Mechanics and fracture of crack tip deformable bi-material interface

Qiao, Pizhong; Wang, Jialai

doi:10.1016/j.ijsolstr.2004.06.006

Cited by 102 publications

(78 citation statements)

References 39 publications

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“…Furthermore, they found an interaction between shear forces and normal stresses coming from axial forces and bending moments. Qiao and Wang [31] determined an analytical solution for a bilayer beam with an elastic interface. They computed the energy release rate through the J-integral [48] and determined the mode-mixity angle via an adaptation of Suo and Hutchinson's method [17].…”

Section: Elastic-interface Modelsmentioning

confidence: 99%

“…Besides the adoption of a more or less refined structural theory for the sublaminates, the connection between them has to be suitably described. To this aim, models of growing complexity can be chosen, ranging from rigid connections [15][16][17][18][19][20][21][22][23][24] to elastic interfaces [25][26][27][28][29][30][31][32][33][34][35][36][37][38] and cohesive zone models [39][40][41][42][43][44][45][46][47]. This choice is relevant not only for the accurate prediction of the laminate structural response -e.g.…”

Section: Introductionmentioning

confidence: 99%

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The Effects of Shear on Mode II Delamination

Valvo

2018

Frattura Ed Integrità Strutturale

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ABSTRACT. The paper focuses on the effects of shear deformation and shear forces on the mode II contribution to the energy release rate in delaminated beams. A critical review of the relevant literature is presented, starting from the end-notched flexure test as the prototype of delaminated laminates subjected to pure mode II fracture. Several models of the literature are recalled from simple beam theory to more refined models. The role of first-order shear deformation in line with the Timoshenko beam theory is investigated as distinct from the local crack-tip deformation related to the shear modulus of the material. Then, attention is moved on to a general delaminated beam with an arbitrarily located through-the-width delamination, subjected to mixedmode fracture. Several fracture mode partition methods of the literature are reviewed with specific attention on the effects of shear on the mode II contribution to the energy release rate.KEYWORDS. Delamination; Mixed-mode fracture; Mode II fracture; Beam theory; Shear deformation; End-notched flexure test.Citation: Valvo, P.S., The effects of shear on Mode II delamination: a critical review,

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Section: Elastic-interface Modelsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Effects of Shear on Mode II Delamination

Valvo

2018

Frattura Ed Integrità Strutturale

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“…[51][52][53][54] In such cases, the cracks may kink in-and-out of interfaces, depending on the prevailing crack driving forces and mode mixities. 25,52,55,56 Such kinking may also FIG.…”

Section: E Implicationsmentioning

confidence: 99%

Cold welding of organic light emitting diode: Interfacial and contact models

et al. 2016

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This paper presents the results of an analytical and computational study of the contacts and interfacial fracture associated with the cold welding of Organic Light Emitting diodes (OLEDs). The effects of impurities (within the possible interfaces) are explored for contacts and interfacial fracture between layers that are relevant to model OLEDs. The models are used to study the effects of adhesion, pressure, thin film layer thickness and dust particle modulus (between the contacting surfaces) on contact profiles around impurities between cold-welded thin films. The lift-off stage of thin films (during cold welding) is then modeled as an interfacial fracture process. A combination of adhesion and interfacial fracture theories is used to provide new insights for the design of improved contact and interfacial separation during cold welding. The implications of the results are discussed for the design and fabrication of cold welded OLED structures.

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“…shear compliances, see e.g. [8,41,45,46]), it is based on an entirely exact formulation including the material law of orthotropic solids.…”

Section: Calculation Of the J-integralmentioning

confidence: 99%

Analysis of classical and first-order shear deformable cracked orthotropic plates

Szekrényes

2013

Journal of Composite Materials

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The Kirchhoff and Mindlin plate theories are applied in this study to calculate the stresses and the energy release rates in delaminated orthotropic composite plates. A novel double-plate system is developed with the imposition of the kinematic continuity constraints in the interface plane. The governing equations of the system were derived in both cases. As a demonstrative example a simply-supported plate subjected to a point force was analyzed using Lévy plate formulation and the problem was solved by a state-space model. The distribution of the stress resultants and the interlaminar stresses in the uncracked part were also determined. Moreover, the distributions of the mode-II and mode-III energy release rates along the crack front were calculated by the J-integral. The 3D finite element model of the plate was created providing reference data for the analytical model. The results show that the displacement and stress fields obtained from the Kirchhoff and Mindlin theories are quite similar, but in the case of the energy release rates, transverse shear effect is necessary to consider to obtain reasonably good agreement between the analytical and numerical results.

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Mechanics and fracture of crack tip deformable bi-material interface

Cited by 102 publications

References 39 publications

The Effects of Shear on Mode II Delamination

The Effects of Shear on Mode II Delamination

Cold welding of organic light emitting diode: Interfacial and contact models

Analysis of classical and first-order shear deformable cracked orthotropic plates

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