Stability of composite thin-walled beams with shear deformability

Cortínez, Víctor H.; Piován, Marcelo T.

doi:10.1016/j.compstruc.2006.02.017

Cited by 58 publications

(33 citation statements)

References 23 publications

(55 reference statements)

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“…It is seen that the results by the present finite element analysis are in good agreement with the solution in Ref. [8].…”

Section: Numerical Examplessupporting

confidence: 80%

“…The effect of number of layers, lay-up sequence and fiber angle on buckling load was analys for symmetric and anti-symmetric lay-ups. Recently, Cortinez and Piovan [8] presented the stability analysis of composite thin-walled beams with open or closed cross-sections. This model is based on the use of the Hellinger-Reissner principle, that considers shear flexibility in a full form, general cross-section shapes and symmetric balanced or especially orthotropic laminates.…”

Section: Introductionmentioning

confidence: 99%

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Flexural–torsional buckling of thin-walled composite box beams

Vo¹,

Lee²

2007

Thin-Walled Structures

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Buckling of an axially loaded thin-walled laminated composite is studied. A general analytical model applicable to the flexural, torsional and flexural-torsional buckling of a thin-walled composite box beam subjected to axial load is developed. This model is based on the classical lamination theory, and accounts for the coupling of flexural and torsional modes for arbitrary laminate stacking sequence configuration, i.e. unsymmetric as well as symmetric, and various boundary conditions. A displacement-based one-dimensional finite element model is developed to predict critical loads and corresponding buckling modes for a thin-walled composite bar. Governing buckling equations are derived from the principle of the stationary value of total potential energy. Numerical results are obtained for axially loaded thin-walled composites addressing the effects of fiber angle, anisotropy, and boundary conditions on the critical buckling loads and mode shapes of the composites.

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“…It is seen that the results by the present finite element analysis are in good agreement with the solution in Ref. [8].…”

Section: Numerical Examplessupporting

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Flexural–torsional buckling of thin-walled composite box beams

Vo¹,

Lee²

2007

Thin-Walled Structures

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“…Since the early work of Bauld and Tzeng [1], many studies have been done to develop appropriate models for vibration [2][3][4][5][6][7][8][9][10][11][12] and lateral buckling problems [13][14][15][16][17][18][19][20] of thin-walled composite beams and only a few of them are cited here. More details of these works can be found in some books written by Kollar and Springer [21], Librescu and Song [22], and Hodges [23].…”

Section: Introductionmentioning

confidence: 99%

Vibration and lateral buckling optimisation of thin-walled laminated composite channel-section beams

Nguyễn

Lee

et al. 2016

Composite Structures

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Citation: Nguyen, Hoang, Lee, Jaehong, Vo, Thuc and Lanc, Domagoj (2016) Northumbria University has developed Northumbria Research Link (NRL) to enable users to access the University's research output. Copyright © and moral rights for items on NRL are retained by the individual author(s) and/or other copyright owners. Single copies of full items can be reproduced, displayed or performed, and given to third parties in any format or medium for personal research or study, educational, or not-for-profit purposes without prior permission or charge, provided the authors, title and full bibliographic details are given, as well as a hyperlink and/or URL to the original metadata page. The content must not be changed in any way. Full items must not be sold commercially in any format or medium without formal permission of the copyright holder. The full policy is available online: http://nrl.northumbria.ac.uk/policies.html This document may differ from the final, published version of the research and has been made available online in accordance with publisher policies. To read and/or cite from the published version of the research, please visit the publisher's website (a subscription may be required.) AbstractThis study presents vibration and lateral buckling optimisation of thin-walled laminated composite beams with channel sections. While flanges' width, web's height, and fibre orientation are simultaneously treated as design variables, the objective function involves maximising the fundamental frequency and critical buckling moment. Based on the classical beam theory, the beam element with seven degrees of freedom at each node is developed to solve the problem. Micro Genetic Algorithm (micro-GA) is then employed as an optimisation tool to obtain optimal results. A number of composite channel-section beams with different types of boundary conditions, span-to-height ratios, and lay-up schemes are investigated for the optimum design. The outcomes reveal that geometric parameters severely govern the optimal solution rather than the fibre orientation and it is considerably effective to use micro-GA compared with regular GA in term of optimal solution and convergence rate.

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“…Only some of many papers devoted to bending, vibration and buckling of fiber reinforced composite beams-type structures are cited here [1][2][3][4][5][6][7][8][9][10]. A development of a new kinds of progressive composites such as functionally graded materials (FGM) in recent years is in a rapid increase.…”

Section: Introductionmentioning

confidence: 99%