scholarly journals Parametric characteristics analysis of three cells in 3D and five-directional annular braided composites

PLoS ONE ◽  
2021 ◽  
Vol 16 (8) ◽  
pp. e0254691
Author(s):  
Weiliang Zhang ◽  
Xupeng Wang ◽  
Xiaomin Ji ◽  
Xinyao Tang ◽  
Fengfeng Liu ◽  
...  
Keyword(s):  
Volume Content ◽  
Cell Model ◽  
Cell Mass ◽  
Lower Surface ◽  
Unit Cell ◽  
Cell Models ◽  
Braided Composites ◽  
Fiber Volume ◽  
Characteristics Analysis ◽  
Braiding Angle

On the basis of analyzing the movement law of 3D circular braided yarn, the three-cell model of 3D five-direction circular braiding composite material is established. By analyzing the node position relationship in various cell models, the calculation formulas of braiding angle, cell volume, fiber volume and fiber volume content in various cell models are obtained. It is found that there are four different braiding angles in four internal cells, and the braiding angles in internal cells gradually increase from inside to outside. The braiding angles of upper and lower surface cells are approximately equal. With the increase of the length of the knuckles, the braiding angles of each cell decrease, and the braiding angles of the four inner cells decrease greatly, while the braiding angles of upper and lower surfaces decrease slightly. The results of parametric analysis showed that with the increase of the length of the knuckles and the inner diameter of cells, the mass of cells increased proportionally, while the total fiber volume content of cells decreased. With the increase of braiding yarn number and axial yarn number, the unit cell mass decreases in direct proportion, and the unit cell total fiber volume content increases. Through the research results of this paper, the geometrical characteristics of the cell model under different braided parameters can be obtained, which greatly improves the analysis efficiency.

A parameterized unit cell model for 3D braided composites considering transverse braiding angle variation

2021 ◽  
pp. 002199832110539
Author(s):  
Weijie Zhang ◽  
Shibo Yan ◽  
Ying Yan ◽  
Yiding Li
Keyword(s):  
Fiber Volume Fraction ◽  
Volume Fraction ◽  
Cell Model ◽  
Unit Cell ◽  
Unit Cell Model ◽  
Braided Composites ◽  
Fiber Volume ◽  
Angle Variation ◽  
3D Braided Composites ◽  
Braiding Angle

In this paper, a parameterized unit cell model for 3D braided composites considering transverse braiding angle variation is proposed, to assist the mechanical characterization of such materials. According to the geometric characteristics of 3D braided composites, a method for automatically generating textile geometries based on practical braiding parameters, including the main braiding angle, the transverse braiding angle, and the fiber volume fraction, is established and implemented in a CAD software package. In this model, the addition of transverse braiding angle educes a more flexible control of fiber volume fraction distribution, and with the combination of control parameters according to the actual fiber distribution needs of users, it can suggest the appropriate parameters for the unit cell. The generated unit cell models are used in finite element analysis and the results are validated against experiments for a number of 3D braided composites in terms of fiber volume fraction and elastic constants, and good agreement is observed. Based on the parameterized unit cell model, the effects of main braiding parameters on the elastic properties of 3D braided composites are discussed.

Microstructure Analysis of in-Plane Quasi-Isotropic Composites Reinforced by Multi-Direction and Multi-Layer Three Dimensional Fabric

2011 ◽  
Vol 415-417 ◽  
pp. 210-213
Author(s):  
Lan Ying Liu ◽  
Ya Nan Jiao
Keyword(s):  
Cross Section ◽  
Volume Content ◽  
Three Dimensional ◽  
Unit Cell ◽  
Experimental Results ◽  
The Other ◽  
Cell Models ◽  
Mathematical Relationship ◽  
Fiber Volume ◽  
Relationship Of

In this paper, a new multi-direction three-dimensional fabric, called in-plane quasi-isotropic fabric, including warps 0, wefts 90o, a set of bias yarns ±45o, and a vertical yarns Z fastening the other yarns together is designed. Unit cell models are established on the basis of the rule of yarn movement and on the basis of optimizing the yarn cross section on the method of braiding-solidify-cutting-polishing-viewing. Mathematical relationship of the parameters with geometry parameters is founded and the fiber volume content is calculated, the valid relationship is proved by experimental results.

Meshfree Continuum Damage Mechanics Modelling for 3D Orthogonal Woven Composites

2011 ◽  
Vol 488-489 ◽  
pp. 759-762
Author(s):  
L.Y. Li ◽  
M.H. Aliabadi ◽  
Pi Hua Wen
Keyword(s):  
Damage Mechanics ◽  
Shape Function ◽  
Cell Model ◽  
Continuum Damage Mechanics ◽  
Unit Cell ◽  
Woven Composites ◽  
Continuum Damage ◽  
Unit Cell Model ◽  
Cell Models ◽  
3D Orthogonal Woven

A Meshfree approach for continuum damage modeling of 3D orthogonal woven composites is presented. Two different shape function constructions, Radial basis (RB) function and Moving kriging (MK) interpolation, are utilized corresponding with Galerkin method in the Meshfree approach. The failure of two different unit cell models, straight-edge and smooth fabric unit cell model respectively, is compared.

