RETRACTED: On the microstructure of three-dimensional braided preforms

Chen, L.; Tao, Xiaoming; Choy, Chung-loong

doi:10.1016/s0266-3538(98)00079-7

Cited by 175 publications

(145 citation statements)

References 6 publications

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“…3D 4-steps braided fabric is an existing method in composites [8][9][10][11]. They have been applied in the domains of space flights; its structure is analyzed using corresponding point group and space group.…”

Section: Braided Geometry Structure Of 3d 4-steps Braided Compositesmentioning

confidence: 99%

Derivation of 3D Braided Geometry Structures from Braided Symmetry Group

M.A.Wensuo¹

2011

TOMSJ

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Abstract:Considering that there were very a few varieties of 3D braided materials at present, some novel 3D braided geometry structures were derived based on symmetry group theory. Group theory was used for the first time to describe the 3D braided geometry structures was discussed. The whole analyzing procedure from the existing braided geometry structure to the braided symmetry group was described in detail. It is found that because the reflection operation does not exist in some point groups and space groups of braided structure and some odd lattices appeared, the braided symmetry group is not always the same as symmetry groups of crystallographic. The representative volume element of 3D braided geometry structure was deduced from braided space point group, and 3D braided geometry structure was obtained from braided space group. 3D braided geometry structures can not only be classified based on braided group theory, but some of novel 3D braided structures can be deduced through the group's symmetry operators. It is proved that some novel 3D braided processes are feasible. Braided symmetry theory is an effective mathematical method for developing more and rational 3D braided materials.

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Section: Braided Geometry Structure Of 3d 4-steps Braided Compositesmentioning

confidence: 99%

Derivation of 3D Braided Geometry Structures from Braided Symmetry Group

M.A.Wensuo¹

2011

TOMSJ

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“…Over the last decades, extensive investigations have been mainly carried out [2][3][4][5][6][7][8][9][10][11][12] about the modeling of 3D braided composites. 4-step method is widely used as the basic forming technique of 3D braiding composites.…”

Section: Tow-scale Modelmentioning

confidence: 99%

“…The common numerical approach for characterizing the composite materials is to create a representative volume cell (RVC) that captures the major features of the underlying microstructure. A variety of RVC models and strategies were proposed to determine mechanical properties of 3D braided composite [2][3][4][5][6][7][8][9][10][11][12], but the work for characterization of 3D C/SiC composites has been limited compared to polymer and metal matrix composites. １ This study aims at the microstructure modeling and numerical prediction of effective CTE of 3-D braided C/SiC composite.…”

Section: Introductionmentioning

confidence: 99%

Numerical prediction of the effective coefficient of thermal expansion of 3D braided C/SiC composite

Zhang

2009

Int. J. Simul. Multidisci. Des. Optim.

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-This paper is focused on the microstructure modeling and evaluation of effective coefficient of thermal expansion (CTE) of 3D braided carbon fiber-reinforced silicon carbide composites (C/SiC). Regarding the multi-scale characteristics of the composite, the microstructure modeling is carried out sequentially from the fiber scale to tow scale. Effective elastic properties are obtained based on the sequential homogenization from the fiber scale to the tow scale. A stain energy model is developed for the prediction of the effective CTE of composite materials. This model is based on the relationship established between the strain energy of the microstructure and that of the homogenized equivalent model under specific thermo-elastic boundary conditions. Expressions of closed-form are derived for the effective CTE in terms of the strain energy and effective elastic tensor. Numerical results obtained by the proposed model show a good agreement with the results measured experimentally.

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“…The quasi-static mechanical properties of 3D braided composites have been studied extensively, including the establishment of microstructure models [1][2][3][4], the prediction of stiffness and strength properties [5][6][7][8], and the investigation of damage and failure mechanisms under various static loadings [9][10][11][12]. However, thus far, the reports regarding the high velocity impact performance of 3D braided composites are relatively limited.…”

Section: Introductionmentioning

confidence: 99%

“…It is known that 3D braided composites have a skin-core structure and are composed of three regions: interior, surface and corner [3,4]. Each region is built up of identical unit-cell with unique yarn configuration and distinctive properties which must be treated separately.…”

Section: Introductionmentioning

confidence: 99%

Finite element analysis of the damage mechanism of 3D braided composites under high-velocity impact

2016

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Abstract:The integrated near-net-shape structure of 3D braided composites provides excellent impact resistant properties over laminated composites. At the same time, the load distribution and damage mechanisms throughout the structures become more complicated. In this paper, a finite element model based on three unit-cells is established to simulate the penetration process of 3D braided composites under high velocity impact. A 3D rate-dependent constitutive model is developed to determine the constituent behavior in the three unit-cells.Tsai-Wu criterion with Mises criterion and an instantaneous degradation scheme are coded by a user material subroutine VUMAT developed in Abaqus/Explicit. The whole process of ballistic damage evolution of 3D braided composites is simulated, and the impact resistance and damage mechanisms are revealed in detail in the simulation process. The effects of striking velocity on the ballistic properties and energy absorption characteristics of the composite structures are also discussed.

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RETRACTED: On the microstructure of three-dimensional braided preforms

Cited by 175 publications

References 6 publications

Derivation of 3D Braided Geometry Structures from Braided Symmetry Group

Derivation of 3D Braided Geometry Structures from Braided Symmetry Group

Numerical prediction of the effective coefficient of thermal expansion of 3D braided C/SiC composite

Finite element analysis of the damage mechanism of 3D braided composites under high-velocity impact

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