A random waveness model for the stiffness and strength evaluation of 3D woven composites

Zhong, Shun; Guo, Licheng; Liu, Gang; Zhang, Li; Pan, Shilie

doi:10.1016/j.compstruct.2016.06.051

Cited by 26 publications

(12 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Yarn structure is sensitive to the nonlinear mechanical response of fabrics. 31 It requires the model to be able to characterize different types of yarn fluctuations and calculate yarn curve change in the fabric. Different yarn curves can be conveniently incorporated in the model by introducing geometric factors G F , G H , G HH .…”

Section: Shape Function and Weaving Parametersmentioning

confidence: 99%

A mesoscale tensile model for woven fabrics based on Timoshenko beam theory

Wang

Zhou

Ouyang

et al. 2022

Textile Research Journal

View full text Add to dashboard Cite

The yarn weave architectures highly influence the mechanical response of woven fabrics. To provide an accurate prediction of the mechanical behaviors of woven fabrics under tension, a mesoscale model is developed. The model takes into account yarn properties, yarn weaving pattern, and interactions between yarns. The yarn properties such as tensile modulus and yarn strength of yarns are considered as random variables. Each yarn in fabric is modeled as a Timoshenko beam with a weaving shape modeled by a parabolic function. The yarn shape evolution and mechanical response of undulated yarn under tension are computed based on Castigliano’s second theorem. The damage initiation and propagation of a yarn in fabric is introduced through a damage variable. The model is demonstrated on woven jute fabrics. Analytical and numerical analyses are carried out and show good prediction on the macroscopic tensile response of woven jute fabric. The model provides a quantitative understanding between yarn geometrical parameters and the expected material response, and makes it helpful for designing woven structural composites with high performance.

show abstract

Section: Shape Function and Weaving Parametersmentioning

confidence: 99%

A mesoscale tensile model for woven fabrics based on Timoshenko beam theory

Wang

Zhou

Ouyang

et al. 2022

Textile Research Journal

View full text Add to dashboard Cite

show abstract

“…The initial misalignments are usually reflected as fiber waviness or folds. Zhong et al (2016) proposed a random waviness model which considered the fiber tows' random waviness to investigate the tensile properties of 3D woven composites.…”

Section: The Effect Of the Fiber Initial Misalignment Anglementioning

confidence: 99%

A progressive damage model for 3D woven composites under compression

Guo

Liu

et al. 2018

International Journal of Damage Mechanics

Self Cite

View full text Add to dashboard Cite

A progressive damage model is proposed to investigate the damage initiation and evolution of 3D woven composites under uniaxial compression at a micromechanical level. The typical compressive experiments were carried out. Based on the observations, the compression failure modes of 3D woven composites mainly include fiber kinking, transverse failure of fiber tow, matrix fracture, and interfacial debonding. The initial damage criteria are according to the physically based failure criteria for the fiber kinking, the Puck criteria for the transverse failure of fiber tow, and the maximum stress criterion for the matrix. The damage of fiber tow–matrix interfacial is simulated through cohesive contact. Particularly, the fiber’s initial misalignment angle is taken into account in the damage model. The simulated compression results agree well with the experimental ones. The compressive stress–strain response of the 3D woven composite is forecasted. The damage evolution of each constituent of the 3D woven composite is obtained. The results show that the influence of the fiber’s initial misalignment angle on the compression strength of the 3D woven composite needs to be considered.

show abstract

“…The stress value of fiber bundles with better parallelism during compression is lower than that of fiber bundles with a parallelism difference. 21 Thus, the degree of discreteness and torsion degree of fibers distribution are adjusted by σ and κ in the numerical simulation platform, respectively, so as to adjust the relationship between compressive load and fiber deformation. The curves of compressive load and the change in height compared numerical simulation with actual working conditions of the preform are illustrated in Figure 9.…”

Section: Resultsmentioning

confidence: 99%

Research and modelling of fiber deformation mechanism of 3D four-direction preform under compression loading

Mei

Dong

Ren

et al. 2023

Textile Research Journal

View full text Add to dashboard Cite

In order to investigate further the compaction characteristics of the three-dimensional four-direction preform of carbon/carbon composite, a model of three-dimensional four-direction numerical preform at the micro-scale was established using the programming language in Python based on the ABAQUS simulation platform more realistically to reflect the micro-structure of the preform. A model of three-dimensional fiber numerical growth was built to describe the changes of fiber bundle cross-section under compressive load considering the random distribution, deflection, bending and the physical characteristics of fibers not penetrating each other in three-dimensional space. In addition to exploring the characteristics of the fiber bundle compaction process in the inter-laminar dimension, the interaction between laminated fibers of the preform was analyzed; the method of finite element was employed to construct a compaction model of the three-dimensional four-direction preform; the deformation of inter-laminar fibers under compressive load was studied by the numerical simulation method; the nonlinear mapping relationship between compressive load and compaction height consistent with the preform compaction experiment was obtained. The results demonstrated that the deflection coefficient of the numerical model was 0.32, which was most consistent with the actual result.

show abstract

A random waveness model for the stiffness and strength evaluation of 3D woven composites

Cited by 26 publications

References 19 publications

A mesoscale tensile model for woven fabrics based on Timoshenko beam theory

A mesoscale tensile model for woven fabrics based on Timoshenko beam theory

A progressive damage model for 3D woven composites under compression

Research and modelling of fiber deformation mechanism of 3D four-direction preform under compression loading

Contact Info

Product

Resources

About