A novel geometric model of four-directional 3D braided preforms

2020 ◽  
pp. 152808372091885
Author(s):  
Zunjarrao Kamble ◽  
Bijoya K Behera
Keyword(s):  
Volume Fraction ◽  
Cell Model ◽  
Geometric Model ◽  
Fibre Volume Fraction ◽  
Fibre Volume ◽  
Unit Cell ◽  
Experimental Results ◽  
Unit Cell Model ◽  
Braiding Angle ◽  
Good Agreement

The present research reports the geometric model of four-directional 3D (4D3D) braided preform developed on four-step 3D braiding machine which consists of even and an equal number of yarn carriers in the rows and columns, respectively, on machine bed. The yarn path within the unit cell of the preform was analyzed to establish the correlation between surface braiding angle and interior braiding angle. A single unit cell model approach was used to predict the fibre volume fraction of the preform. It has been observed that the number of yarn carriers in the rows and columns is a critical parameter to decide the geometry of 4D3D braided preform. The fibre volume fraction predicted by the present model was compared with the three-unit cell model, multi-unit cell model and experimental results. A good agreement was observed between model computed results and experimental results.

Progressive tensile damage simulation and strength analysis of three-dimensional braided composites based on three unit-cells models

2017 ◽  
Vol 52 (15) ◽  
pp. 2017-2031 ◽  
Author(s):  
Jiwei Dong ◽  
Ningfei Huo
Keyword(s):  
Failure Mechanism ◽  
Cell Model ◽  
Three Dimensional ◽  
Strength Analysis ◽  
Braided Composites ◽  
Surface Cell ◽  
Calculated Stress ◽  
Unit Cells ◽  
Braiding Angle ◽  
Interior Cell

In order to explore the micro-failure mechanism and predict tensile strength of three-dimensional braided composites, the three unit-cells models, namely interior cell, surface cell and corner cell, are established to simulate progressive damage of these materials. Macro model is firstly created and divided into three kinds of unit cells by their periodical distributions. A criterion is approached to determine damage and its pattern of each element, and stiffness degradation is implemented for the damaged elements with geometric damage theory. Periodical boundary conditions are applied on the models to calculate micro-stress and damage propagation is simulated with the increase of load. Each type of damage and its percentage is obtained by simulation and micro-failure mechanism is analyzed. Furthermore, the tensile strengths are predicted from calculated stress–strain curves. From simulation, composites with large braiding angle have more complicated micro-failure mechanism than composites with small braiding angle. It is also observed that there are more damages in surface cell than in interior cell and the damage types in the surface cell are various. The predicted results on the three unit-cells models agree well with the experimental data and are more accurate than only using an interior-cell model.

Numerical Simulations for Uniaxial Ratcheting of SiCP/6061Al Composites Concerning Particulate Arrangement

2007 ◽  
Vol 26-28 ◽  
pp. 317-320 ◽  
Author(s):  
Su Juan Guo ◽  
Guo Zheng Kang ◽  
Cheng Dong
Keyword(s):  
Metal Matrix ◽  
Cell Model ◽  
Three Dimensional ◽  
Unit Cell ◽  
Matrix Composites ◽  
Finite Element Code ◽  
Unit Cell Model ◽  
Cell Models ◽  
User Material Subroutine ◽  
Particulate Reinforced

Based on three dimensional cubic unit cell models containing several particulates with certain particulate arrangements, the monotonic tensile and uniaxial ratcheting behaviors of particulate reinforced metal matrix composites (i.e., T6-treated SiCP/6061Al composites) were numerically simulated by using elastic-plastic finite element code ABAQUS with help of newly developed user material subroutine (UMAT). In the simulations, the effects of different particulate arrangements inside the unit cell models on the monotonic tensile and ratcheting behaviors of the composites were discussed. It is shown that the effect of particulate arrangement on the ratcheting of the composite depends on the arranged modes and the number of particulates contained in the model, and the interaction between particulates can be represented reasonably by the cubic unit cell model with a suitable distribution of multi-particulates.

Microstructure analysis and solid unit cell modeling of three dimensionally six-directional braided composites

2016 ◽  
Vol 46 (5) ◽  
pp. 1257-1280 ◽  
Author(s):  
Kun Xu ◽  
Xiaomei Qian ◽  
Liming Xu
Keyword(s):  
Process Parameters ◽  
Control Method ◽  
Cell Model ◽  
Three Dimensional ◽  
Unit Cell ◽  
Microstructure Analysis ◽  
Volume Control ◽  
Unit Cell Model ◽  
Microstructure Parameters ◽  
Braiding Angle

A new solid unit cell model is developed based on the microstructure analysis of three-dimensional (3D) six-directional braided composite (6DBC) produced by four-step 1 × 1 procedures in this research. First, the volume control method is applied to analyze the spatial movement traces of yarns. Then the microstructure configuration and squeezing condition of yarns is analyzed in detail by the mathematical modeling. The relationships between the microstructure parameters of unit cell and the braiding process parameters are derived. The parametrical solid unit cell model for modeling the microstructure of 6DBC is established. Finally, the main microstructure parameters of specimens are calculated to validate the effectiveness of the model. The predicted results agree well with the available experimental data. In addition, the squeezing conditions of the braiding yarns and the axial yarns are analyzed in detail, respectively. The variations of the key microstructure parameters with the braiding angle are discussed. Results indicate that the parametrical unit cell model has provided a better understanding of the relationship between the microstructure and the braiding process parameters for 3D 6DBC.

Sign in / Sign up

Export Citation Format

Share Document