Buckling of Thin-Walled Stiffened Panels in Transportation Structures: Benchmarking and Parametric Study

Adrevee Ronald Kusuma Sarwoko1

Aditya Rio Prabowo1,Email

Tohid Ghanbari-Ghazijahani2

Quang Thang Do3

Ridwan Ridwan4

Muhammad Imaduddin Hanif5

1Department of Mechanical Engineering, Universitas Sebelas Maret, Surakarta 57126, Indonesia.
2Department of Civil Engineering, Macquarie University, Sydney 2109, Australia.
3Department of Naval Architecture and Ocean Engineering, Nha Trang University, Nha Trang, 650000, Vietnam.
4Department of Mechanical Engineering, Universitas Merdeka Madiun, Madiun 63133, Indonesia.
5Laboratory of Design and Computational Mechanics, Faculty of Engineering, Universitas Sebelas Maret, Surakarta 5712, Indonesia.

Abstract

The frequent utilisation of aircraft across the globe significantly increases the likelihood of structural failures. One contributing factor to aviation accidents, as revealed by the International Civil Aviation Organization (ICAO) and Indonesian National Transportation Safety Committee (KNKT) investigation, is technical errors stemming from structural failures in aircraft. Buckling in thin-walled structures leads to a substantial increase in deformation and subsequent reduction in load-bearing capacity. To address this, lightweight and high-strength stiffener panels are employed. This study focuses on investigating the buckling resistance of stiffened aircraft panel structures. The finite element method is utilised to numerically simulate and analyse the stiffened panels under predetermined boundary conditions. Three main types of variations are considered: (i) stiffener type within the controlled volume, (ii) number and spacing of stiffeners in the panel, and (iii) stiffener configuration. The adopted material for the stiffener panels is 2024-T3 aluminum alloy, with panel geometry resembling the reference model. The findings demonstrate that adopting a Y-shaped stiffener geometry, incorporating transverse stiffeners, and reducing the distance between stiffeners enhance the buckling resistance and collapse performance of the stiffened panel structure.