Formulation of a unit cell of a reduced size for plain weave textile composites

Li, S.; Zhou, Chuwei; Yu, Hui; Li, L.

doi:10.1016/j.commatsci.2011.01.013

Cited by 43 publications

(19 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…11). Loading of the unit cell beyond failure (maximum strain 2 %) was simulated by setting appropriate periodic boundary conditions [42] in the warp and weft direction and free boundaries for the top and bottom surfaces.…”

Section: Resultsmentioning

confidence: 99%

Geometrical modelling of 3D woven reinforcements for polymer composites: Prediction of fabric permeability and composite mechanical properties

Zeng

Brown

Endruweit

et al. 2014

Composites Part A: Applied Science and Manufacturing

111

View full text Add to dashboard Cite

For a 3D orthogonal carbon fibre weave, geometrical parameters characterising the unit cell were quantified using micro-Computed Tomography and image analysis. Novel procedures for generation of unit cell models, reflecting systematic local variations in yarn paths and yarn cross-sections, and discretisation into voxels for numerical analysis were implemented in TexGen. Resin flow during reinforcement impregnation was simulated usingComputational Fluid Dynamics to predict the in-plane permeability. With increasing degree of local refinement of the geometrical models, agreement of the predicted permeabilities with experimental data improved significantly. A significant effect of the binder configuration at the fabric surfaces on the permeability was observed. In-plane tensile properties of composites predicted using mechanical finite element analysis showed good quantitative agreement with experimental results. Accurate modelling of the fabric surface layers predicted a reduction of the composite strength, particularly in the direction of yarns with crimp caused by compression at binder cross-over points.

show abstract

Section: Resultsmentioning

confidence: 99%

Geometrical modelling of 3D woven reinforcements for polymer composites: Prediction of fabric permeability and composite mechanical properties

Zeng

Brown

Endruweit

et al. 2014

Composites Part A: Applied Science and Manufacturing

111

View full text Add to dashboard Cite

show abstract

“…The first stage deals with the identification of geometric symmetries, while the later stage involves deducing these symmetries into appropriate boundary conditions [34]. The current research asserts its originality on the later part.…”

Section: Finite Element Modeling 231 Boundary Conditions For the Modelmentioning

confidence: 97%

Finite element analysis of mechanical properties of woven composites through a micromechanics model

Khan

Hassan

Saeed

et al. 2015

Science and Engineering of Composite Materials

View full text Add to dashboard Cite

In a woven fabric composite, arrangement and behavior of the fibers contained in the yarn and the yarns themselves lead to an intricate deformation mechanism. The current research, therefore, intends to propose a simplified mathematical micromechanics model for calculating mechanical properties of the plain weave composite using finite element analysis (FEA). A repetitive volume element (RVE) cell approach has been adopted for properties evaluation of plain weave composites. The FEA allows the modeling and portrayal of fabrics by taking into account various geometric parameters such as the yarn undulation, the probability of existence of consonances in a unit cell and interaction between warp and fill tows. These factors help in generating a mesh close to the actual fabric/composite. Additionally, a technique to represent the internal layout of composite structure employing actual dimensions of yarn geometry using conventional measurement devices, rather than using the demanding method of obtaining measurements from photomicrographs of sectioned laminates, is also proposed. The geometric symmetries as reported in the available literature were also incorporated during the model formulation. The theory of comparative displacements was then used to construe these symmetries into appropriate mechanical terms. Consequently, this leads to the formulation of boundary conditions for the RVE. The proposed finite element micromechanics model is different from the existing models in a way that it defines the yarn cross-sectional path based upon computational fluid dynamics technique rather than conventionally obtained photomicrographic results or the proposed sinusoidal paths by various researchers. Experiments were then performed on the laminates used for obtaining the geometric parameters with the aim of supporting the validity of the suggested model. The results of computational analysis were found to be in good agreement with the outcomes of experimental investigation.

show abstract

“…1(c)). Whitcomb et al [20], Carvalho et al [23] and Li et al [24,25] presented different expression forms of the periodic boundary conditions of the repetitive cell according to the specific structural characteristics of the textile composites. In summary, these expressions depend on the structural configuration of the composites, the selection of repetitive cell model and the applied load conditions.…”

Section: Selection Of Unit-cell Modelmentioning

confidence: 99%

Comparison of periodic mesh and free mesh on the mechanical properties prediction of 3D braided composites

Zhang

Curiel-Sosa

Bui

2017

Composite Structures

View full text Add to dashboard Cite

Formulation of a unit cell of a reduced size for plain weave textile composites

Cited by 43 publications

References 7 publications

Geometrical modelling of 3D woven reinforcements for polymer composites: Prediction of fabric permeability and composite mechanical properties

Geometrical modelling of 3D woven reinforcements for polymer composites: Prediction of fabric permeability and composite mechanical properties

Finite element analysis of mechanical properties of woven composites through a micromechanics model

Comparison of periodic mesh and free mesh on the mechanical properties prediction of 3D braided composites

Contact Info

Product

Resources

About