Numerical analysis of the DCB test configuration applicability to mechanically coupled Fiber Reinforced Laminated Composite beams

Samborski, Sylwester

doi:10.1016/j.compstruct.2016.05.060

Cited by 64 publications

(38 citation statements)

References 33 publications

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“…Due to their high load-carrying capacity, composite structures are most often subjected to axial compression processes. As shown by Samborski [11,12], determination of resistance to damage for laminates can be a challenge, especially in the case of non-symmetric layups. However, a proper mode separation procedures supported with the finite element simulations can precisely foresee and track the interlaminar defect propagation [13].…”

Section: Introductionmentioning

confidence: 99%

Progressive Failure Analysis of Thin-Walled Composite Structures Verified Experimentally

et al. 2020

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The subject of the presented research was a thin-walled composite column made of CFRP (carbon-epoxy laminate). The test sample had a top-hat cross-section with a symmetrical arrangement of laminate layers [90/−45/45/0]s. The composite structure was subjected to the process of axial compression. Experimental and numerical tests for the loss of stability and load-carrying capacity of the composite construction were carried out. The numerical buckling analysis was carried out based on the minimum potential energy criterion (based on the solution of an eigenvalue problem). The study of loss of load-carrying capacity was performed on the basis of a progressive failure analysis, solving the problem of non-linear stability based on Newton-Raphson’s incremental iterative method. Numerical results of critical and post-critical state were confronted with experimental research in order to estimate the vulnerable areas of the structure, showing areas prone to damage of the material.

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Section: Introductionmentioning

confidence: 99%

Progressive Failure Analysis of Thin-Walled Composite Structures Verified Experimentally

et al. 2020

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“…Three laminated specimens with different stacking sequences were ideally built as follows. We started from a typical carbon-epoxy fiber-reinforced lamina of thickness t p = 0.2 mm and elastic moduli shown in Table 1 [61]. Based on this, three stacking sequences were designed corresponding to uni-directional (UD), cross-ply (CP), and multi-directional (MD) sublaminates (Table 2).…”

Section: Examplesmentioning

confidence: 99%

An Elastic Interface Model for the Delamination of Bending-Extension Coupled Laminates

et al. 2019

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The paper addresses the problem of an interfacial crack in a multi-directional laminated beam with possible bending-extension coupling. A crack-tip element is considered as an assemblage of two sublaminates connected by an elastic-brittle interface of negligible thickness. Each sublaminate is modeled as an extensible, flexible, and shear-deformable laminated beam. The mathematical problem is reduced to a set of two differential equations in the interfacial stresses. Explicit expressions are derived for the internal forces, strain measures, and generalized displacements in the sublaminates. Then, the energy release rate and its Mode I and Mode II contributions are evaluated. As an example, the model is applied to the analysis of the double cantilever beam test with both symmetric and asymmetric laminated specimens.

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“…The debonded region of the specimen is modelled by a real gap of h 1 100 along the damaged interface. The contact and friction conditions similar to (5) and (6) are introduced between the faces of finite elements along the pre-cracked interface. The contact behaviour under the assumptions of small displacement kinematics was assumed to be governed by the 'hard contact' model with frictionless conditions [26].…”

Section: Numerical Resultsmentioning

confidence: 99%

“…The interface strength can be quantified using the concept of interface fracture toughness [4]. In this respect, fracture specimens are used to supply useful information regarding the fracture resistance of the material [5,6]. The near-tip fracture parameters such stress intensity factors or strain energy release rates controlling the fracture event can be inferred from the specimens through experimental, analytical or numerical methods.…”

Section: Introductionmentioning

confidence: 99%

Influence of Dynamic Loading on Fracture Behaviour of DCB Sandwich Specimen

2019

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Numerical simulations of dynamic fracture behaviour of a double cantilever sandwich beam subjected to uneven bending moments in plane conditions are carried out using the dynamic finite element analyses with the ABAQUSTM code. The strain energy release rate was evaluated by means of the finite element model developed within the two-dimensional (2-D) linear elastodynamic theory. This demonstrates the capability and the reliability of the finite element modelling as an extremely useful numerical tool for solving dynamic fracture mechanics problems. Also, the dynamic behaviour of fracture parameters and interface crack progression is discussed.

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Numerical analysis of the DCB test configuration applicability to mechanically coupled Fiber Reinforced Laminated Composite beams

Cited by 64 publications

References 33 publications

Progressive Failure Analysis of Thin-Walled Composite Structures Verified Experimentally

Progressive Failure Analysis of Thin-Walled Composite Structures Verified Experimentally

An Elastic Interface Model for the Delamination of Bending-Extension Coupled Laminates

Influence of Dynamic Loading on Fracture Behaviour of DCB Sandwich Specimen

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