Development of a compressive failure model for carbon fiber composites and associated uncertainties

Camarena, Ernesto; Clarke, Ryan J.; Ennis, Brandon Lee

doi:10.1016/j.compscitech.2021.108855

Cited by 11 publications

(5 citation statements)

References 9 publications

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“…The geometrical morphology of IFM defect is usually described by a cosine function waveform. 17,52,53 The 2D projection drawing of the RVE model is given in Figure 8A. In a Cartesian coordinate system, the mathematical expression of this configuration is as follows:…”

Section: Rve Modelmentioning

confidence: 99%

“…This assumption has been validated for simulating the longitudinal compression characteristics of unidirectional CFRP composites. 17,54 However, periodical boundary conditions (PBCs) should be implemented to the RVE model with a single fiber, so as to assure the continuity of displacement and stress at the boundary. 55 The periodic displacement constraint applied to each pair of nodes on the pairing surface can be expressed as follows,…”

Section: Rve Modelmentioning

confidence: 99%

“…The geometrical morphology of IFM defect is usually described by a cosine function waveform 17,52,53 . The 2D projection drawing of the RVE model is given in Figure 8A.…”

Section: Micromechanical Fe Modelmentioning

confidence: 99%

“…It is assumed that all the fibers in the composites exhibit the same IFM angle and waveform parameter. This assumption has been validated for simulating the longitudinal compression characteristics of unidirectional CFRP composites 17,54 . However, periodical boundary conditions (PBCs) should be implemented to the RVE model with a single fiber, so as to assure the continuity of displacement and stress at the boundary 55 .…”

Section: Micromechanical Fe Modelmentioning

confidence: 99%

“…Recently, researchers have developed three‐dimensional (3D) FE models to predict the failure mode of CFRP composites under longitudinal compression load. For example, Naya et al 16 and Camarena et al 17 established a 3D representative volume element (RVE) model to investigate the effects of IFM angle, and mechanical properties of interface and matrix on the longitudinal compressive strength of CFRP composites. Sun et al 18 and Yuan et al 19 studied the influence of loading conditions on the formation of kink bands based on a 3D RVE model involving multi‐fibers.…”

Section: Introductionmentioning

confidence: 99%

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Micromechanical modeling of longitudinal compression behavior and failure mechanism of unidirectional carbon fiber reinforced aluminum composites involving initial fiber misalignment

Jiang,

Wang,

Liu

et al. 2024

Fatigue Fract Eng Mat Struct

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A micromechanical model with realistic initial fiber misalignment (IFM) was developed to simulate the longitudinal compression behavior of unidirectional carbon fiber/aluminum composites. The matrix and fiber were modeled using ductile damage law and brittle fracture model, respectively. The interfacial properties were firstly determined by the single‐fiber push‐out and transverse tensile tests, and the cohesive zone model was adopted to capture the interfacial behavior. The calculated compressive response curve is in alignment with the experimental data. Compression failure can be attributed to fiber kinking, possibly triggered by the matrix shear damage. The increase of IFM angle makes the failure mode being transformed from fiber crushing to fiber kinking, along with a significant decrease in compressive strength. With the fiber content increasing, the compressive strength increases first and then decreases, while the compressive modulus increases monotonically. Increasing interfacial strength significantly improves the compressive strength, but this is limited by the matrix properties.

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Section: Rve Modelmentioning

confidence: 99%

Section: Rve Modelmentioning

confidence: 99%

“…The geometrical morphology of IFM defect is usually described by a cosine function waveform 17,52,53 . The 2D projection drawing of the RVE model is given in Figure 8A.…”

Section: Micromechanical Fe Modelmentioning

confidence: 99%

Section: Micromechanical Fe Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Micromechanical modeling of longitudinal compression behavior and failure mechanism of unidirectional carbon fiber reinforced aluminum composites involving initial fiber misalignment

Jiang,

Wang,

Liu

et al. 2024

Fatigue Fract Eng Mat Struct

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The role of the fiber–matrix interface in the tensile properties of short fiber–reinforced 3D‐printed polylactic acid composites

Tóth,

Lukács,

Kovács

2024

Polymer Composites

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In this study, we investigate the relationship between structure and properties of fiber–matrix adhesion for material extrusion–based 3‐dimensional (3D) printed composites. We examine the influence of fiber length and fiber content on the tensile properties of glass, basalt, and carbon fiber–reinforced polylactic acid (PLA) composites. Short fiber–reinforced filaments were produced, then, simple micromechanical models were used to predict the in‐plane tensile properties. We found that interlayer tensile properties are strongly influenced by fiber–matrix adhesion. If adhesion is sufficient, the fibers and matrix deform together under tensile load. A second‐order relationship describes interlayer tensile strength in relation to fiber content between 5 and 25 w%, with a maximum at 15 w%, for carbon and basalt fiber–reinforced composites. If adhesion is weak, the crack propagates along the fiber–matrix interface, causing brittle fracture and low strength. This behavior was noted for the glass fiber composite, for which the calculated interface shear strength was the lowest (1.4 MPa). In this case, fiber content is inversely proportional to interlayer tensile strength. Our results show the role of fiber–matrix adhesion quality on tensile properties, which has a major impact on both the accuracy of predictions and the damage processes.Highlights Critical fiber length determines accuracy of tensile property estimates Quality of fiber–matrix adhesion governs interlayer damage process Poor adhesion causes brittle fracture and low strength Second‐order relationship of interlayer tensile strength and fiber content Loss of interlayer tensile strength in composite due to fiber–matrix interface

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A novel numerical simulation method for predicting compressive properties of 3D multiaxial braided composites considering various defects

Lei

Dou

Yan

et al. 2023

Chinese Journal of Aeronautics

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Development of a compressive failure model for carbon fiber composites and associated uncertainties

Cited by 11 publications

References 9 publications

Micromechanical modeling of longitudinal compression behavior and failure mechanism of unidirectional carbon fiber reinforced aluminum composites involving initial fiber misalignment

Micromechanical modeling of longitudinal compression behavior and failure mechanism of unidirectional carbon fiber reinforced aluminum composites involving initial fiber misalignment

The role of the fiber–matrix interface in the tensile properties of short fiber–reinforced 3D‐printed polylactic acid composites

A novel numerical simulation method for predicting compressive properties of 3D multiaxial braided composites considering various defects

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