Elastic modulus of 3D carbon/carbon composite using image-based finite element simulations and experiments

Sharma, Rajneesh; Mahajan, Puneet; Mittal, Ravi Kant

doi:10.1016/j.compstruct.2012.11.019

Cited by 51 publications

(30 citation statements)

References 22 publications

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“…The method of asymptotic numerical homogenisation with periodic boundary conditions is one of the most effective approaches to obtain the effective homogenised stiffness matrix of a heterogeneous elastic material (Jansson 1992;Li 1997;Sharma et al 2013). In this approach, six boundary conditions are applied to a representative volume element (RVE), which is modelled with detailed micro/meso-scale multi-phasic constituents, to calculate the homogenised elastic properties of the RVE.…”

Section: Xct-image Based Numerical Homogenisationmentioning

confidence: 99%

“…For instance, in the last decade XCT has been applied to characterise microstructures and properties of wide range of materials, such as geological materials (rock, soil and fossils) (Carlson, 2006), metals and alloys Marrow et al, 2006;Qian et al, 2008), porous materials (Kerckhofs et al, 2008), composites (Drummond et al, 2005;Sharma 2013), asphalt mixtures (Song et al, 2006), cement (Meyer et al, 2009) and concrete (Garboczi, 2002;Wang et al, 2003;Man and van Mier, 2008;Landis and Bolander, 2009). Many XCT studies acquire the internal structures of intact materials without external loading, or study damaged materials after loading (i.e.…”

Section: Introductionmentioning

confidence: 99%

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In-situ X-ray computed tomography characterisation of 3D fracture evolution and image-based numerical homogenisation of concrete

Yang

Ren

Sharma

et al. 2017

Cement and Concrete Composites

180

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. In-situ X-ray computed tomography characterisation of 3D fracture evolution and image-based numerical homogenisation of concrete. Cement & Concrete Composites, 75,[74][75][76][77][78][79][80][81][82][83] University of Bristol -Explore Bristol Research General rightsThis document is made available in accordance with publisher policies. Please cite only the published version using the reference above. Full terms of use are available: http://www.bristol.ac.uk/pure/about/ebr-terms _________________________________________________________ * Corresponding author: Prof. Z Yang, Email: ac1098@coventry.ac.uk

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Section: Xct-image Based Numerical Homogenisationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

In-situ X-ray computed tomography characterisation of 3D fracture evolution and image-based numerical homogenisation of concrete

Yang

Ren

Sharma

et al. 2017

Cement and Concrete Composites

180

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“…In the cohesive zone model, the interfacial debonding and frictional sliding behavior as well as the effect of the residual stress have been considered. Sharma et al [21] developed an image-based finite element model to determine the homogenized effective elastic properties of 3D carbon/carbon composites. In this model, the imperfections of microstructure such as cracks and voids, the cross-section distortion and mis-alignment of the yarns were introduced by using X-ray tomography, and the yarn/matrix interfaces were modeled as frictional cohesive surfaces.…”

mentioning

confidence: 99%

A novel interface constitutive model for prediction of stiffness and strength in 3D braided composites

Zhang

Curiel-Sosa

Bui

2017

Composite Structures

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Please cite this article as: Zhang, C., Curiel-Sosa, J.L., Quoc Bui, T., A novel interface constitutive model for prediction of stiffness and strength in 3D braided composites, Composite Structures (2016), doi: http://dx.doi. org/ 10.1016/j.compstruct.2016.12.042 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Maximum stress criteria and a gradual degradation scheme are applied to predict the damage evolution of yarns and matrix. A user-material subroutine VUMAT based on finite element package ABAQUS/Explicit is developed for these constitutive models. The stiffness and strength properties of 3D braided composites are derived from the calculated stress-strain curves under typical loading cases. The damage mechanism of constituents especially the interface is revealed in these simulation processes. The effects of the interface parameters on the mechanical properties of composites are investigated, which provides a reference for optimizing design and control of the interface properties of 3D braided composites.

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“…The unit cells were analyzed for six independent load cases and are discussed as follows. Table 5 Interfacial properties for fiber bundle/matrix interface (Sharma (2013) The stress-strain response of the unit cells is shown in Fig.5 for e 11 and e 33 loading conditions. The response of the stresses was nonlinear nearly up to 0.1% strain and followed by an almost linear part up to peek.…”

Section: Imperfectly Bonded Interfaces (Case-2)mentioning

confidence: 99%

“…The unilateral contact and adhesion conditions in the normal directions are given as (Alfano (2006), Sharma (2013)). …”

Section: Homogenization and Periodic Boundary Conditionsmentioning

confidence: 99%

Finite element analysis for mechanical characterization of 4D inplane carbon/carbon composite with imperfect microstructure

Sharma

Bhagat

Mahajan

2014

Lat. Am. j. solids struct.

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Finite element mesh of multi-directional 4D carbon/carbon (C/C) composite was reconstructed from 2D images obtained by X-ray tomography. Thus, imperfections in the composite such as voids, misalignment and cross-section distortion of the fibre bundles were directly incorporated in the finite element mesh. 2D images of the composite were also used for the characterization of the porosity in the composite. The effect of these micro structural imperfections was studies by assuming perfect bonding at the bundle/matrix interface. The initial mechanical properties of the composite were obtained from unit cell analysis using asymptotic homogenization and moduli in x, y and z directions were 39, 25 and 44 GPa. However, matrix and bundle/matrix interfacial cracks were also clearly visible in the X-ray tomographic images. Later, the effects of debonding was incorporated by using frictional cohesive interaction at bundle/matrix interfaces and matrix cracking was modeled by degrading the elastic properties of matrix. Final, the response of the composite was studied under six individual load cases.

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Elastic modulus of 3D carbon/carbon composite using image-based finite element simulations and experiments

Cited by 51 publications

References 22 publications

In-situ X-ray computed tomography characterisation of 3D fracture evolution and image-based numerical homogenisation of concrete

In-situ X-ray computed tomography characterisation of 3D fracture evolution and image-based numerical homogenisation of concrete

A novel interface constitutive model for prediction of stiffness and strength in 3D braided composites

Finite element analysis for mechanical characterization of 4D inplane carbon/carbon composite with imperfect microstructure

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