Experiment and analysis of hat-stringer-stiffened composite curved panels under axial compression

Mo, Yuming; Ge, Dongyun; Zhou, J. H.

doi:10.1016/j.compstruct.2014.11.074

Cited by 44 publications

(8 citation statements)

References 27 publications

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“…Stringers on the stiffened panels carry out and transfer loads. There are different shapes of stringers that are commonly riveted to the skin, i.e., C-shape [ 24 ], hat-shape [ 25 , 26 ], I-shape [ 24 , 27 ], J-shape [ 28 ], L-shape [ 24 , 29 , 30 ], T-shape [ 29 , 31 ], and Z-shape [ 32 , 33 ]. Due to the advantages of high stability, superior damage tolerance [ 34 ], and light weight [ 35 , 36 ], grid stiffened panels have been applied in the aircraft and aerospace industries.…”

Section: Introductionmentioning

confidence: 99%

Ultimate Load-Carrying Ability of Rib-Stiffened 2024-T3 and 7075-T6 Aluminium Alloy Panels under Axial Compression

et al. 2021

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Stringer-stiffened panels made of aluminium alloys are often used as structural elements in the aircraft industry. The load-carrying capacity of this type of structure cannot relieve the reduction in strength in the event of local buckling. In this paper, a method of fabrication of rib-stiffened panels made of EN AW-2024-T3 Alclad and EN AW-7075-T6 Alclad has been proposed using single point incremental forming. Panels made of sheets of different thickness and with different values of forming parameters were tested under the axial compression test. A digital image correlation (DIC)-based system was used to find the distribution of strain in the panels. The results of the axial compression tests revealed that the panels had two distinct buckling modes: (i) The panels buckled halfway up the panel height towards the rib, without any appreciable loss of rib stability, and (ii) the rib first lost stability at half its height with associated breakage, and then the panel was deflected in the opposite direction to the position of the rib. Different buckling modes can be associated with the character of transverse and longitudinal springback of panels resulting from local interaction of the rotating tool on the surface of the formed ribs.

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Section: Introductionmentioning

confidence: 99%

Ultimate Load-Carrying Ability of Rib-Stiffened 2024-T3 and 7075-T6 Aluminium Alloy Panels under Axial Compression

et al. 2021

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“…Carbon fiber-reinforced polymer (CFRP)-stiffened composite plates subjected to axial compression load was studied by Ishikawa et al [ 1 ], Stevens et al [ 2 ], Chiarelli et al [ 3 ], Kong et al [ 4 ], Falzon and Hitchings [ 5 ], Meeks et al [ 6 ], Mo et al [ 7 ], Zhu et al [ 8 ], Feng et al [ 9 ], Kolanu et al [ 10 ], Massod et al [ 11 ] and Tan et al [ 12 ]. Glass fiber-reinforced polymer (GFRP)-stiffened composite plates subjected axial compression load was studied by Roberts et al [ 13 ] and Kolanu et al [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

GFRP Stiffened Plate with Square Cutout under Axial and Out-of-Plane Load

Sirajudeen

Alagusundaramoorthy

2021

Polymers

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The high-strength-to-weight ratio and corrosion resistance properties of glass-fiber-reinforced polymer (GFRP) composites makes them potentially well-suited for application in ship structures, bridges and off-shore oil platforms. These structures are often formed by stiffened plates and are subjected to axial load and out-of-plane load. Cutouts and openings are provided in the plates for access and maintenance. The main objective of this study was to examine the buckling behavior of GFRP-stiffened composite plates with square cutouts under a combination of axial and out-of-plane load up to failure. Four blade-stiffened composite plates without a cutout and four with square cutout were fabricated with stiffeners as a continuous layup of the flange plate using glass fiber and epoxy resin. The initial geometric imperfections were measured, and plate imperfections (Δx), stiffener imperfections (Δsy) and overall imperfections (Δsx) were calculated from the measurements. All fabricated-stiffened composite plates were tested up to failure. The finite element model was developed in ANSYS software and validated with the experimental results. It was observed that GFRP-stiffened composite plates failed by stiffener compression/stiffener tension mode of failure. The presence of out-of-plane loads and cutouts reduced the axial load carrying capacity of the stiffened composite plates.

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“…The next step of the study follows the preceding research described in [1]. The research also involves experimental and numerical approach similar to literatures [2,3]. In various experiments, different stiffener types were tested until failure to understand their performance [3,4].…”

Section: Introductionmentioning

confidence: 99%

Multi-configuration Stiffened Panels under Compressive Load: Part 1 – Theoretical Analysis

Ramly

Kuntjoro

Ghani

et al. 2018

IJET

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Stiffened panels are the structure used in the aircraft wing skin panels. Stiffened panels are often critical in compression load due to its thin structural configuration. This paper analyzes the critical loads of a multi configuration stiffened panels under axial compressive loading. The study comprised three main sections; theoretical analysis, numerical analysis and experimental analysis. The present paper deals only with the theoretical analysis. This first part of analysis is very important since the results will be the main input parameter for the subsequent numerical and experimental analysis. The analysis was done on the buckling properties of the panels. Four panel configurations were investigated. Results showed that even though the stiffened panels have the same cross-sectional area, their critical loads were not identical.

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Experiment and analysis of hat-stringer-stiffened composite curved panels under axial compression

Cited by 44 publications

References 27 publications

Ultimate Load-Carrying Ability of Rib-Stiffened 2024-T3 and 7075-T6 Aluminium Alloy Panels under Axial Compression

Ultimate Load-Carrying Ability of Rib-Stiffened 2024-T3 and 7075-T6 Aluminium Alloy Panels under Axial Compression

GFRP Stiffened Plate with Square Cutout under Axial and Out-of-Plane Load

Multi-configuration Stiffened Panels under Compressive Load: Part 1 – Theoretical Analysis

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