Numerical analysis of behaviour of compressed thin-walled Z-profiles weakened by holes

Falkowicz, Katarzyna

doi:10.1051/matecconf/201925207010

Cited by 4 publications

(5 citation statements)

References 21 publications

(17 reference statements)

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“…This work is continuation of Author research, which part of them was published in [24][25][26][27]. The obtained results showed that we can influence on buckling and postbuckling behaviour of thinwalled columns by changing the shape and cut-out geometric parameters.…”

Section: Introductionsupporting

confidence: 52%

Linear Analysis of Thin-Walled Composite Profiles Weakened by Holes

Falkowicz

2023

Acta Mechanica Et Automatica

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The paper presents the results of the numerical analysis of the stability of C-section profiles together with the determination of the influence of the geometrical parameters of the holes and their arrangement on the strength properties of the profile, made of multilayer composite materials in a symmetrical arrangement of layers, which is deformed under the influence of the compressive force. Numerical calculations were carried out in the linear range (solution of the eigenvalue problem - critical state) using the finite element method (FEM) using the ABAQUS calculation package. Based on the obtained results, it was possible to determine the influence of the type and number of holes, their arrangement and geometric dimensions on the values of critical loads as well as the buckling modes of the profiles.

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Section: Introductionsupporting

confidence: 52%

Linear Analysis of Thin-Walled Composite Profiles Weakened by Holes

Falkowicz

2023

Acta Mechanica Et Automatica

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“…Their results show that the size and shape of holes influences the buckling behaviour. Similar investigations were performed [19] also on profiles made of glass fibre-reinforced polymer (GFRP) materials. The present work starts from results obtained in the mentioned paper to select the configuration of holes.…”

Section: Introductionmentioning

confidence: 78%

“…The shape and dimensions of holes was choosen based on the previous work [19,20], where the influence was tested of three parameters (opening ratio, spacing ratio, and hole shape) on the buckling load. Circular shaped holes gave the highest values of critical load.…”

Section: The Study Subjectmentioning

confidence: 99%

Influence of Composite Lay-Up on the Stability of Channel-Section Profiles Weakened by Cut-Outs – A Numerical Investigation

Falkowicz¹,

Wang²

2023

Adv. Sci. Technol. Res. J.

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This paper presents a numerical study on the stability of composite channel-section profiles weakened by cut-outs. Profiles were made from carbon fibre-reinforced polymer (CFRP) laminates and subjected to compression load. Numerical analysis carried out in the Abaqus software allowed us to determine the value of the buckling load and the corresponding buckling form. Four different laminate lay-ups were chosen to study their effects on the buckling behaviour of the profiles. Obtained results help identify the best laminate lay-up to get the highest critical buckling load for perforated columns. The performed analysis shows that [45/-45/90/0]s and [90/-45/45/0]s composite layups have the greatest impact on the buckling load. Moreover, the introduced perforation caused a change in the buckling form and a decrease in the critical load value.

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“…The authors investigated the buckling behaviour of aluminium alloy square hollow sections (SHS) with a circular hole under web crippling. Paper [ 32 ] presents the results of numerical analysis of compressed thin-walled Z-profiles weakened by holes with variable geometrical parameters, but made of constructional steel. In [ 33 ], the authors made some analysis of H-shaped high-strength steel beams with perforated web.…”

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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Numerical analysis of behaviour of compressed thin-walled Z-profiles weakened by holes

Cited by 4 publications

References 21 publications

Linear Analysis of Thin-Walled Composite Profiles Weakened by Holes

Linear Analysis of Thin-Walled Composite Profiles Weakened by Holes

Influence of Composite Lay-Up on the Stability of Channel-Section Profiles Weakened by Cut-Outs – A Numerical Investigation

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

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