基于结构参数的平纹机织复合材料等效弹性性能预测

朱俊; 桂林; 李果; 于梦海; 王继辉

基于结构参数的平纹机织复合材料等效弹性性能预测

朱俊^{1, 2},
桂林¹,
李果¹,
于梦海¹,
王继辉^{2, 3, ,}

1.
中国船舶重工集团公司　洛阳船舶材料研究所, 洛阳 471023
2.
武汉理工大学　工程结构与力学系, 武汉 430070
3.
武汉理工大学　材料复合新技术国家重点实验室, 武汉 430070

基金项目: 国家国防科技工业局基础科研项目(JCKY2018207 B206)；国家国防科技工业局XX关键材料科研项目(TDGC-CL-19-031-2)

详细信息

通讯作者:
王继辉，博士，教授，博士生导师，研究方向为聚合物基复合材料　Email：jhwang@whut.edu.cn

中图分类号: TB332
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- 文章访问数: 78
- HTML全文浏览量: 50
- 被引次数: 0
出版历程
- 收稿日期: 2022-01-17
- 录用日期: 2022-04-16
- 修回日期: 2022-04-12
- 网络出版日期: 2022-04-29

Prediction of the effective elastic properties for plain woven fabric composite based on the structural parameters

Jun ZHU^{1, 2},
Lin GUI¹,
Guo LI¹,
Menghai YU¹,
Jihui WANG^{2, 3
, ,}

1.
Luoyang Ship Material Research Institute, China Shipbuilding Industry Corporation, Luoyang 471023, China
2.
Department of Engineering Structure and Mechanics, Wuhan University of Technology, Wuhan 430070, China
3.
State Key Laboratory of Advanced Technology for Material Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China

摘要

摘要: 经向纤维束与纬向纤维束纵横交错引起的纤维弯曲(也称为波纹)是平纹机织复合材料固有特征。首先，提出了一种精确描述平纹机织复合材料单胞3D结构特征的数学表达式。其次，基于经典层合板理论和等应力假设，考虑平纹机织复合材料厚度方向非对称引起的弯曲-拉伸耦合效应以及单胞结构特征，建立了含结构参数的平纹机织复合材料等效弹性性能多参数解析模型。通过数个典型算例验证了建立的多参数解析模型，结果表明：该多参数解析模型预测值与相关文献中有限元模型预测值、解析模型预测值、实验值等均吻合较好；该多参数解析模型预测值尤其是Z向弹性性能预测值，比文献中解析模型预测值更接近于实验值。在此基础上，进一步探讨了纤维束波纹比(包括纤维束波动方向波纹比与纤维束横截面波纹比)、经向与纬向纤维束构成的预成形体厚度、纤维束中弯曲部分的长度、相邻纤维束之间间距等结构参数对平纹机织复合材料弹性性能影响。该多参数解析模型建模方法为研究纺织复合材料力学性能提供了参考。
- 波纹 /
- 结构参数 /
- 弯曲-拉伸耦合效应 /
- 经典层合板理论 /
- 机织复合材料 /
- 弹性性能
Abstract: The warp and fill fiber strands interlacing in two mutually orthogonal directions to one another results in the fiber curvature, namely the waviness, which is the inherent characteristic of plain woven fabric composite. First, a mathematical description was developed to accurately represent the 3D architecture morphology of the unit cell for plain woven fabric composite. Next, an analytical multi-parameter model of plain woven fabric composite was established based on the classical lamination theory and iso-stress assumption. Meanwhile, the bending-extension coupling effect due to asymmetry along the thickness-direction as well as the architecture morphology of the unit cell was embedded in this model. The validation of several typical cases shows that the predicted effective elastic properties of plain woven fabric composite agree well with the numerical values of the finite element model, the results of the analytical model and the experimental data cited in the related literatures. Also, the predictions of the analytical multi-parameter model, especially the Z-direction ones, are more approaching to the experimental data than counterparts of other analytical models aforementioned. Furthermore, the influence of the structural parameters such as the waviness ratio of the fiber strand containing both the undulation direction and the cross section, the thickness of the preform consisting of the warp and fill fiber strands, the length of the curved section of the fiber strand and the spacing between the adjacent fiber strands on the elastic properties of plain woven fabric composite is elaborated. The present approach of the analytical multi-parameter model provides a reference for evaluating the mechanical properties of textile composite.
- waviness /
- structural parameter /
- bending-extension coupling effect /
- classical lamination theory /
- plain woven fabric composite /
- elastic property

