An improved rule of mixture model based on deformation coordination in predicting engineering constants of unidirectional fiber reinforced composites

Kou, Guangjie; Zhang, Wei; Chen, Jinshu; Chen, Jiawei; Yang, Zhengwei

doi:10.1016/j.mtcomm.2022.105072

Cited by 2 publications

(1 citation statement)

References 49 publications

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“…27 Besides, the stress transfer between the fiber and matrix is usually carried out by the interface model in composite micromechanics. 26,28,29 The cohesive zone model, as the most widely used interface model, is applied at the interface between the fiber and matrix for the generated RVEs in this work. The element size is 0.6 μm and the element type is hexahedral elements (C3D8R), and each RVE contains more than 790,000 elements.…”

Section: Prediction Of Effective Elastic Properties For Unidirectiona...mentioning

confidence: 99%

Efficient generation of random fiber distributions in fiber reinforced composites

Kou

Feng

Zhang

et al. 2023

Journal of Reinforced Plastics and Composites

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This paper proposes a new algorithm to generate representative volume elements (RVEs) with random fiber distribution in fiber reinforced composites (FRC). The proposed algorithm is straightforward and easy to implement based on judging the maximum and minimum distances between a new fiber and existing fibers. The generation results demonstrate that the maximum fiber volume fraction gradually increases and oscillates violently before reaching 78.54% as the fiber radius rises. Moreover, with the increase of RVE size, the maximum fiber volume fraction changes gently when the fiber radius does not exceed 6.5 μm, but it changes dramatically at other fiber radii. Then, the fiber distributions of the generated RVEs are evaluated using the nearest neighbor distance, Ripley’s K function, and pair distribution function. The evaluation results indicate that the fiber distributions present randomness. Lastly, the effective elastic properties of the Carbon/Epoxy unidirectional FRC are predicted using the RVEs generated by the proposed algorithm, the RVEs generated by regularization, and the Mori–Tanaka method. It is found that the prediction using the RVEs generated by the proposed algorithm is more accurate than the regularization, compared with the Mori–Tanaka and experiment results. The proposed algorithm contributes to microstructure modeling in computational micromechanics.

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Section: Prediction Of Effective Elastic Properties For Unidirectiona...mentioning

confidence: 99%

Efficient generation of random fiber distributions in fiber reinforced composites

Kou

Feng

Zhang

et al. 2023

Journal of Reinforced Plastics and Composites

Self Cite

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Influence of intra-ply discontinuities on the mechanical behavior of continuous E-glass fiber reinforced composites

Kiliçoğlu,

Tanoğlu,

Bilmez

et al. 2024

Journal of Composite Materials

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This study examines how structural discontinuities created during production affect glass fiber-reinforced composite plates. Due to geometrical constraints, the composite microstructure’s discontinuities can be categorized as inter-ply and intra-ply. Material testing was conducted at the coupon level as an initial step to ascertain material characteristics. Two full-scale models of intra-ply composite samples were manufactured by employing layers of glass fiber-reinforced prepregs. Discontinuities were generated in the samples using a computer numeric control cutter and then manually applied. The discontinuities’ impact on the composite laminate’s mechanical properties was assessed through full-scale pieces using three-point bending quasi-static tests. Servo-hydraulic actuators were used to conduct tests on the items. The experimental test results were compared with CAE analysis predictions by evaluating sectional fiber volume fraction. The characteristics of local discontinuities were analyzed using a microscope to enhance the findings of the CAE model. This comprehensive approach offers insights into the intricate connection between internal structural inconsistencies and the mechanical properties of continuous glass fiber-reinforced materials. It supports optimizing composite manufacturing processes and improves composite parts’ structural reliability. Dislocation areas were found to result in the formation of resin-rich zones in this investigation. The exothermic curing process in the component’s zones results in elevated temperatures, leading to a color change in the resin from clear to yellow. The yellow areas are easily recognizable and show decreased mechanical durability.

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An improved rule of mixture model based on deformation coordination in predicting engineering constants of unidirectional fiber reinforced composites

Cited by 2 publications

References 49 publications

Efficient generation of random fiber distributions in fiber reinforced composites

Efficient generation of random fiber distributions in fiber reinforced composites

Influence of intra-ply discontinuities on the mechanical behavior of continuous E-glass fiber reinforced composites

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