技术监测薄壁表面的演变和轴向压缩过程中的面内应变。利用有限元分析来创建承受轴向压缩的薄壁方管的数字双胞胎。整体方法基于之前开发的技术，该技术已成功应用于薄壁圆管，其结果首次验证了该技术在确定薄壁方管因主应变空间局部屈曲而导致的可成形性限制方面的有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications 工程技术-材料科学：综合

CiteScore

4.70

自引率

8.30%

发文量

166

审稿时长

3 months

期刊介绍： The Journal of Materials: Design and Applications covers the usage and design of materials for application in an engineering context. The materials covered include metals, ceramics, and composites, as well as engineering polymers. "The Journal of Materials Design and Applications is dedicated to publishing papers of the highest quality, in a timely fashion, covering a variety of important areas in materials technology. The Journal''s publishers have a wealth of publishing expertise and ensure that authors are given exemplary service. Every attention is given to publishing the papers as quickly as possible. The Journal has an excellent international reputation, with a corresponding international Editorial Board from a large number of different materials areas and disciplines advising the Editor." Professor Bill Banks - University of Strathclyde, UK This journal is a member of the Committee on Publication Ethics (COPE).