Ayrton-Perry approach for the lateral-torsional buckling resistance of mono-symmetric I-section beams

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures Pub Date : 2025-03-04 DOI:10.1016/j.tws.2025.113125

L. Simões da Silva , J.O. Gomes Jr. , J.O. Ferreira Filho , H. Carvalho

{"title":"Ayrton-Perry approach for the lateral-torsional buckling resistance of mono-symmetric I-section beams","authors":"L. Simões da Silva , J.O. Gomes Jr. , J.O. Ferreira Filho , H. Carvalho","doi":"10.1016/j.tws.2025.113125","DOIUrl":null,"url":null,"abstract":"<div><div>The Ayrton-Perry approach is the base of the Eurocode 3 design rules for the verification of the buckling resistance of prismatic members, in which different buckling curves associated to different imperfection factors are suggested according to the sections, steel grades, and other parameters. In the revised version of Eurocode 3, the lateral-torsional buckling resistance of simply-supported doubly-symmetric I-section beams is prescribed using a formulation based on the Ayrton-Perry approach and combined with a calibrated generalized imperfection. However, for mono-symmetric I-beams, the General Case predicted in the last version of Eurocode 3 has been maintained, which results in large scatter and an inconsistent design. This paper extends the new Ayrton-Perry approach available in the new version of Eurocode 3 to deal with simply supported mono-symmetric I-section beams under different loading conditions. An advanced numerical model is built and validated to conduct a reliable parametric study in order to assess the available design methodologies and the proposed extended formulation. It is concluded that the proposed formulation exhibits safe-sided results which better agreement with experimental results and advanced numerical simulations, providing more economic and sustainable solutions for mono-symmetric members.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"211 ","pages":"Article 113125"},"PeriodicalIF":5.7000,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Thin-Walled Structures","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0263823125002198","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CIVIL","Score":null,"Total":0}

引用次数: 0

Abstract

The Ayrton-Perry approach is the base of the Eurocode 3 design rules for the verification of the buckling resistance of prismatic members, in which different buckling curves associated to different imperfection factors are suggested according to the sections, steel grades, and other parameters. In the revised version of Eurocode 3, the lateral-torsional buckling resistance of simply-supported doubly-symmetric I-section beams is prescribed using a formulation based on the Ayrton-Perry approach and combined with a calibrated generalized imperfection. However, for mono-symmetric I-beams, the General Case predicted in the last version of Eurocode 3 has been maintained, which results in large scatter and an inconsistent design. This paper extends the new Ayrton-Perry approach available in the new version of Eurocode 3 to deal with simply supported mono-symmetric I-section beams under different loading conditions. An advanced numerical model is built and validated to conduct a reliable parametric study in order to assess the available design methodologies and the proposed extended formulation. It is concluded that the proposed formulation exhibits safe-sided results which better agreement with experimental results and advanced numerical simulations, providing more economic and sustainable solutions for mono-symmetric members.

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

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.