Application of the Finite Tube Method for the analysis of tubular members: Buckling length, signature curve

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures Pub Date : 2025-03-06 DOI:10.1016/j.tws.2025.113171

Sándor Ádány, Benjamin W. Schafer

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引用次数: 0

Abstract

In this paper classical stability concepts for plated members are extended to tubular members. First, a means for determining buckling length in tubular members is introduced. Buckling length is well-known and widely used in the buckling analysis and design of columns and beams, but not generally applied in the context of tubular members. A numerical technique, based on the Finite Tube Method recently developed by the authors, is introduced. The buckling length calculation is illustrated by examples covering different load cases and boundary conditions, leading to a variety of buckling shapes. With the ability to calculate the buckling length, it is possible to establish a member's stability signature curve, (i.e., a curve determined by associated pairs of buckling lengths and critical loads as first popularized by Hancock,) similarly to those widely used in the analysis and design of cold-formed steel members nowadays. Multiple examples are shown, including members subjected to compression and torsion. Finally, the buckling length is employed to reconstruct the Koiter-circle of compressed tubular members. Taken together this work demonstrates how the Finite Tube Method can help unify our stability understanding of plated and tubular members.

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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.