铺放工艺参数对预浸料丝束曲线铺贴质量的影响

蔡立成; 彭啸; 汪海晋; 丁会明; 徐强

doi:10.13801/j.cnki.fhclxb.20200826.004

铺放工艺参数对预浸料丝束曲线铺贴质量的影响

doi: 10.13801/j.cnki.fhclxb.20200826.004

蔡立成^1,,
彭啸^1,,
汪海晋^1,,
丁会明^2,,
徐强^1, ,

1.
浙江大学　机械工程学院，杭州 310012
2.
杭州艾美依航空制造装备有限公司复合材料部门，杭州 311200

基金项目: 国家自然科学基金 (51805476)

详细信息

通讯作者:
徐强，博士，副教授，硕士生导师，研究方向为复合材料力学　 E-mail：xuqiang@zju.edu.cn

中图分类号: TB332
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- 文章访问数: 855
- HTML全文浏览量: 255
- PDF下载量: 105
- 被引次数: 0
出版历程
- 收稿日期: 2020-06-18
- 录用日期: 2020-07-29
- 网络出版日期: 2020-08-26
- 刊出日期: 2021-06-23

Influence of laying process parameters on curve trajectory placement quality of prepreg tow

CAI Licheng^1
,,
PENG Xiao^1
,,
WANG Haijin^1
,,
DING Huiming^2
,,
XU Qiang^{1
, ,}

1.
College of Mechanical Engineering, Zhejiang University, Hangzhou 310012, China
2.
Department of Composite Materials, Hangzhou AME Aerospace Manufacturing Equipment Corporation Limited, Hangzhou 311200, China

摘要

摘要: 为研究铺放工艺参数对复合材料预浸料丝束曲线铺贴质量的影响规律及作用机制，首先自主设计并搭建了可模拟铺丝机曲线铺贴运动的试验平台，进行了变铺放工艺参数与变铺放半径的预浸料丝束曲线铺贴试验。通过测量计算有效贴合长度比、褶皱角度及曲率半径比，并结合变铺放工艺参数的单因素剥离试验对铺放质量进行了表征。结果表明：曲线铺贴质量与预浸料丝束黏结力及弯曲刚度密切相关；随铺放温度、压力和张力增大、铺放速率减小，丝束黏结力上升，曲线铺贴质量提高；铺放温度升高引起的丝束弯曲刚度下降可提升曲线铺贴准确性，但过高的铺放温度会导致丝束黏性下降，曲线铺贴缺陷显著；铺放张力会改变丝束的受力状态，进而影响曲线铺贴路径的准确性；此外，曲线铺贴半径越小，铺放质量对工艺参数的变化越敏感。
- 自动铺丝 /
- 工艺参数 /
- 曲线铺贴 /
- 剥离试验 /
- 预浸料 /
- 黏结力行为
Abstract: In order to study the effect and mechanism of laying process parameters on the curve trajectory placement quality of prepreg tow, an automated fiber placement simulation test platform was designed and built firstly, and the test of curve trajectory placement was carried out by changing the laying process parameters and laying radius. The laying quality was represented by the measurement and calculation of effective tack width ratio, wrinkle angle and curvature radius ratio and also the results of peeling test of variable laying process parameters. The results show that the curve trajectory placement quality is closely related to the tack and bending stiffness of prepreg tow. With the increase of laying temperature, pressure and tension and the decrease of laying velocity, the tack of prepreg tow increases and the curve trajectory placement quality is improved. Due to the increase of laying temperature, the bending stiffness of the prepreg tow decreases, which can improve the accuracy of laying. However, excessive temperature will cause the tack of the prepreg tow to decrease, make the defect of curve placement obvious. The laying tension will change the stress state of the prepreg tow, thus affecting the accuracy of the laying path. In addition, the smaller the curve placement radius is, the more sensitive the placement quality is to the change of process parameters.
- automated fiber placement /
- process parameter /
- curve trajectory placement /
- peel test /
- prepreg /
- tack behavior

