Experimental and numerical investigations on slender panels with holes under symmetrical localised loads

Maiorana, Emanuele; Tetougueni, Cyrille Denis; Zampieri, Paolo; Pellegrino, Carlo

doi:10.1016/j.engstruct.2020.111323

Cited by 7 publications

(2 citation statements)

References 33 publications

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“…In this study the effects of the diameter and number of holes in the web on the flexural strength and failure mode of H-shaped high-strength steel beams were evaluated. Paper [ 34 ] presents experimental and numerical investigations on slender panels with holes under symmetrical localised loads. Parameters such as the geometry of the web plate, the position of the hole and the plate slenderness are found by authors as those most influencing the post-critical behaviour.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigations of Perforated CFRP Z-Cross-Section Profiles, under Axial Compression

Falkowicz

2022

Materials

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Thin-walled elements, thanks to their good properties, are increasingly used in structural applications, especially in the aircraft and building industries. These kinds of structures are often perforated for reducing weight and to ease servicing and maintenance operations, e.g., in aircraft wing ribs. These perforations cause a redistribution of stresses in the element which may change the ultimate strength of the structure and their elastic stiffness. The buckling behaviour of structural members with perforations is significantly influenced by the size, location, shape and number of perforations. Therefore, it is necessary to investigate the influence of these kinds of cut-out parameters on thin-walled structure buckling and postbuckling behaviour. This study investigated numerically the buckling and postbuckling behaviour of thin-walled perforated composite profiles with a Z-cross-section subjected to compression load. Numerical calculations were performed using the finite element method in the ABAQUS® program. The study investigated the effect of localisation and geometric parameters of cut-outs on the buckling load, postbuckling equilibrium path and failure load. Moreover, the perforated profiles were compared with a profile without cut-outs, which were experimentally tested in previous research. Results showed that the perforated profiles with a Z-cross-section do not lose their stability in the post-critical range. What is more, a well-chosen arrangement of the holes may prevent the mechanical properties from deteriorating.

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Section: Introductionmentioning

confidence: 99%

Numerical Investigations of Perforated CFRP Z-Cross-Section Profiles, under Axial Compression

Falkowicz

2022

Materials

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“…Therefore, the use of inclined rib constraints requires flexible control of inclination. To improve the integrity of stiffening ribs and concrete, scholars conducted experimental research on perforated steel plate stiffeners [8][9][10][11] and found that the perforated rib specimen showed a high ductility, which could improve the local stability of the external steel pipe and increase the longitudinal stress of the core concrete. It is suggested that the opening spacing of the stiffened rib of the perforated steel plate should be twice the diameter of the opening to better exert its ductility and energy dissipation capacity.…”

Section: Introductionmentioning

confidence: 99%

The Eccentric Compression Performance of Spirally Stiffened Thin-Walled Square Concrete-Filled Steel Tubular Laminated Composite Members

Wang

Wei

et al. 2022

Buildings

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To enhance the local buckling resistance of thin-walled steel pipes and enhance their fire and corrosion resistance, a new spirally stiffened thin-walled square concrete-filled steel tubular laminated composite member with transverse ribs is proposed. Through the four forms of combined members for eccentric pressure testing, it was found that: ordinary thin-walled steel pipe concrete drum buckling is more severe; with spiral ribs, the buckling is limited between the stiffening ribs; and the deformation is significantly reduced. By addressing the problem of cooperative work between the inner and outer structural layers of new components, it was found that, after setting constraints such as steel bars, the integrity of the two can be ensured, and the stress performance is significantly improved; compared to ordinary steel pipe concrete, the load-carrying capacity is 17.9% higher, and the deformation capacity is roughly equivalent. Spiral ribs as a new form of spatial restraint, in addition to increasing the local bending stiffness, manifest an overall restraint role in limiting lateral deformation of the steel pipe, whereas the role of vertical stiffness is insignificant. Based on test evidence, the influences of the width to thickness ratio of spiral ribs and pitch were determined, and reasonable structural measures for the members were given. Through the N–M relationship curve, the limit of damage in compression and tension under eccentricity was obtained at an eccentricity of about 0.9. Finally, a method for calculating the eccentric compressive ultimate load capacity of this new composite member was proposed.

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Serviceability limit state of incrementally launched steel bridge I-girders

Rogač

2024

Engineering Structures

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Experimental and numerical investigations on slender panels with holes under symmetrical localised loads

Cited by 7 publications

References 33 publications

Numerical Investigations of Perforated CFRP Z-Cross-Section Profiles, under Axial Compression

Numerical Investigations of Perforated CFRP Z-Cross-Section Profiles, under Axial Compression

The Eccentric Compression Performance of Spirally Stiffened Thin-Walled Square Concrete-Filled Steel Tubular Laminated Composite Members

Serviceability limit state of incrementally launched steel bridge I-girders

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