Interaction of damage failure and post-buckling behaviour of composite plates with cut-outs by progressive damage modelling

Labeas, G.; Belesis, S.; Stamatelos, D.G.

doi:10.1016/j.compositesb.2007.01.007

Cited by 37 publications

(12 citation statements)

References 14 publications

(30 reference statements)

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“…Several material degradation methods can be found in the literature [21][22][23][24]. Existing methods for damage modeling can be separated into two categories; methods that rely on ply discount techniques and methods that are based on continuum damage mechanics.…”

Section: Failure Methodologymentioning

confidence: 99%

“…Most previous studies have mainly focused on the progressive failure analysis of composite plates with cut-outs [21][22][23][24], since the stress concentrations developed at the edge of the cut-outs lead to guided failure paths, offering a well defined case for benchmarking and validation of the developed progressive failure models. To the authors' knowledge, progressive failure analysis of composite stiffened panels has not been sufficiently studied.…”

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confidence: 99%

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Post Buckling Progressive Failure Analysis of Composite Laminated Stiffened Panels

Anyfantis

Tsouvalis

2011

Appl Compos Mater

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The present work deals with the numerical prediction of the post buckling progressive and final failure response of stiffened composite panels based on structural nonlinear finite element methods. For this purpose, a progressive failure model (PFM) is developed and applied to predict the behaviour of an experimentally tested blade-stiffened panel found in the literature. Failure initiation and propagation is calculated, owing to the accumulation of the intralaminar failure modes induced in fibre reinforced composite materials. Hashin failure criteria have been employed in order to address the fiber and matrix failure modes in compression and tension. On the other hand, the Tsai-Wu failure criterion has been utilized for addressing shear failure. Failure detection is followed with the introduction of corresponding material degradation rules depending on the individual failure mechanisms. Failure initiation and failure propagation as well as the post buckling ultimate attained load have been numerically evaluated. Final failure behaviour of the simulated stiffened panel is due to sudden global failure, as concluded from comparisons between numerical and experimental results being in good agreement.

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Section: Failure Methodologymentioning

confidence: 99%

mentioning

confidence: 99%

Post Buckling Progressive Failure Analysis of Composite Laminated Stiffened Panels

Anyfantis

Tsouvalis

2011

Appl Compos Mater

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“…PDM methodology is well-established and has been successfully applied for the prediction of damage initiation and evolution of structures made of composite materials (e.g., Gotsis et al, 1998;Kermanidis et al, 2000;Tserpes et al, 2001Tserpes et al, , 2002Tserpes et al, , 2004Labeas et al, 2008;Haj-Ali, 2009;Ju et al, 2009;Zhang and Wang, 2010). However, its application, according to authors' best knowledge, has been limited at rather small-scale structures, including simple geometry specimens, as well as more complicated bolted and bonded joints.…”

Section: Description Of Specific Problems Arising From Pdm Application In Large-scale Structuresmentioning

confidence: 99%

“…The methodology of progressive damage modeling (PDM) has been widely applied in the prediction of damage development in various types of composite structures (e.g., Gotsis et al, 1998;Kermanidis et al, 2000;Tserpes et al, 2001Tserpes et al, , 2002Tserpes et al, , 2004Labeas et al, 2008;Tay et al, 2008;Haj-Ali, 2009;Ju et al, 2009;Zhang and Wang, 2010). However, the application of PDM in large-scale structures, which require multi-million degrees of freedom (DOF) numerical models for their stress analysis, has specific significant problems.…”

Section: Introductionmentioning

confidence: 99%

Adaptative Progressive Damage Modeling for Large-scale Composite Structures

Labeas

Belesis

Diamantakos

et al. 2011

International Journal of Damage Mechanics

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Progressive damage modeling (PDM) is a well-established methodology for the prediction of damage initiation and evolution in composite structures. However, as conventional PDM methodology involves a large post-processing procedure, it is impractical for application in large-scale structures due to the high computational cost it requires. In this study, the local character of nonlinearity, due to the scale of the damage topology compared to the size of the entire structure, is exploited to propose proper modifications in the 'classical' PDM methodology. Specifically, the sub-modeling technique principles are combined and integrated in the PDM methodology and the appropriate modifications required are discussed. Furthermore, two damage prediction indices, which are related to the criticality of damage state at specific sub-areas (material layers) of the structure are introduced, in order to achieve significant reductions of the required computational time. Both the improvements make the application of PDM in large-scale composite structures practically feasible; this is demonstrated in the case of a generic composite shear joint whose numerical model comprises over a million degrees of freedom.

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“…Recently, the progressive damage method has increasingly been used to predict the failure of composite structures [Sane, Padole and Uddanwadiker (2018)], and many PDMs have been proposed in published papers. Some use sudden degradation damage models, which are implemented by decreasing the damaged material properties to zero or to a portion of the initial values, to describe the mechanical properties of the damaged materials [Labeas, Belesis and Stamatelos (2008)]. Clearly, the sudden degradation damage models divide the materials into two states: undamaged and completely damaged.…”

mentioning

confidence: 99%

Model of CEL for 3D Elements in PDMs of Unidirectional Composite Structures

Qin¹,

Zhao²,

Xu³

et al. 2019

Computer Modeling in Engineering &Amp; Sciences

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Progressive damage models (PDMs) have been increasingly used to simulate the failure process of composite material structures. To accurately simulate the damage in each ply, 3D PDMs of composite materials have received more attention recently. A characteristic element length (CEL), which is an important dimensional parameter of PDMs for composite materials, is quite difficult to obtain for 3D elements, especially considering the crack directions during damage propagation. In this paper, CEL models for 3D elements in PDMs of unidirectional composite structures are presented, and their approximate formulae are deduced. The damage in unidirectional composite materials can be divided into fiber cracks and inter-fiber cracks. The fiber crack and inter-fiber crack directions are considered in the CEL derivations, and thus, the CELs of 3D elements that have various damage modes and damage directions could be obtained relatively precisely. Static tensile and compressive tests of open-hole laminates were conducted, and the corresponding numerical analyses by the progressive damage method, including the proposed CEL models and those models from the literature, were performed. The numerical results are in good agreement with the experimental results, which proves the fidelity and effectiveness of the proposed CEL models. In addition, the proposed CEL models have better performance in improving the mesh independence of the numerical models.

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Interaction of damage failure and post-buckling behaviour of composite plates with cut-outs by progressive damage modelling

Cited by 37 publications

References 14 publications

Post Buckling Progressive Failure Analysis of Composite Laminated Stiffened Panels

Post Buckling Progressive Failure Analysis of Composite Laminated Stiffened Panels

Adaptative Progressive Damage Modeling for Large-scale Composite Structures

Model of CEL for 3D Elements in PDMs of Unidirectional Composite Structures

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