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图 1 曲线铺贴台及工作原理示意图

Figure 1. Curve placement table and schematic diagrams of operating principle

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图 2 曲线铺贴表征量测量示意图

Figure 2. Schematic diagrams of the measurement of characteristic quantity of curve placement

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图 3 曲线铺贴表征量测量示意图

Figure 3. Schematic diagrams of the measurement of characteristic quantity of curve placement

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图 4 剥离试验装置

Figure 4. Experimental set-up for peeling test

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图 5 不同铺放温度下T700/7901预浸料有效贴合长度比 (a)、褶皱角度 (b) 与曲率半径比 (c) 测量曲线

Figure 5. Effective tack width ratio (a), wrinkle angle (b) and radius of curvature ration (c) measurement curves of T700/7901 prepreg tow at different curve trajectory placement temperatures

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图 6 不同铺放温度下树脂型态分布

Figure 6. Resin distribution at different laying temperatures

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图 7 不同铺放温度下T700/7901预浸丝束有效贴合长度比、褶皱角度、曲率半径比与黏结力、弯曲力的关系

Figure 7. Relationship between effective tack width ratio, wrinkle angle, radius of curvature ratio and tack and bending of T700/7901 prepregtow at different laying temperatures

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图 8 不同铺放压力下有效贴合长度比L (a)、褶皱角度θ (b) 与曲率半径比R'/R (c) 测量曲线

Figure 8. Effective tack width ratio (a), wrinkle angl (b) and radius of curvature ration (c) measurement curves at different curve trajectory placement pressures

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图 9 不同铺放压力下T700/7901预浸丝束有效贴合长度比、褶皱角度与黏结力关系

Figure 9. Relationship between effective tack width ratio,wrinkle angle and tack of T700/7901 prepreg tow at different laying pressures

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图 10 过大铺放压力下的T700/7901预浸料缺陷

Figure 10. Defects of T700/7901 prepreg under excessive laying pressure

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图 11 不同铺放张力下有效贴合长度比 (a)、褶皱角度 (b) 与曲率半径比 (c) 测量曲线

Figure 11. Effective tack width ratio (a), wrinkle angle (b) and radius of curvature ration (c) measurement curves at different curve trajectory placement tensions

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图 12 不同铺放张力下T700/7901预浸丝束有效贴合长度比、褶皱角度与黏结力关系

Figure 12. Relationship between effective tack width ratio, wrinkle angle and tack of T700/7901 prepreg tow at different laying tensions

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图 13 T700/7901预浸料曲线铺贴受力示意图

Figure 13. Schematic diagram of forces on the curve placement of T700/7901 prepreg

F—Laying tension; F_f—Frictional force; F_r—Radial component force of F; F_t—Tangential component force of F; R—Theoretical laying radius; R’—Actual laying radius.

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图 14 不同铺放速率下有效贴合长度比 (a)、褶皱角度 (b) 与曲率半径比 (c) 测量曲线

Figure 14. Effective tack width ratio (a), wrinkle angle (b) and radius of curva ture ration (c) measurement curves at different curve trajectory placement velocities

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图 15 不同铺放速率下T700/7901预浸丝束有效贴合长度比、褶皱角度与黏结力关系

Figure 15. Relationship between effective tack width ratio,wrinkle angle and tack of T700/7901 prepreg tow at different laying velocities

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表 1 不同曲率半径下铺放台尺寸设计

Table 1. Size design of placement table under different curve radius

Laying radius/mm	500	750	1 000	1 500	2 000	2 500
L_OA/L_OB	0.24	0.16	0.12	0.08	0.06	0.048
a/rad	0.190	0.130	0.100	0.067	0.049	0.040
Notes: L_OA—Length of OA; L_OB—Length of OB; a—Rotation arc of the roller.

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表 2 预浸料曲线铺贴工艺参数区间

Table 2. Interval of process parameters for prepreg curve placement

Group	T/℃	P/N	V/(mm·s⁻¹)	F/N
Temperature group	20-40	600	20	4
Pressure group	30	200-1 000	20	4
Velocity group	30	600	20-100	4
Tension group	30	600	20	2-10
Orthogonal test group	20-35	200-800	20-80	2-8
Notes: T—Laying temperature; P—Laying pressure; V—Laying velocity; F—Laying tension.

