Numerical Simulation of Mixed-Mode Progressive Delamination in Composite Materials

Camanho, P.P.; Dávila, Carlos G.; Moura, M.F.S.F. de

doi:10.1177/0021998303034505

Cited by 1,410 publications

(875 citation statements)

References 43 publications

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“…The surfaces obtained by the different criterion are represented in Figure 6. The values predicted by the new criterion are very close to Ye's criterion, that has been successfully used in previous investigations [24].…”

Section: Initial Damage Surfacesupporting

confidence: 81%

“…However, Camanho et al [24] have shown that the expression proposed by Benzeggagh and Kenane [36] for the critical energy release rate for a mixedmode ratio is more accurate for epoxy and PEEK composites. The expression proposed by Benzeggagh and Kenane for the critical energy release rate G c is:…”

Section: Propagation Criterionmentioning

confidence: 99%

“…The law proposed here is a bilinear relation between the tractions and the displacement jumps [21], [24], [45]. The bilinear law is the most commonly used cohesive law due to its simplicity.…”

Section: Damage Evolution Lawmentioning

confidence: 99%

“…However, the surfaces surrounding the potential delamination Γ d are discretized with decohesion elements [24]. The discretized formulation is divided in the two domains considering no formal coupling between the continuous and the discontinuous parts of the deformation in the expression for the free energy of the interface [53].…”

Section: Formulation Of the Constitutive Tangent Tensormentioning

confidence: 99%

“…There are some models in the literature that can be used under constant mixed-mode conditions [21], [23]- [24], [30]- [35].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

A damage model for the simulation of delamination in advanced composites under variable-mode loading

Turón

Camanho

Costa

et al. 2006

Mechanics of Materials

781

438

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A thermodynamically consistent damage model is proposed for the simulation of progressive delamination in composite materials under variable-mode ratio. The model is formulated in the context of Damage Mechanics. A novel constitutive equation is developed to model the initiation and propagation of delamination. A delamination initiation criterion is proposed to assure that the formulation can account for changes in the loading mode in a thermodynamically consistent way.The formulation accounts for crack closure effects to avoid interfacial penetration of two adjacent layers after complete decohesion. The model is implemented in a finite element formulation, and the numerical predictions are compared with experimental results obtained in both composite test specimens and structural components.

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Section: Initial Damage Surfacesupporting

confidence: 81%

Section: Propagation Criterionmentioning

confidence: 99%

Section: Damage Evolution Lawmentioning

confidence: 99%

Section: Formulation Of the Constitutive Tangent Tensormentioning

confidence: 99%

“…There are some models in the literature that can be used under constant mixed-mode conditions [21], [23]- [24], [30]- [35].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A damage model for the simulation of delamination in advanced composites under variable-mode loading

Turón

Camanho

Costa

et al. 2006

Mechanics of Materials

781

438

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Models for Delamination

König¹,

D′Ottavio²

2010

Encyclopedia of Aerospace Engineering

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The chapter reviews some aspects of the broad and complex problem of delamination in composites. The focus is put on computational models for delamination predictions in the framework of a damage tolerance design. Both delamination initiation and its propagation under quasi‐static and cyclic loading are addressed, and their simulation by means of the Finite Element Method (FEM) is discussed. However, dynamic delamination propagation under impact loads, as well as the prediction of the effect of delamination on the ultimate failure, is not considered in this chapter. Basically, two modelling approaches are reviewed, namely Linear Elastic Fracture Mechanics (LEFM) in the form of the Virtual Crack Closure Technique (VCCT) and Continuum Damage Mechanics (CDM) applied to interface problems, that is, Cohesive Zone Models. Both approaches have recently been implemented in commercially available FE software. A summary of the respective peculiarities and limitations is presented. The significance of 2D laminated plate/shell elements that ensure the capturing of relevant through‐thickness effects is emphasized.

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