The Buckling analysis of heavy tapered bi-material composite columns with elliptical cross-section: Buckling of heavy columns with composite material

Byoung Koo Lee; Sang Jin Oh; Joon Kyu Lee

The Buckling analysis of heavy tapered bi-material composite columns with elliptical cross-section

Buckling of heavy columns with composite material

Authors

Byoung Koo Lee Department of Civil and Environmental Engineering, Wonkwang University https://orcid.org/0000-0001-6094-1759
Sang Jin Oh Department of Civil and Environmental Engineering, Mokpo National University
Joon Kyu Lee Department of Civil Engineering, University of Seoul https://orcid.org/0000-0002-7760-2849

Abstract

This study presents a detailed investigation into the stiffness characteristics and buckling behavior of heavy, tapered bi-material composite columns with the elliptical cross-section. These columns are laterally laminated using two distinct hybrid materials. The study addresses two primary objectives: (1) deriving explicit expressions for flexural rigidity and mass per unit length, and (2) applying these formulations to evaluate buckling behavior under self-weight conditions. The taper is represented by a linear variation along the bending axis of the elliptical cross-section. A governing differential equation for the buckled mode shape is formulated, and numerical techniques are applied to determine critical buckling loads and corresponding mode shapes. Parametric studies illustrate the influence of geometric and material variations, with the results presented through tables and figures.

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Published

24-12-2025

Issue

Articles in Press

Section

Original Article

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