Damage analysis of interlaminar fracture specimens

Allix, Olivier; Ladevèze, Pierre; Corigliano, Alberto

doi:10.1016/0263-8223(95)00002-x

Cited by 254 publications

(167 citation statements)

References 17 publications

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“…Their approach suffered from neglecting adhesive as a component during modeling; hence, the properties of numerical crack are representative of both the crack and material, and not exclusively the crack itself. Further, Allix et al [21] adopted different values of high initial stiffness; however, the focus of their study was on post crack-initiation behaviour in single modes. Additionally, Li et al [22] indicated that the cohesive law can be utilised to predict the transition between failure of composite and interface in mode-I.…”

Section: Relevance To Czmmentioning

confidence: 99%

Controlled failure warning and mitigation of prematurely failing beam through adhesive

Khan

Silberschmidt

El-Rimawi

2017

Composite Structures

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In plated beam, an adhesive is used primarily to adhere the external plate to the concrete beam to achieve a composite action. Even though some work has been found to indicate that the choice of softer adhesive increased the capacity of beam (MacDonald & Calder, 1982), relatively stiffer adhesives have been largely assumed to provide better strengthening. Largely, due to the fact that adhesive has been widely consid-ered as an insignificant structural component towards the capacity of a composite beam; material capabilities (if not structural) of adhesive have also been ignored for further research towards studying its effects on premature failures (particularly debonding). Under mixedmode loading, the adoption through discretisation of Cohesive Zone Model as a bulk material (indicative of adhesive component) and to simulate interfacial cracks is shown here to achieve the objectives. The outcomes of the research indicate the critical material properties of adhesive in all directions, such as stiffness, strength and crack energy, play crucial role in controlling the behaviour of modes of failure. Further, based on this study, recommenda-tions have been proposed on the choice of adhesive type at different locations of plated beam so as to capture a failure warning and avoid catastrophic failure.

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Section: Relevance To Czmmentioning

confidence: 99%

Controlled failure warning and mitigation of prematurely failing beam through adhesive

Khan

Silberschmidt

El-Rimawi

2017

Composite Structures

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“…The advantages of cohesive zone models are their simplicity and the unification of crack initiation and growth within one model. Moreover, cohesive zone formulations can also be easily implemented in finite element codes using decohesion elements [17]- [25]. Although the cohesive damage models cannot be considered non-local damage models [26], they allow a mesh-independent representation of material softening, provided that the mesh is sufficiently refined.…”

Section: Introductionmentioning

confidence: 99%

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

Turón

Camanho

Costa

et al. 2006

Mechanics of Materials

741

437

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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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“…Corigliano (1993), Allix and Corigliano (1996), Allix et al (1995), Ladevèze et al (1998), Schellekens and Borst (1993), Chaboche et al (1997), Bolzon and Corigliano (1997), Chen et al (1999), Mi et al (1998), Alfano and Crisfield (2001) employed the continuum damage mechanics approach to model the degradation of non-coherent, cohesive interface elements. Cazes et al (2009), Ijaz et al (2014 provided a formulation for a non-local damage-type cohesive zone model.…”

Section: State-of-the-art Review Of Interface Elasticitymentioning

confidence: 99%

Coherent Energetic Interfaces Accounting for In-Plane Degradation

Esmaeili¹,

Javili²,

Steinmann³

2017

Defect and Material Mechanics

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Interfaces can play a dominant role in the overall response of a body. The importance of interfaces is particularly appreciated at small length scales due to large area to volume ratios. From the mechanical point of view, this scale dependent characteristic can be captured by endowing a coherent interface with its own elastic resistance as proposed by the interface elasticity theory. This theory proves to be an extremely powerful tool to explain size effects and to predict the behavior of nano-materials. To date, interface elasticity theory only accounts for the elastic response of coherent interfaces and obviously lacks an explanation for inelastic interface behavior such as damage or plasticity. The objective of this contribution is to extend interface elasticity theory to account for damage of coherent interfaces. To this end, a thermodynamically consistent interface elasticity theory with damage is proposed. A local damage model for the interface is presented and is extended towards a non-local damage model. The non-linear governing equations and the weak forms A. Esmaeili · P. Steinmann (B) Chair of Applied Mechanics, University of Erlangen-Nuremberg, Egerlandstrasse 5, 91058 Erlangen, Germany e-mail: paul.steinmann@ltm.uni-erlangen.de A. Esmaeili e-mail: ali.esmaeili@ltm.uni-erlangen.de A. Javili Department of Mechanical Engineering, Bilkent University, 06800 Ankara, Turkey e-mail: ajavili@bilkent.edu.tr thereof are derived. The numerical implementation is carried out using the finite element method and consistent tangents are listed. The computational algorithms are given in detail. Finally, a series of numerical examples is studied to provide further insight into the problem and to carefully elucidate key features of the proposed theory.

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Damage analysis of interlaminar fracture specimens

Cited by 254 publications

References 17 publications

Controlled failure warning and mitigation of prematurely failing beam through adhesive

Controlled failure warning and mitigation of prematurely failing beam through adhesive

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

Coherent Energetic Interfaces Accounting for In-Plane Degradation

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