Flexural vibrations of elastic composite beams with interlayer slip

Adam, Christoph; Heuer, R.; Jeschko, A.

doi:10.1007/bf01177296

Cited by 59 publications

(23 citation statements)

References 14 publications

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“…Many analytical, numerical and experimental studies have been conducted in the literature to investigate the effect of this interlayer slip-induced partial composite interaction on the buckling behavior of delaminated beam-columns (Adam et al, 1997;Planinc et al, 2008;Kryzanowski et al, 2009;Battini et al, 2009;Planinc, 2010, 2011), and it was found that the developed interlayer slip in the delaminated layered structures has a significant effect on its critical buckling load. It should be mentioned that a linear bond slip constitutive law was often employed in most of the above mentioned studies to model the interlayer slip behavior.…”

Section: Introductionmentioning

confidence: 98%

Buckling of delaminated bi-layer beam-columns

Chen

Qiao

2011

International Journal of Solids and Structures

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a b s t r a c tAn improved analytical model is presented to analyze the delamination buckling of a bi-layer beam-column with a through-the-width delamination. Both the transverse shear deformation and local delamination tip deformations are taken into consideration, and two delaminated sub-layers as well as two substrates in the intact (un-delaminated) regions are modeled as individual Timoshenko beams. A deformable interface is introduced to establish the continuity condition between the two substrates in the intact regions. Consequently, a flexible joint is formed at the delamination tip, and it is different from the conventional rigid joint given in most of studies in the literature, in which the local delamination tip deformations are completely ignored. In contrast to the local delamination buckling in our previous study , the present model accounts for the global deformations of the intact region in the delaminated composite beam-column, thus capable of capturing the buckling mode shape transitions from the global, to global-local coexistent, and to local buckling for asymmetric delamination as the interface delamination increases. Good agreement of the present analytical solutions with the full 2-D elastic finite element analysis demonstrates the local deformation effects around the delamination tip and verifies the accuracy of the present model. Parametric studies are conducted to investigate the effects of loading eccentricity, delaminated sub-layer thickness ratio, and interface compliance on the critical buckling load for the delaminated composite beam-column. Transitions of buckling modes from the global to local delamination buckling are also disclosed as the thickness of one sub-layer reduces from the thick sublayer to a thin film. The developed delamination buckling solution facilitates the design analysis and optimization of laminated composite structures, and it can be used with confidence in buckling analysis of delaminated composite structures.

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Section: Introductionmentioning

confidence: 98%

Buckling of delaminated bi-layer beam-columns

Chen

Qiao

2011

International Journal of Solids and Structures

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“…Newmark's model was further developed to deal with the dynamic response of composite beams (e.g. [19][20][21][22]). Recently, Faella et al [8] presented an exact finite element model based on exact analytical expression of the stiffness matrix.…”

Section: Introductionmentioning

confidence: 99%

Exact finite element model for shear-deformable two-layer beams with discrete shear connection

Nguyen

Hjiaj

Guezouli

2011

Finite Elements in Analysis and Design

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“…Later, these different kinematics models have been used in the dynamical framework, too, the former for example in [2,[6][7][8] and the latter for example in [8][9][10][11]. Actually, the free dynamics behaviour of two-layer beams has been largely studied in the literature [12][13][14][15][16][17][18][19][20], where numerical [21,22], analytical/theoretical [8,23] as well as experimental [8,11,24,25] studies can be found.…”

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confidence: 98%