Bimodulus constitutive relation and mesoscopic model of braided composites

Jiang, Lanxin; Xiao, Shoune; Yang, Bing; Yang, Guangwu; Zhu, Tao; Wang, Mingmeng

doi:10.1016/j.compstruct.2021.114115

Cited by 7 publications

(6 citation statements)

References 18 publications

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Section: As Compressive Regionmentioning

confidence: 99%

“…The tensile and compression properties of woven CFRP are different regardless of the microscale and mesoscale. 20 To be applied in engineering, further exploration of the constitutive relationship from a macroscale perspective is needed. The constitutive equation of a unidirectional plate can be expressed aswhere S is the flexibility matrix.…”

Section: Bimodulus Constitutive Modelmentioning

confidence: 99%

“…Therefore, the determination of the neutral plane is consistent with that of TBM and PBM. The traditional criterion of principal stress 20,37,38 is improved and simplified because coordinating the direction of the principal axis with the fibre direction, as follows, is difficult:where E1+ and E2+ are the tensile moduli in the x- and y-directions, respectively, and E1− and E2− are the compressive moduli in the x- and y-directions, respectively.…”

Section: Bimodulus Constitutive Modelmentioning

confidence: 99%

“…However, these studies did not consider the deviation of the tensile and compressive properties of woven composites in the constitutive model. Jiang et al 20 designed tensile and compressive tests, analysed a unit-cell model, and observed that the buckling and entanglement of woven fibres during compression resulted in a deviation in the tensile modulus and compressive modulus. A bimodulus constitutive model was proposed, but its application in macroscopic simulation was not realised.…”

Section: Introductionmentioning

confidence: 99%

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Bimodulus constitutive models and the simulation on bending properties of woven carbon fibre-reinforced composites

Jiang,

Wang,

Yang

et al. 2023

Journal of Composite Materials

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The tensile and compressive properties of woven carbon fibre-reinforced composites (CFRP) are different owing to the buckling and entanglement of fibre bundles. Two bimodulus constitutive models (TBM and PBM) were proposed based on the track stress criterion and principal stress criterion. Combined with the Hashin three-dimensional strength criterion and Alvaro stiffness reduction criterion, a material subroutine was written to calculate the bimodulus constitutive models. Three-point bending tests of [0/90]20 and [±45]20 were designed to obtain the load–displacement curves and failure modes. The precision of the calculation results with the traditional unimodulus model and bimodulus models were compared, and the bending performance of woven CFRP was explored. The results demonstrate that fibre fracture and interlayer damage occur with different stacking sequences. The material properties can be better shown with less error as bimodulus models. The stiffness and strength of the PBM were slightly larger than those of the TBM, and the failure factors were smaller than those of the TBM. The results of the TBM are closer to the test, and the material subroutine is easier to realise. Bimodulus constitutive models have good application prospect in woven composites for higher accuracy.

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Section: As Compressive Regionmentioning

confidence: 99%

Section: Bimodulus Constitutive Modelmentioning

confidence: 99%

Section: Bimodulus Constitutive Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Bimodulus constitutive models and the simulation on bending properties of woven carbon fibre-reinforced composites

Jiang,

Wang,

Yang

et al. 2023

Journal of Composite Materials

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“…The two-dimensional (2D) braided structure (Figure 1(d)) is the most commonly used fiber architecture in over-braiding. 2D braided composites have also been extensively discussed [9][10][11] and applied. 8,[12][13][14] In 2D braided structure, two sets of braided yarn (reinforcement yarn) are intertwined with each other, which causes the out-of-plane undulation in reinforcement yarns and decreases the in-plane mechanical properties of the composites.…”

mentioning

confidence: 99%

Estimating the elastic modulus of unidirectional over-braided multilayer composites

Liu

Jiazhi

Chen

et al. 2022

Textile Research Journal

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Unidirectional over-braiding was developed based on two-dimensional over-braiding. Unidirectional over-braided multilayer composites have excellent mechanical properties and broad application prospects. It is necessary to estimate accurately the elastic modulus of unidirectional over-braided multilayer composites. In this study, the representative unit cell geometry model of unidirectional over-braided multilayer composites was established. As the braid angle increased from the first to the last layer, two model analytical methods were proposed to predict the elastic modulus of unidirectional over-braided multilayer composites. The prediction results of the two methods had good correlation with the experimental results. The smaller the increment of the braid angle from the first to the last layer, the smaller the difference between the results of the two methods. As a result of the increase in undulation amplitude, the longitudinal modulus of two-dimensional over-braided multilayer composites showed a decrease (7.94%) in comparison to the unidirectional over-braided multilayer composites. In over-braided multilayer composites, the outer layer compacted the inner layer due to the braid tension. In unidirectional over-braided multilayer composites, the interaction between layers could be ignored. In two-dimensional over-braided multilayer composites, the inner layer was obviously compacted by the outer layer. However, as the amplitude and length of the undulation repeat unit of the braided yarn were not affected by the compaction, the reduction in the longitudinal modulus of two-dimensional over-braided multilayer composites caused by compaction was very slight.

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Effects of Hygrothermal Aging on the Flexural Properties of Cross-Ply and Angle-Ply CFRP Composite Laminates

Chen,

Meng,

Sun

et al. 2023

Fibers Polym

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Bimodulus constitutive relation and mesoscopic model of braided composites

Cited by 7 publications

References 18 publications

Bimodulus constitutive models and the simulation on bending properties of woven carbon fibre-reinforced composites

Bimodulus constitutive models and the simulation on bending properties of woven carbon fibre-reinforced composites

Estimating the elastic modulus of unidirectional over-braided multilayer composites

Effects of Hygrothermal Aging on the Flexural Properties of Cross-Ply and Angle-Ply CFRP Composite Laminates

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