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图 1 平纹机织复合材料及其单胞

Figure 1. Plain woven fabric composite and the unit cell

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图 2 平纹机织复合材料单胞横截面

Figure 2. Cross section of unit cell for plain woven fabric composite

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图 3 波纹比对E-glass/vinyl ester平纹机织复合材料弹性性能影响(1#case)

Figure 3. The effects of the waviness ratio on the elastic properties of E-glass/vinyl ester plain woven fabric composite for 1#case

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图 4 经向与纬向纤维束构成的预成形体厚度对E-glass/vinyl ester平纹机织复合材料弹性性能影响(2#case)

Figure 4. The effects of the thickness of the preform consisting of the warp and fill fiber strands on the elastic properties of E-glass/vinyl ester plain woven fabric composite for 2#case

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表 1 E-glass/vinyl ester复合材料及其组份材料弹性常数

Table 1. Elastic constants for E-glass/vinyl ester composite and the constituents

(a) Elastic constants of E-glass/vinyl ester composite^[15]
E₁/GPa	E₂=E₃/GPa	G₁₂=G₁₃/GPa	G₂₃/GPa	v₂₁=v₃₁	v₂₃
57.5	18.8	7.44	7.26	0.25	0.29
Notes: E₁, E₂ and E₃ are the moduli in 1-, 2- and 3- direction, respectively. G₁₂, G₁₃ and G₂₃ are the shear moduli in 1-2, 1-3 and 2-3 plane, respectively. v₂₁, v₃₁ and v₂₃ are the major Poisson’s ratios in 1-2, 1-3 and 2-3 plane, respectively.
(b) Elastic constants of the constituent fiber and resin matrix^[13]
constitute			E/GPa	G/GPa	v
E-glass fiber			73.0	30.4	0.2
vinyl ester resin matrix			3.4	1.49	0.35
Notes: E, G and v are the elastic modulus, the shear modulus and the major Poisson’s ratio of the constituents, respectively.

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表 2 本文模型中E-glass/vinyl ester平纹机织复合材料单胞的结构参数

Table 2. The unit-cell structural parameters of E-glass/vinyl ester plain woven fabric composite in present model

a_f=a_w/mm	h_f=h_w/mm	g_f=g_w/mm	h_t=h/mm	l_x=l_y/mm	u_f=u_w/mm
0.6	0.05	0	0.10	0.6	0.6
Notes: The subscript ‘f’ refers to fill strand, and the subscript ‘w’ refers to warp strand. a, h and u are the fiber strand width, the fiber strand thickness, the length of the curved section of the fiber strand within the unit cell, respectively. g is the spacing between the adjacent fiber strands within the unit cell. h_t is the thickness of the preform consisting of the warp and fill fiber strands within the unit cell. l_x, l_y and h are the length, width and thickness of the unit cell, respectively.

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表 3 E-glass/vinyl ester平纹机织复合材料弹性性能

Table 3. Elastic properties of E-glass/vinyl ester plain woven fabric composite

results	E_x=E_y/GPa	E_z/GPa	G_yz=G_xz/GPa	G_xy/GPa	v_yx	v_zx=v_zy
Present model	25.52	13.03	4.82	5.28	0.14	0.31
Experimental data^[13]	24.8±1.1	8.5±2.6	4.2±0.7	6.5±0.8	0.1±0.01	0.28±0.07
Analytical model^[13]	25.33	13.46	5.24	5.19	0.12	0.29
Analytical model^[15]	25.80	13.26	5.02	5.12	0.15	0.31
Notes: E_x, E_y and E_z are the moduli in X-, Y- and Z- direction, respectively. G_xy, G_yz and G_xz are the shear moduli in X-Y, Y-Z and X-Z plane, respectively. v_yx, v_zx and ν_zy are the major Poisson’s ratios in X-Y, X-Z and Y-Z plane, respectively.

