Micromechanical modelling of the transverse damage behaviour in fibre reinforced composites

Vaughan, Ted J.; McCarthy, Conor T.

doi:10.1016/j.compscitech.2010.12.006

Cited by 301 publications

(136 citation statements)

References 14 publications

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“…Periodic boundary conditions are applied to the RVE models to ensure a macroscopically homogeneous stress/displacement field exists across the boundaries of each RVE (Vaughan and McCarthy 2011a;Vaughan and McCarthy 2011b). These consist of a series of kinematic boundary ties which ensure that in deformed configurations, there is both stress and displacement continuity on opposing RVE boundaries which maintains spatial periodicity, allowing the micro to macro transition.…”

Section: Periodic Homogenisation Approachmentioning

confidence: 99%

A three-scale finite element investigation into the effects of tissue mineralisation and lamellar organisation in human cortical and trabecular bone

Vaughan

McCarthy

McNamara

2012

Journal of the Mechanical Behavior of Biomedical Materials

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Section: Periodic Homogenisation Approachmentioning

confidence: 99%

A three-scale finite element investigation into the effects of tissue mineralisation and lamellar organisation in human cortical and trabecular bone

Vaughan

McCarthy

McNamara

2012

Journal of the Mechanical Behavior of Biomedical Materials

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“…They can be placed more efficiently in the unit-cell, leading to higher packing factors as well as providing generally flexible structures [10] with low acoustic impedance values [11]. Randomly oriented fiber structures, however, can provide higher values in transverse directions compared to aligned structures and can be easier to manufacture [12][13][14][15].…”

Section: Resultsmentioning

confidence: 99%

Effects of unit-cell boundary type on the electromechanical properties of randomly distributed multifunctional composite structures

Martin¹,

Challagulla²

2018

EasyChair Preprints

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Abstract-The unit-cell composition of three-dimensional finite element models for 3-0 and 3-1 type polymer (PVDF) -ceramic (BaTiO3) and ceramic (PZT-7A) -ceramic (BaTiO3) structures are compared to determine the effects of fiber interaction at the surface of the unit-cell on the effective elastic, piezoelectric and dielectric properties of the multifunctional composite systems. The first unit-cell type examined has enclosed fibers that are completely contained within its boundaries, the second type has fibers that are contained within the sides of the unit-cell but can be cut at the top and bottom surfaces, and the third type has fibers that can be cut on the top, bottom and side surfaces of the unit-cell. All cut fibers are matched on opposing surfaces for continuity. Randomly distributed and aligned circular fibers, randomly distributed and randomly oriented circular fibers, and one central enclosed fiber with varying volume fractions and aspect ratios are compared with these three unit-cell structures. Results show that fiber models display greater or equal values of C "" when compared to aligned or randomly oriented fibers for all cases except aspect ratio 1 polymer-ceramic structures. The third type of unit-cell shows the highest e "" values for single, aligned and randomly oriented fiber structures, except for the aspect ratio 10 polymerceramic case where the second type of unit-cell has greater results for aligned and single fibers. Finally, it can generally be seen that randomly oriented fibers have smaller values than similar aligned and single fiber structures with the exception being C "" of the ceramic-ceramic structures.

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“…It can be seen that Experimental the failure strength ranges from 151 MPa to 167 MPa giving the smallest and the largest differences of 4% and 14%, respectively, in comparison with the experimental results. An interesting outcome of using DEM is that the transverse compressive failure strains of the RVEs are also obtained whilst they have not been reasonably achieved in previous studies using FEM due to numerical convergence difficulties [7,22,39]. To show the accuracy of the DEM modelling, the results are also compared with two recent FEM models [7,40] in Fig.11.…”

Section: Prediction Of Stress-strain Curves and Damage Progression Unmentioning

confidence: 99%

A DEM model for visualising damage evolution and predicting failure envelope of composite laminae under biaxial loads

Ismail

Yang

2016

Composites Part B: Engineering

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A two dimensional particle model based on the discrete element method (DEM) is developed for micromechanical modelling of fibre reinforced polymer (FRP) composite laminae under biaxial transverse loads. Random fibre distribution within a representative volume element (RVE) is considered for the micromechanical DEM simulations. In addition to predicting the stress-strain curves of the RVEs subjected to transverse compression and transverse shear stresses against the experimental testing results and other numerical modelling results, the DEM model is also able to capture the initiation and propagation of all micro damage events. Fibre distribution is found to more significantly influence the ultimate failure of composite laminae under transverse shear, while it has much less effect on the failure under transverse compression. The failure envelope of composite laminae under biaxial transverse compression and transverse shear is predicted and compared with Hashin and Puck failure criteria, showing a reasonable agreement. The predicted failure envelope is correlated with the damage evolution and the quantitative analysis of failure events, which improves the understanding of the failure mechanisms.

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Micromechanical modelling of the transverse damage behaviour in fibre reinforced composites

Cited by 301 publications

References 14 publications

A three-scale finite element investigation into the effects of tissue mineralisation and lamellar organisation in human cortical and trabecular bone

A three-scale finite element investigation into the effects of tissue mineralisation and lamellar organisation in human cortical and trabecular bone

Effects of unit-cell boundary type on the electromechanical properties of randomly distributed multifunctional composite structures

A DEM model for visualising damage evolution and predicting failure envelope of composite laminae under biaxial loads

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