Bitlis Eren Üniversitesi Fen Bilimleri Dergisi

2147-3129 2147-3188

Bitlis Eren University

10.17798/bitlisfen.1652324

Numerical Modelization in Civil Engineering

İnşaat Mühendisliğinde Sayısal Modelleme

The effect of stiffeners on asymmetric (UPN) beams under eccentric loads

https://orcid.org/0009-0007-3026-2713

Kakhia

Ahmad

https://orcid.org/0000-0003-1396-2463

Karataş

Esra Eylem

YILDIZ TECHNICAL UNIVERSITY, FACULTY OF CIVIL ENGINEERING, DEPARTMENT OF CIVIL ENGINEERING

06 30 2025

14 2 1131 1150 03 11 2025 06 01 2025

2012

Bitlis Eren Üniversitesi Fen Bilimleri Dergisi

Stiffeners are crucial in enhancing the resistance of steel elements to both point and distributed vertical loads. However, one of the main challenges is the vertical and horizontal deflection experienced by steel beams under asymmetric loading conditions. This study investigates, using IDEA StatiCa software, the effect of stiffeners on the performance of European UPN steel beams subjected to eccentric point loads. A total of 12 beam models stiffened and unstiffened were studied, varying in height and yield strength. Finite element analysis was conducted using the Component-Based Finite Element Method (CBFEM) to accurately capture stress distribution and deflection behavior. The results show that stiffeners significantly reduce both vertical and lateral deflections and improve torsional stability. Furthermore, stiffened and unstiffened beams reached yield strength at similar load levels, but the presence of stiffeners limited post-yield deformations. The findings align with previous studies and confirm the value of stiffeners in enhancing the structural performance of asymmetric beams. This highlights the practical importance of stiffeners in UPN steel beam design, especially under eccentric loading where stability and local deformation are critical concerns.

Stiffeners Asymmetrical Section Eccentric Load Steel Beam

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