Effects of fibre debonding and sliding on the fracture behaviour of fibre-reinforced composites

Zhang, Xi; Liu, Hong-Yuan; Mai, Yiu‐Wing

doi:10.1016/j.compositesa.2004.03.011

Cited by 17 publications

(5 citation statements)

References 22 publications

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“…Traditional micromechanical models focused mainly on the analysis of stress field [1][2][3], or predicting crack propagation using a prescribed failure criterion for composites with small numbers of fibers [4][5][6]. The ability to cope with inhomogeneity or/and disorder is essential in order to predict the damage process of a composite from micro cracking to catastrophic failure.…”

Section: Introductionmentioning

confidence: 99%

Microstructure effects on transverse cracking in composite laminae by DEM

Sheng¹,

Yang²,

Tan³

et al. 2010

Composites Science and Technology

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A particle discrete element method (DEM) was employed to simulate transverse cracking in laminated fiber reinforced composites. The microstructure of the laminates was modeled by a DEM model using different mechanical constitutive laws and materials parameters for different constituents, i.e., fiber, matrix and fiber/matrix interface. Rectangular, hexagonal and random fiber distributions were simulated to study the effect of fiber distribution on the transverse cracking. The initiation and dynamic propagation of transverse cracking and interfacial debonding were all captured by the DEM simulation, which showed similar patterns to those observed from experiments. The effect of fiber volume fraction was also studied for laminae with randomly distributed fibers. It was found that the distribution and volume fraction of fibers affected not only the transverse cracking path, but also the behavior of matrix plastic deformation and fiber/matrix interface yielding in the material.

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Section: Introductionmentioning

confidence: 99%

Microstructure effects on transverse cracking in composite laminae by DEM

Sheng¹,

Yang²,

Tan³

et al. 2010

Composites Science and Technology

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“…Existen algunos trabajos similares a este, entre los cuales está el de Pal y Haseebuddin [31], que estudia el efecto del contenido de fibras reforzantes sobre el módulo de Young; o el de Joshi y col. [32], que analiza el efecto del tipo de fibra. De igual forma se ha utilizado este método para analizar la influencia de grietas y la desunión reforzante-matriz [33][34][35][36], que puede modificarse de acuerdo a la fortaleza de la unión. Incluso el MEF permite el modelado de interfases, muy útil para el estudio de sistemas en los que ocurren reacciones, modelando estas interfases como un tercer material [37,38].…”

Section: Modelos Reportados Para La Estimación Del Comportamiento Mecunclassified

Potencialidades computacionales del Método de los Elementos Finitos para la modelación y simulación de materiales compuestos: revisión

2015

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RESUMENEn este trabajo se presenta una revisión bibliográfica de modelos computacionales que utilizan el Método de los Elementos Finitos (MEF) para el estudio del comportamiento mecánico de los materiales compuestos, enfocándose el análisis en materiales reforzados por partículas o fibras. El análisis realizado muestra que el MEF permite estimar, de manera efectiva, la influencia sobre las propiedades mecánicas de los materiales compuestos, de factores como el reforzante, su fracción volumétrica, orientación, relación de aspecto y tamaño. Esta revisión mostró que la propiedad más estudiada es el módulo de Young, así como los modelos que favorecen la disminución de la geometría utilizando las ventajas computacionales. Se destaca el trabajo futuro que requiere atención.Palabras clave: Método de los Elementos Finitos, MEF, compuestos, reforzantes, modelación, simulación. ABSTRACTThis work presents a review of computational models that use the Finite Elements Method (FEM) for the study of composite materials mechanical behavior, focusing the analysis in materials reinforced by particles or fibers. Bibliographic analysis shows that using FEM it is possible to successfully estimate the effect on the composites mechanical properties, of parameters such as the reinforcement type, volumetric fraction, orientation, aspect ratio and size. This review showed that the most studied property is Young´s modulus, as well as the models that favor the geometry decrease using the computational advantages. Future work that needs attention is addressed.Keywords: Finite Elements Method, FEM, composites, reinforcement, modeling, simulation. INTRODUCCIÓN AL MÉTODO DE LOS ELEMENTOS FINITOSEn la actualidad, es de gran importancia el estudio de los materiales, así como de los sistemas o estructuras en los cuales operan estos materiales. En muchas ocasiones, antes de fabricar un material o un prototipo, es deseable contar con información que permita tomar decisiones sobre el proceso final de fabricación. Por tal motivo, se ha incrementado de manera notable el uso de la modelación y la simulación. El Método de los Elementos Finitos (MEF) constituye hoy en día un procedimiento habitual de modelación y simulación, tanto en mecánica estructural como en mecánica de sólidos. Su uso se ha extendido también a la resolución de problemas de transferencia de calor, mecánica de fluidos y electromagnetismo [1]. El nacimiento y desarrollo del MEF es una consecuencia de la disponibilidad de herramientas electrónicas de cálculo cada vez más potentes desde finales del siglo XX. En el MEF las estructuras se dividen en zonas o elementos conectados meAutor Responsable: Ismeli Alfonso Fecha de envío:

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“…In particular, analytical models based on shear deformable beam/plate theories combined with linear or nonlinear bridging laws are used to simulate the z-pinning effects, by means of simplified models, which are able to reproduce mainly the global behavior of the crack propagation phenomena [7,18]. Refined techniques, based on the standard finite element method, are able to predict the mechanical response using 2D or 3D continuum models [30,31]. In this framework, many formulations are devoted to simulate nonstandard mechanisms concerning the z-pin pullout phenomenon, such as friction and debonding.…”

Section: Introductionmentioning

confidence: 99%

A dynamic model to predict crack propagation in z-pinned composite structures

Bruno

Greco

Lonetti

2011

Ann. Solid Struct. Mech.

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A dynamic model to predict crack growth phenomena in z-pinned reinforced composite structures is proposed. The formulation is based on a novel technique, which is able to couple Fracture Mechanics concepts with a strategy based on a moving mesh methodology. The former is utilized to predict the crack growth, whereas the latter defines the way to take into account the geometry changes on the basis of the invoked fracture parameters. The presence of the z-pins is simulated by means of a largescale bridging approach, introducing along the delaminated interfaces normal and tangential traction forces depending on the dynamic characteristics of the pull-out mechanism. In order to evaluate the fracture parameters, which govern the crack evolution, the J-integral decomposition procedure is utilized, providing new expressions in the framework of a large-scale bridging crack growth. A numerical modeling based on the finite element procedure is implemented and comparisons with experimental results are reported to validate the proposed formulation. Moreover, a parametric study is developed to investigate the influence of z-pins on the crack growth mechanisms.

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Effects of fibre debonding and sliding on the fracture behaviour of fibre-reinforced composites

Cited by 17 publications

References 22 publications

Microstructure effects on transverse cracking in composite laminae by DEM

Microstructure effects on transverse cracking in composite laminae by DEM

Potencialidades computacionales del Método de los Elementos Finitos para la modelación y simulación de materiales compuestos: revisión

A dynamic model to predict crack propagation in z-pinned composite structures

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