On buckling collapse and failure analysis of thin-walled composite lipped-channel columns subjected to uniaxial compression

Teter, Andrzej; Dębski, H.; Samborski, Sylwester

doi:10.1016/j.tws.2014.09.010

Cited by 55 publications

(41 citation statements)

References 20 publications

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“…It seems highly probable that this undesired effect can be considerably reduced by the application of the material with orthotropic properties as it enables tailoring the material's operating characteristics as desired, depending on a region. Such properties are possessed, among others, by fibrous composites whose strength properties and rigidity can be shaped as required, hence they can be used to produce structures with improved load carrying capacity [4][5][6][7]26]. This problem will be investigated in further research.…”

Section: Discussion Of the Numerical Resultsmentioning

confidence: 99%

Numerical analysis of compressed plates with a cut-out operating in the geometrically nonlinear range

Falkowicz¹,

Ferdynus²,

Dębski³

2015

Eksploatacja i Niezawodnosc - Maintenance and Reliability

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Article citation info: (*) Tekst artykułu w polskiej wersji językowej dostępny w elektronicznym wydaniu kwartalnika na stronie www.ein.org.pl IntroductionThin-walled load-carrying structures are characterized by high strength and rigidity as well as low weight. Given the above properties, these structures are widely applied not only in the aerospace and automotive sectors, but also in designs where low structure weight is crucial. A disadvantage of thin-walled structures is that they are prone to loss of stability under compressive or shearing loads [2, 3, 9, 13, 21-25, 28, 29]. Nonetheless, thin-walled structural elements can operate even after their stability loss provided that they do it in the elastic range [11,14,21,27]. These structures are particularly sensitive to geometric inaccuracies, which is critical regarding their use. For this reason, they must be precisely manufactured to prevent premature loss of stability. Uniform thin-walled plates are relatively cheap to produce, yet they can carry relatively low loads due to their low flexural rigidity. When subjected to compression, these plates lose stability even under small loads. With common methods for improving load capacity such as the use of stiffeners or ribs, the form of a structure is not only considerably modified, but its weight can increase, too. However, there is a way in which load capacity of thin-walled structures can be greatly improved while the structures themselves can be used as both carrying structures and elastic elements. This can be done by forcing these structures to operate in a higher buckling mode (flexural and torsional). To do so, it is necessary to make a cut-out in the plate and slightly displace the vertical zone in the opposite direction. This displacement will be realized in a special frame -so that the jump on basic mode was impossible. In this way, the plate acquires the desired characteristics, i.e. stable operation in the post-buckling range.Issues of the stability and post-buckling behaviors of plate structure with all sorts of holes was described in [19], where you can find a very comprehensive review of the literature on this issue. At that work as the author of the earliest elaboration, in numerical terms, is given Pennington Vanna [16], who as first considered the problem of the stability of elastic uniaxially compression plate with a cut-out. The article presents the results of FEM calculations and compared to the results of experimental studies. The earliest post-buckling behavior analysis of plate structures with cut-out are reported in [18]. A major contribution brings the works [15,17,20,30], where are considered the postcritical states and limited carrying capacity of this type of structures. Not encountered of research, where was investigated plate structures with cut-out and in which attempted to force of the higher flexural and torsional mode deformation of the structure.In the researched load-carrying structure, one can clearly distinguish a vertical zone where this thin-walled element undergoes com...

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Section: Discussion Of the Numerical Resultsmentioning

confidence: 99%

Numerical analysis of compressed plates with a cut-out operating in the geometrically nonlinear range

Falkowicz¹,

Ferdynus²,

Dębski³

2015

Eksploatacja i Niezawodnosc - Maintenance and Reliability

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“…They offer a solution to the problem of non-linear stability of the investigated thin-walled structures using experimental and numerical methods [15][16][17][18][19][20]. The investigations of critical and post-critical states as well as the damage of thin-walled composite columns are reported, for instance, in the works [6,7,14,15,[21][22][23][24][25][26][27][28], where the authors present different methods for describing the problem of nonlinear stability Fig. 1 Post-critical equilibrium paths of a plate without initial deflections and of a real structure and validate the developed numerical models in the experimental tests.…”

Section: Introductionmentioning

confidence: 99%

“…To this end it is necessary to use approximation methods which -based on the post-critical equilibrium paths of a real structure determined in the experiments -enable determination of the critical load. This problem was examined regarding structures made of isotropic materials, for instance, in the work [10,24], and with respect to composite structures in the works [5,7,27,28]. They do not offer, however, a complex procedure which would enable developing an unequivocal methodology for determining the experimental critical load.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Study of the Buckling of Composite Profiles with Open Cross Section under Axial Compression

et al. 2017

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The object of the research are short, thin-walled columns with an open top-hat cross section made of multilayer laminate. The walls of the investigated profiles are made of plate elements. The entire columns are subjected to uniform compression. A detailed analysis allowed us to determine critical forces and post-critical equilibrium paths. It is assumed that the columns are articulately supported on the edges forming their ends. The numerical investigation is performed by the finite element method. The study involves solving the problem of eigenvalue and the non-linear problem of stability of the structure. The numerical analysis is performed by the commercial simulation software ABAQUS®. The numerical results are then validated experimentally. In the discussed cases, it is assumed that the material operates within a linearly-elastic range, and the non-linearity of the FEM model is due to large displacements.

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“…The study was performed for the critical and weakly postcritical state to define the forces which cause the structure's loss of stability. There are many publications investigating the problem of critical state of thin-walled composite elements with respect to structure stability [[4]- [9], [19], [20], [25], [26], [30], [33]]. …”

Section: Introductionmentioning

confidence: 99%

Fem and Experimental Analysis of Thin-Walled Composite Elements Under Compression

Różyło

Wysmulski

Falkowicz

2017

International Journal of Applied Mechanics and Engineering

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Thin-walled steel elements in the form of openwork columns with variable geometrical parameters of holes were studied. The samples of thin-walled composite columns were modelled numerically. They were subjected to axial compression to examine their behavior in the critical and post-critical state. The numerical models were articulately supported on the upper and lower edges of the cross-section of the profiles. The numerical analysis was conducted only with respect to the non-linear stability of the structure. The FEM analysis was performed until the material achieved its yield stress. This was done to force the loss of stability by the structures. The numerical analysis was performed using the ABAQUS® software. The numerical analysis was performed only for the elastic range to ensure the operating stability of the tested thin-walled structures.

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On buckling collapse and failure analysis of thin-walled composite lipped-channel columns subjected to uniaxial compression

Cited by 55 publications

References 20 publications

Numerical analysis of compressed plates with a cut-out operating in the geometrically nonlinear range

Numerical analysis of compressed plates with a cut-out operating in the geometrically nonlinear range

Experimental and Numerical Study of the Buckling of Composite Profiles with Open Cross Section under Axial Compression

Fem and Experimental Analysis of Thin-Walled Composite Elements Under Compression

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