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表 4 PE/epoxy复合材料及其树脂基体弹性常数^[31]

Table 4. Elastic constants of PE/epoxy composite and the constituent resin matrix

material	E₁/GPa	E₂=E₃/GPa	G₁₂=G₁₃/GPa	G₂₃/GPa	v₂₁=v₃₁	v₂₃
PE/epoxy	6.4029	2.5381	1.1495	0.91055	0.2334	0.39372
epoxy resin matrix	1	1	0.38462	0.38462	0.3	0.3
Notes: PE refers to the ultra-high molecular weight polyethylene fiber.

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表 5 PE/epoxy平纹机织复合材料弹性性能

Table 5. Elastic properties of PE/epoxyplain woven fabric composite

results	E_x=E_y/GPa	E_z/GPa	G_yz=G_xz/GPa	G_xy/GPa	v_yx	v_zx=v_zy
Present model	3.213	2.084	0.805	0.870	0.151	0.332
Finite element model^[27]	3.41	2.21	0.818	0.856	0.163	0.301

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表 6 E-glass/vinyl ester平纹机织复合材料单胞结构参数

Table 6. Structural parameters of the unit cell for E-glass/vinyl ester plain woven fabric composite

case	a_f=a_w/mm	h_f=h_w/mm	g_f=g_w/mm	h/mm	l_x=l_y/mm	u_f=u_w/mm
1#	0.6	variable (range: 0-0.3)	0	variable (h=h_t=h_f+h_w)	0.6	0.6
2#	0.6	variable (range: 0-0.05)	0	0.10	0.6	0.6
3#	0.6	0.05	0	0.10	0.6	variable (range: 0-0.6)
4#	0.6	0.05	variable (range: 0-0.5)	0.10	0.6	0.6

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表 7 纤维束中弯曲部分的长度对E-glass/vinyl ester平纹机织复合材料弹性性能影响(3#case)

Table 7. The effects of the length of the curved section of the fiber strand on Elastic properties of E-glass/vinyl ester plain woven fabric composite for 3#case

u_f=u_w/mm	E_x=E_y/GPa	E_z/GPa	G_yz=G_xz/GPa	G_xy/GPa	v_yx	v_zx=v_zy
0.1	34.933	18.531	7.451	7.074	0.122	0.300
0.2	33.230	17.365	6.993	6.716	0.124	0.304
0.3	31.432	16.452	6.531	6.357	0.127	0.303
0.4	29.516	15.552	6.109	5.997	0.130	0.304
0.5	27.534	14.645	5.709	5.637	0.133	0.306
0.6	25.516	13.730	5.324	5.277	0.137	0.308

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表 8 相邻纤维束之间间距对E-glass/vinyl ester平纹机织复合材料弹性性能影响(4#case)

Table 8. The effects of the spacing between the adjacent fiber strands on Elastic properties of E-glass/vinyl ester plain woven fabric composite for 4#case

g_f=g_w/mm	E_x=E_y/GPa	E_z/GPa	G_yz=G_xz/GPa	G_xy/GPa	v_yx	v_zx=v_zy
0.1	25.516	13.730	5.324	5.277	0.137	0.308
0.2	22.442	12.271	4.724	4.707	0.142	0.312
0.3	20.108	11.196	4.291	4.289	0.147	0.316
0.4	18.283	10.370	3.964	3.971	0.152	0.320
0.5	16.821	9.714	3.707	3.719	0.157	0.324
0.6	15.623	9.177	3.500	3.515	0.162	0.328

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