Cohesive modeling of dewetting in particulate composites: micromechanics vs. multiscale finite element analysis

Inglis, Helen M.; Geubelle, Philippe H.; Matouš, Karel; Tan, Henry; Huang, Yonggang

doi:10.1016/j.mechmat.2006.08.008

Cited by 62 publications

(35 citation statements)

References 22 publications

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“…Inglis et al [8] have compared the mesoscale responses of plane-strain composites obtained with a mean-field homogenization scheme accounting for debonding and with an asymptotic expansion from finite element cells. In the latter, RVEs with extrinsic cohesive laws at fiber-matrix interfaces are studied.…”

Section: Resultsmentioning

confidence: 99%

“…This CZM is attractive as it can easily be implemented, in particular when the crack path is well defined, e.g. for debonding [6,7,8], material interface decohesion [9,10], structure interface decohesion [11,12,13], composite delamination [14,12,15,16] etc ... Studies have also been conducted to determine the shape of the TSL under mixed modes loading [17,18] or to account for ductility of materials [19]. The macroscale TSL for crystals can also be deduced from atomistic considerations, see [20] e.g.…”

Section: Introductionmentioning

confidence: 99%

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A micro–meso-model of intra-laminar fracture in fiber-reinforced composites based on a discontinuous Galerkin/cohesive zone method

Tjahjanto

Becker

et al. 2013

Engineering Fracture Mechanics

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The recently developed hybrid discontinuous Galerkin/extrinsic cohesive law framework is extended to the study of intra-laminar fracture of composite materials. Toward this end, micro-volumes of different sizes are studied. The method captures the debonding process, which is herein proposed to be assimilated to a damaging process, before the strain softening onset, and the density of dissipated energy resulting from the damage (debonding) remains the same for the different studied cell sizes. Finally, during the strain softening phase a micro-crack initiates and propagates in agreement with experimental observations. We thus extract a resulting mesoscale cohesive law, which is independent on the cell sizes, using literature methods.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A micro–meso-model of intra-laminar fracture in fiber-reinforced composites based on a discontinuous Galerkin/cohesive zone method

Tjahjanto

Becker

et al. 2013

Engineering Fracture Mechanics

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“…They considered both a single particle microstructure and a microstructure with a random distribution of monodisperse particles. Inglis et al [24] used two-dimensional models to investigate debonding in polydisperse microstructures containing a high concentration of particulates. Brassart et al [16] used the same numerical framework as Inglis et al to capture the debonding of rigid inclusions under axisymmetric tension.…”

Section: Related Workmentioning

confidence: 99%

Computational homogenization of the debonding of particle reinforced composites: The role of interphases in interfaces

Spring

Paulino

2015

Computational Materials Science

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“…In order to capture the interfacial debonding behavior of the composite, the interphase region between silicone and phosphor is modeled with cohesive law. A progressive damage and failure mechanics model is introduced to simulate the exponential traction‐separation behavior of the interphase region …”

Section: Numerical Simulationmentioning

confidence: 99%

Phosphor settling induced mechanical degradation of silicone/phosphor composite in light emitting diode packages

Chen

Wang

Chen

et al. 2015

J of Applied Polymer Sci

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Silicone/phosphor composite is a functional material used in light emitting diode (LED) packages. In this article, effect of phosphor settling on mechanical properties and microstructure of phosphor/silicone composite is investigated experimentally and numerically. Test samples of silicones with various degrees of phosphor settling were prepared and uniaxial tensile tests were conducted. The results indicate that, for specific volume fraction of phosphor, phosphor sedimentation tends to reduce the strength and elongation of overall composite. And with increasing degree of sedimentation, the weakening effect becomes more significant. The fractographs of the test samples indicate that cracks initiate around the bottom area where phosphor particles settle. Numerical investigations, which were conducted by random unit cell model with graded particle distribution, demonstrate that strain localization and stress concentration are significant where phosphor particles concentrate. It can be concluded that, to reduce mechanical degradation, phosphor sedimentation should be minimized in silicone/phosphor composite for LED packages. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42006.

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Cohesive modeling of dewetting in particulate composites: micromechanics vs. multiscale finite element analysis

Cited by 62 publications

References 22 publications

A micro–meso-model of intra-laminar fracture in fiber-reinforced composites based on a discontinuous Galerkin/cohesive zone method

A micro–meso-model of intra-laminar fracture in fiber-reinforced composites based on a discontinuous Galerkin/cohesive zone method

Computational homogenization of the debonding of particle reinforced composites: The role of interphases in interfaces

Phosphor settling induced mechanical degradation of silicone/phosphor composite in light emitting diode packages

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