Modelling of Damage Behaviour of a Short-Fiber Reinforced Composite Structure by the Finite Element Analysis Using a Micro-Macro Law

Guo, Guang; Fitoussi, Joseph; Baptiste, D.; Sicot, Nathalie; Wolff, Christian

doi:10.1177/105678959700600304

Cited by 17 publications

(5 citation statements)

References 3 publications

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“…These mechanisms occur simultaneously and cause the gradual degradation of the composite mechanical properties. Several micromechanical models based on the Eshelby inclusion method have been proposed in the literature [1,2] to predict damage and failure of short fiber composites. These approaches require the measuring of many material and damage configuration details (e.g., fiber spacing and orientation, size, shape, orientation of cracks and voids).…”

Section: Damage Model Development Model Descriptionmentioning

confidence: 99%

Mechanics of Damage and Degradation in Random Short Glass Fiber Reinforced Composites

Dano

Gendron

Mir

2002

Journal of Thermoplastic Composite Materials

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The present study is part of an ongoing research work on damage of random short fiber reinforced composites. First, the tensile behavior of the material was studied. In its initial state, the material is planarly isotropic elastic. As the load increases, damage induces an anisotropic degradation of the material properties. Then, the degradation mechanisms were studied from microscopic observations of polished specimens. Finally, a theoretical model based on damage mechanics is proposed to predict the mechanical behavior of the material. Damage variables are used to evaluate the change of the compliance tensor. The evolution laws of the damage variables are established within a thermodynamic framework using the associated thermodynamic forces. Correlation with the tensile test results is good. However, additional experiments have to be carried out to fully validate the proposed model.

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Section: Damage Model Development Model Descriptionmentioning

confidence: 99%

Mechanics of Damage and Degradation in Random Short Glass Fiber Reinforced Composites

Dano

Gendron

Mir

2002

Journal of Thermoplastic Composite Materials

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“…Many researchers have pointed out that fiber breakage is not the dominant mechanism in composites that have relatively short fibers, such as in most injection-molded parts [6,8,12,19]. Another example is the somewhat arbitrarily assumed micro-crack orientations in some stiffness degradation models [15,16,20]. It is only through successful development of micro-mechanics models, which can analyze and simulate the micro-damage mechanisms, that the influence from composites micro-structures can be fully understood and predicted [21].…”

Section: Introductionmentioning

confidence: 98%

Numerical simulation of matrix micro-cracking in short fiber reinforced polymer composites: Initiation and propagation

Huang

Talreja

2006

Composites Science and Technology

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“…There are two predominant approaches to continuum damage-mechanics (Krajcinovic, 1984; Lemaitre and Chaboche, 1990). The first approach accounts for the origin of damage on a lower length scale in terms to micromechanics (Fitoussi et al., 1996; Guo et al., 1997), see also Section 3 in Krajcinovic (1989) for an early account. With qualitative predictions in mind, the second strategy is of phenomenological nature.…”

Section: Introductionmentioning

confidence: 99%

A convex anisotropic damage model based on the compliance tensor

Görthofer

Schneider

Hrymak

et al. 2021

International Journal of Damage Mechanics

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This work is devoted to anisotropic continuum-damage mechanics in the quasi-static, isothermal, small-strain setting. We propose a framework for anisotropic damage evolution based on the compliance tensor as primary damage variable, in the context of generalized standard models for dissipative solids. Based on the observation that the Hookean strain energy density of linear elasticity is jointly convex in the strain and the compliance tensor, we design thermodynamically consistent anisotropic damage models that satisfy Wulfinghoff’s damage-growth criterion and feature a convex free energy. The latter property permits obtaining mesh-independent results on component scale without the necessity of introducing gradients of the damage field. We introduce the concepts of stress-extraction tensors and damage-hardening functions, implicitly describing a rigorous damage-analogue of yield surfaces in elastoplasticity. These damage surfaces may be combined in a modular fashion and give rise to complex damage-degradation behavior. We discuss how to efficiently integrate Biot’s equation implicitly, and show how to design specific stress-extraction tensors and damage-hardening functions based on Puck’s anisotropic failure criteria. Last but not least we demonstrate the versatility of our proposed model and the efficiency of the integration procedure for a variety of examples of interest.

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Modelling of Damage Behaviour of a Short-Fiber Reinforced Composite Structure by the Finite Element Analysis Using a Micro-Macro Law

Cited by 17 publications

References 3 publications

Mechanics of Damage and Degradation in Random Short Glass Fiber Reinforced Composites

Mechanics of Damage and Degradation in Random Short Glass Fiber Reinforced Composites

Numerical simulation of matrix micro-cracking in short fiber reinforced polymer composites: Initiation and propagation

A convex anisotropic damage model based on the compliance tensor

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