结构参数对CFRP蒙皮-铝蜂窝夹层板低速冲击性能的影响

齐佳旗; 段玥晨; 铁瑛; 侯玉亮; 李成

doi:10.13801/j.cnki.fhclxb.20190815.001

结构参数对CFRP蒙皮-铝蜂窝夹层板低速冲击性能的影响

doi: 10.13801/j.cnki.fhclxb.20190815.001

郑州大学　机械工程学院，郑州 450001

基金项目: 国家自然科学基金(U1833116；U1333201；11402234)

详细信息

通讯作者:
段玥晨，博士，副教授，硕士生导师，研究方向为复合材料冲击损伤　E-mail：duanyc1984@zzu.cn

中图分类号: TB332
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出版历程
- 收稿日期: 2019-06-27
- 录用日期: 2019-07-26
- 网络出版日期: 2019-08-15
- 刊出日期: 2020-06-15

Effect of structural parameters on the low-velocity impact performance of aluminum honeycomb sandwich plate with CFRP face sheets

School of Mechanical Engineering, Zhengzhou University, Zhengzhou 450001, China

摘要

摘要: 针对碳纤维增强树脂复合材料（CFRP）蒙皮-铝蜂窝夹层结构，使用半球头式落锤冲击试验平台进行了低速冲击载荷下蜂窝芯单元尺寸对夹层板冲击性能影响的试验探究，并基于渐进损伤模型、内聚力模型和三维Hashin失效准则，在有限元仿真软件ABAQUS中建立了含蒙皮、蜂窝芯、胶层的CFRP蒙皮-铝蜂窝夹层板精细化低速冲击仿真模型，仿真结果与试验结果吻合较好。利用该数值模型进一步探究了蜂窝芯高度、蒙皮厚度和蜂窝芯壁厚等结构参数对于蜂窝夹层板低速冲击吸能效果的影响。结果表明：增大铝蜂窝芯的单元边长，会减小蜂窝夹层板的刚度，提升夹层板的吸能效果；芯层高度对夹层板的刚度及抗低速冲击性能影响较小；增大蜂窝夹层板的蒙皮厚度，可以提高夹层板的刚度，但会降低夹层板的吸能效果；增大蜂窝芯的壁厚，可以提高夹层板的刚度和抗低速冲击性能。
- CFRP /
- 铝蜂窝夹层板 /
- 低速冲击 /
- 有限元法 /
- 结构参数
Abstract: The effect of the size of honeycomb core unit on the resistance of sandwich plate of carbon fiber reinforced polymer (CFRP) under low-velocity impact load was investigated by using the impact test system of hemisphere-head drop hammer. Based on the continuous damage mechanics model, cohesive element model and 3D Hashin damage criteria, a refined low-velocity impact simulation model for honeycomb sandwich plate with CFRP face sheets, aluminum honeycomb core and cohesive films was established in finite element simulation software ABAQUS. The simulation results are in good agreement with the experimental results. The effects of structural parameters, such as the height of honeycomb core, the thickness of face sheets and the thickness of honeycomb cell wall, on the energy absorption of honeycomb sandwich plate were further investigated by using the numerical model. The results show that increasing the cell side length of aluminum honeycomb core can reduce the stiffness of honeycomb sandwich plate and improve the energy absorption effect of sandwich plate. The core height has little effect on the stiffness and low-velocity impact resistance of the sandwich plate. Increasing the skin thickness of honeycomb sandwich board can improve the stiffness of sandwich board, but reduce the energy absorption effect of sandwich board. Increasing the cell wall thickness can improve the stiffness and low-velocity impact resistance of sandwich board.
- CFRP /
- aluminum honeycomb sandwich plate /
- low-velocity impact /
- finite element method /
- structural parameters

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图 1 落锤式低速冲击试验平台

Figure 1. Low-speed impact test system of drop hammer

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图 2 高速摄像分析平台

Figure 2. High-speed camera analysis platform

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图 3 碳纤维增强树脂复合材料（CFRP）蒙皮-铝蜂窝夹层板几何构型示意图及试件

Figure 3. Schematic of geometric configurations and specimens of aluminum honeycomb sandwich plates with carbon fiber reinforced polymer (CFRP) face sheets

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图 4 内聚力单元的双线性本构模型

Figure 4. Bilinear constitutive model of cohesive element

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图 5 CFRP蒙皮-铝蜂窝夹层板的低速冲击有限元模型

Figure 5. Finite element model of aluminum honeycomb sandwich plate with CFRP face sheets for low-velocity impact simulation

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图 6 试验与仿真中CFRP蒙皮-铝蜂窝夹层板的接触力历程对比

Figure 6. Comparison of experimental and numerical contact force historiesof aluminum honeycomb sandwich plate with CFRP face sheets

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图 7 试验与仿真中落锤的速度历程对比

Figure 7. Comparison of experimental and numerical velocity histories of the impactor

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图 8 A组CFRP 蒙皮-铝蜂窝夹层板试件落锤的动能历程对比

Figure 8. Comparison of kinetic energy histories of the impactor for group A aluminum honeycomb sandwich plate with CFRP face sheets specimens

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图 9 A组CFRP 蒙皮-铝蜂窝夹层板试件落锤的接触力-位移对比

Figure 9. