Local and global buckling prevention design of transformed triangular corrugated plates under shear and bending

IF 6.6 1区工程技术 Q1 ENGINEERING, CIVIL Thin-Walled Structures Pub Date : 2025-03-02 DOI:10.1016/j.tws.2025.113135

Yanguo Hou , Chenbao Wen , Kuisheng Liu , Jinsong Duan , Haojun Sun , Yanlin Guo

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Abstract

This study investigates the local and global buckling behavior of Transformed Triangular Corrugated Steel Plates (TT-CSP) under bending and shear forces. Theoretical derivations and numerical analyses are employed to establish formulas for the elastic local and global buckling loads. The effects of TT-CSP aspect ratio, fold plate width ratio, TT-CSP thickness, and corrugation folding angle on buckling behavior are examined. A design method for preventing local and global buckling in TT-CSPs is developed based on elastic buckling load and ultimate strength, validated through numerical analyses. The results indicate that the vertical boundaries of TT-CSP do not satisfy the plane assumption, significantly reducing the elastic buckling load and ultimate strength. The width ratio of the main-plate to the sub-plate is identified as the most critical factor affecting the local buckling load. The thickness of TT-CSPs influences shear deformation, with greater thickness leading to a reduction in the local buckling coefficient, whereas corrugation folding angle have a limited impact. Additionally, the limits of the normalized width-to-height ratio for bending are found to be more stringent than those for shear.

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变形三角波纹板在剪切和弯曲作用下的局部和全局防屈曲设计

本文研究了变形三角波纹钢板（TT-CSP）在弯曲和剪切力作用下的局部和全局屈曲行为。通过理论推导和数值分析，建立了弹性局部和整体屈曲载荷的计算公式。考察了TT-CSP长径比、折叠板宽度比、TT-CSP厚度和波纹折叠角对屈曲行为的影响。基于弹性屈曲载荷和极限强度，提出了防止tt - csp局部和全局屈曲的设计方法，并通过数值分析进行了验证。结果表明，TT-CSP的竖向边界不满足平面假设，显著降低了弹性屈曲载荷和极限强度。确定了主板与副板的宽度比是影响局部屈曲载荷的最关键因素。tt - csp的厚度影响剪切变形，厚度越大导致局部屈曲系数降低，而波纹折叠角的影响有限。此外，发现弯曲的归一化宽高比的限制比剪切的限制更严格。

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

Thin-Walled Structures 工程技术-工程：土木

CiteScore

9.60

自引率

20.30%

发文量

801

审稿时长

66 days

期刊介绍： Thin-walled structures comprises an important and growing proportion of engineering construction with areas of application becoming increasingly diverse, ranging from aircraft, bridges, ships and oil rigs to storage vessels, industrial buildings and warehouses. Many factors, including cost and weight economy, new materials and processes and the growth of powerful methods of analysis have contributed to this growth, and led to the need for a journal which concentrates specifically on structures in which problems arise due to the thinness of the walls. This field includes cold– formed sections, plate and shell structures, reinforced plastics structures and aluminium structures, and is of importance in many branches of engineering. The primary criterion for consideration of papers in Thin–Walled Structures is that they must be concerned with thin–walled structures or the basic problems inherent in thin–walled structures. Provided this criterion is satisfied no restriction is placed on the type of construction, material or field of application. Papers on theory, experiment, design, etc., are published and it is expected that many papers will contain aspects of all three.