The onset of delamination at stress-free edges in angle-ply laminates — analysis of two criteria

Leguillon, Dominique; Marion, Guillaume; Harry, R.; Lécuyer, F.

doi:10.1016/s0266-3538(00)00105-6

Cited by 28 publications

(12 citation statements)

References 6 publications

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“…As mention above the present model provides useful finite stress on the edge which can be used directly in a limit stress criterion as shown in [37]. The present finite interfacial stresses are in this sense equivalent to the averages of the 3D FE's stresses over a characteristic distance from the edge as used in several delamination onset investigations [39,40].…”

Section: Accepted Manuscriptmentioning

confidence: 92%

Finite element analysis of free-edge stresses in composite laminates under mechanical an thermal loading

Nguyen

Caron²

2009

Composites Science and Technology

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To cite this version:Viet-Tung Nguyen, Jean-François Caron. Finite element analysis of free-edge stresses in composite laminates under mechanical an thermal loading. Composites Science and Technology, Elsevier, 2009, 69 (1), pp.40. <10.1016/j.compscitech.2007.10.055>. F i n i t e e l e m e n t a n a l y s i s o f f r e e -e d g e s t r e s s e s i n c o m p o s i t e l a m i n a t e s u n d e r m e -c h a n i c a l a n t h e r m a l l o a d i n g V i e t -T u n g N g u y e n , J e a n -F r a n c o i s C a r o n P I I : S 0 2 6 Accepted Manuscript ACCEPTED MANUSCRIPTFinite element analysis of free-edge stresses in

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Section: Accepted Manuscriptmentioning

confidence: 92%

Finite element analysis of free-edge stresses in composite laminates under mechanical an thermal loading

Nguyen

Caron²

2009

Composites Science and Technology

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“…Since the specimens are stressed in tension after impact (to reproduce real loading) fibre failure must be favoured, and the delamination zone limited. This also limits the interaction between delamination and free edge effects [13]. In order to restrict the damage to a zone close to the impact point, a special device gripped the specimen: Fig.…”

Section: Specimen Mounting Devicementioning

confidence: 99%

Damage tolerance of impacted curved panels

Ballère

Viot

Lataillade

et al. 2009

International Journal of Impact Engineering

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is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. b s t r a c tThe final aim of this study is to evaluate the influence of impact damage on the residual strength of carbon/epoxy vessels stressed by internal pressure. An intermediate stage determined the residual behaviour of pre-impacted curved panels loaded in tension. Curved panels were impacted, reproducing the damage types observed in impacted vessels filled with propellant. Delamination damage was assessed by ultrasonics and optical microscopy used to observe intra-laminar mechanisms. Tension after impact (TAI) tests quantified the residual behaviour. An experimental design was used as an alternative to the complex analytical modelling of dynamic damage mechanisms. With this original technique, empirical relationships were established, linking impact parameters to residual properties. The force to failure was found to vary in a bi-linear manner with impact energy. Below a specific level of impact energy corresponding to failure in 4/7 of the plies, there is no significant reduction in the residual strength. The composite Young's modulus decreased linearly with impact energy.

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“…Therefore, post-processing is necessarily used. For example, integrations on areas defined by the operator can provide converging values, independent of the mesh [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

A layerwise finite element for multilayers with imperfect interfaces

Duong¹,

Diaz²,

Chataigner³

et al. 2011

Composite Structures

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This article is aimed at proposing a new development of a layer-wise 2D finite-element method for multilayers considering the laminated plate as a superposition of Reissner plates coupled by interfacial stresses. Here, despite the 2D description of the laminates, the interfaces show a particular behavior, elastic or elastoplastic (Von-Mises criterion). The finite element formulation is derived and an eight-node multiparticle element is detailed. The application example of a double lap joint with an elastoplastic adhesive is then considered. The adhesive layer is modeled as an interface. The loading scheme is a load-unload-load one. Interface shear and normal stresses are compared to 3D finite element results. A good agreement between both techniques is observed, particularly for the prediction of the history of the slip between the two adherends and the plastic strains in the adhesive.

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The onset of delamination at stress-free edges in angle-ply laminates — analysis of two criteria

Cited by 28 publications

References 6 publications

Finite element analysis of free-edge stresses in composite laminates under mechanical an thermal loading

Finite element analysis of free-edge stresses in composite laminates under mechanical an thermal loading

Damage tolerance of impacted curved panels

A layerwise finite element for multilayers with imperfect interfaces

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