Journal of Textile Research ›› 2019, Vol. 40 ›› Issue (04): 66-71.doi: 10.13475/j.fzxb.20180501006

• Textile Engineering • Previous Articles     Next Articles

Bending properties of three-dimensional I-shaped woven composites

HUANG Yaoli, LÜ Lihua(), WANG Guanju   

  1. School of Textile and Material Engineering, Dalian Polytechnic University, Dalian, Liaoning 116034, China
  • Received:2018-05-02 Revised:2018-11-20 Online:2019-04-15 Published:2019-04-16
  • Contact: Lü Lihua E-mail:lvlh@dlpu.edu.cn

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Abstract:

In order to solve the delamination of I-shaped laminated composites under bending loads, three I-shaped three-dimensional (3-D) woven fabrics with different heights were prepared by rational design of conventional weaving process on the common loom, then I-shaped 3-D woven fabrics with three different heights were fabricated into I-shaped 3-D woven composites by vacuum assisted resin transfer moulding technology to study the mechanical characteristics of the composites. Bending experiment and ABAQUS finite element simulation were used to compare and analyze the relationship between load/energy and displacement and the bending failure mode of I-shaped 3-D woven composites with three different heights under the same loading speed, respectively. The results show that the experimental data are in good agreement with the finite element model, showing that the finite element model has high reliability and can be used to predict the mechanical properties of I-shaped 3-D woven composites with different heights, which can provide theoretical guidance for the optimization design of I-shaped 3-D woven composites with high impact damage tolerance.

Key words: composity, I-shaped, three-dimensional woven structure, vacuum assisted resin transfer molding, finite element analysis

CLC Number: 

  • TS101.2

Fig.1

Schematic drawing of I-shaped 3-D woven fabric with flattening reduction method"

Fig.2

Warp section drawing of 3-D I-shaped woven fabrics with different heights"

Fig.3

Chain drafts of 3-D I-shaped woven fabrics with different heights"

Tab.1

Weaving parameters of 3-D I-shaped woven fabric with three different heights"

高度/mm 纱线层数 纱线密度/tex
A1/A3 A2 经纱 纬纱
20 5 11 800 800
40 5 11 800 800
60 5 11 800 800

Tab.2

Material parameters of 3-D I-shaped woven composites with different heights"

高度/mm E11/GPa E22/GPa E33/GPa V12 V23 V13 G12/GPa G13/GPa G23/GPa
20 76.12 5.82 5.82 0.25 0.25 0.21 2.32 2.32 1.55
40 125.90 7.29 7.29 0.25 0.25 0.21 4.31 4.31 3.65
60 160.70 10.57 10.57 0.30 0.30 0.21 7.38 7.38 5.75

Fig.4

Load-displacement curves of experiments and finite element analysis with different heights"

Tab.3

Errors of maximum load of experiments and FEM with different heights"

高度/mm 实验值/kN 模拟值/kN 误差/%
20 9.89 10.60 6.7
40 8.36 8.56 2.3
60 6.12 6.42 4.7

Tab.4

Errors of bending strength of experiments and FEM with different heights"

高度/mm 实验值/MPa 模拟值/MPa 误差/%
20 824.86 883.33 6.7
40 696.67 713.33 2.3
60 510.07 535.00 4.7

Fig.5

Energy-displacement curves of experiments and finite element analysis with different heights"

Fig.6

Photographs of experiments (a) and finite element analysis (b) of 3-D I-shaped woven composites with height of 20 mm"

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