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表 3 铺放温度对T700/7901预浸料黏结力及弯曲力的影响

Table 3. Influence of laying temperature on the tack and bending of T700/7901 prepreg

Laying temperature/℃	20	25	30	35	40
Tack/(N·(20 mm)⁻¹)	1.315	1.578	2.114	1.045	0.625
Tack CV/%	6.48	5.38	4.85	9.29	13.40
Bending/(N·(20 mm)⁻¹)	0.513	0.427	0.374	0.208	0.139
Bending CV/%	8.42	4.41	9.80	8.31	12.20
Note: CV—Coefficient of variation.

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表 4 铺放压力对T700/7901预浸料黏结力及弯曲力的影响

Table 4. Influence of laying pressure on the tack and bending force of T700/7901 prepreg

Laying pressure/N	200	400	600	800	1 000
Tack/(N·(20 mm)⁻¹)	1.608	1.725	2.114	2.352	2.514
Tack CV/%	6.48	3.74	4.85	6.52	9.59
Bending/(N·(20 mm)⁻¹)	0.384	0.410	0.374	0.365	0.395
Bending CV/%	5.52	3.58	9.80	6.55	7.11

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表 5 铺放张力对T700/7901预浸料黏结力及弯曲刚度的影响

Table 5. Influence of laying tension on the tack and bending of T700/7901 prepreg

Laying tension/N	2	4	6	8	10
Tack /(N·(20 mm)⁻¹)	1.747	2.114	2.294	2.351	2.408
Tack CV/%	7.72	4.85	5.44	8.85	9.58
Bending/(N·(20 mm)⁻¹)	0.380	0.374	0.395	0.368	0.385
Bending CV/%	4.53	9.80	3.48	7.56	5.16

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表 6 铺放速率对T700/7901预浸料黏结力及弯曲刚度的影响

Table 6. Influence of laying velocity on the tack and bending stiffness of T700/7901 prepreg

Laying velocity/(mm·s⁻¹)	20	40	60	80	100
Tack/(N·(20 mm)⁻¹)	2.114	1.682	1.435	1.287	1.098
Tack CV/%	4.85	3.57	4.84	5.52	7.94
Bending/(N·(20 mm)⁻¹)	0.374	0.385	0.368	0.378	0.395
Bending CV/%	9.80	3.52	3.44	6.53	8.19

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表 7 曲线铺贴正交试验结果

Table 7. Orthogonal test results of curve trajectory placement

Group	T/℃	P/N	V/(mm·s⁻¹)	F/N	L	θ	R’/R
1	20	200	20	2	0.31	9.46	2.91
2	20	400	40	4	0.24	10.59	2.23
3	20	600	60	6	0	12.85	2.58
4	20	800	80	8	0	11.31	3.24
5	25	200	40	6	0.53	9.53	1.33
6	25	400	20	8	0.78	3.71	1.64
7	25	600	80	2	0.31	14.73	1.88
8	25	800	60	4	0.43	10.35	1.15
9	30	200	60	8	0.75	8.54	1.53
10	30	400	80	6	0.42	10.9	1.12
11	30	600	20	4	1	0	1.04
12	30	800	40	2	0.84	4.21	1.20
13	35	200	80	4	0.25	10.84	1.02
14	35	400	60	2	0.61	9.04	1.52
15	35	600	40	8	0.71	5.34	1.67
16	35	800	20	6	0.98	2.38	1.08

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表 8 曲线铺贴正交试验结果分析

Table 8. Analysis of curve trajectory placement orthogonal test results

Attribute	Statistics	T/℃	P/N	V/(mm·s⁻¹)	F/N
L	s²	0.27	0.04	0.23	0.038
θ		2.37	1.04	3.52	0.98
R’/R		0.71	0.03	0.08	0.31
L	Significance level			T>V>P>F
θ				V>T>P>F
R’/R				T>F>V>P
Note：s²—Statistical variance.

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