Damage and failure in carbon/epoxy filament wound composite tubes under external pressure: Experimental and numerical approaches

Almeida, José Humberto S.; Ribeiro, Marcelo Leite; Amico, Sandro Campos

doi:10.1016/j.matdes.2016.02.054

Cited by 96 publications

(35 citation statements)

References 26 publications

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“…The model has shown good potentiality by predicting progressive failure when loading has predominating in-plane stresses. Some application can be found in literature like a 3-point bending simulation of flat filament wound laminates [12], optimization of composite stacking sequence [13], hydrostatic external pressure of composite tubes [14], and radial compression [15].…”

Section: Intralaminar Modelmentioning

confidence: 99%

A Delamination Propagation Model for Fiber Reinforced Laminated Composite Materials

Aveiga

Ribeiro

2018

Mathematical Problems in Engineering

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The employment of composite materials in the aerospace industry has been gradually considered due to the fundamental lightweight and strength characteristics that this type of materials has. The science material and technological progress reached matched perfectly with the requirements for high-performance materials in aircraft and aerospace structures; thus, the development of primary structure elements applying composite materials became something very convenient. It is extremely important to pay attention to the failure modes that influence composite materials performances, since these failures lead to a loss of stiffness and strength of the laminate. Delamination is a failure mode present in most of the damaged structures and can be ruinous, considering that the evolution of interlaminar defects can carry the structure to a total failure followed by its collapse. The present work aims at the development of a delamination propagation model to estimate a progressive interlaminar delamination failure in laminated composite materials and to allow the prediction of material's degradation due to delamination phenomenon. Experimental data, available at literature, was considered to determine some model parameters, like the strain energy release rate, using GFRPs laminated composites. This new delamination propagation model was implemented as subroutines in FORTRAN language (UMATUser Material Subroutine) with formulations based on the Fracture Mechanics and Continuum Damage Mechanics. Finally, the UMAT subroutine was complemented with an intralaminar model and compiled beside the commercial Finite Element (FE) software ABAQUS6.

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Section: Intralaminar Modelmentioning

confidence: 99%

A Delamination Propagation Model for Fiber Reinforced Laminated Composite Materials

Aveiga

Ribeiro

2018

Mathematical Problems in Engineering

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“…The unidirectional ply elastic properties of this material were also characterized [7] from flat coupons produced by filament winding. As already commented, these material properties may differ from those obtained when the towpreg is wound over a cylindrical mandrel.…”

Section: Materials Properties Scalingmentioning

confidence: 99%

Composite structural behaviour prediction with the surrogate model and trace-based approach

Gerhardt¹,

Marczak²,

Amico³

2018

Proceedings of the 4th Brazilian Conference on Composite Materials

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An approach for the prediction of a composite tube structural behavior is presented. An estimate of the elastic properties of the material is accessed by the development of a knowledge-based surrogate model and the use of a trace-design approach, which is compared with experimental tests. The estimate is applied to a finite element model simulation for buckling analysis using both linear and non-linear methods. Buckling simulation results are then compared with the result of an experimental hydrostatic pressure test. It is demonstrated that this methodology can be a valuable tool in the early stages of a structural design.

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“…In addition, there are many scientific contributions, experimental, numerical and analytical, which approach delamination problems in laminated composites, and they are mostly related to macroscale analyses in order to explain the mechanical behavior of the structure. This can be observed in [8][9][10][11][12][13], where the authors presented experiments and/or three-dimensional finite element models for static and dynamic analyses of internal delamination in multilayer composites. Delamination buckling and growth in slender composite laminates using a FEM based on the cohesive element were investigated successfully, as well [14,15].…”

Section: Introductionmentioning

confidence: 99%

Delamination influence on elastic properties of laminated composites

et al. 2018

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The present work aims to predict the behavior of effective elastic properties for laminated composites, considering localized damage in the interface between two layers. In practical terms, the damage in the adhesion, which influences the effective elastic properties of a laminate, is evaluated like a delamination between adjacent layers. Thus, the effective properties of laminated composites with different delamination extensions are calculated via finite element method and two-scale asymptotic homogenization method. It is investigated how the properties of the laminated composites are affected by the delamination extension and the thickness of the interface between layers. It is possible to conclude that the effective coefficient values decrease as the damage extension increases due to the fact that the delamination area increases. Besides, for all effective coefficients, except the effective coefficients C * 12 , C * 13 , and C * 23 , in the case without delamination, the coefficients decrease as the adhesive region thickness increases, and almost all coefficients decrease for complete separation of the interface. Numerical and analytical results are compared in order to show the potentialities and limitations of the proposed approaches. Finally, a numerical approach is used to simulate a specific case, where the interface is considered a functionally graded material.

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Damage and failure in carbon/epoxy filament wound composite tubes under external pressure: Experimental and numerical approaches

Cited by 96 publications

References 26 publications

A Delamination Propagation Model for Fiber Reinforced Laminated Composite Materials

A Delamination Propagation Model for Fiber Reinforced Laminated Composite Materials

Composite structural behaviour prediction with the surrogate model and trace-based approach

Delamination influence on elastic properties of laminated composites

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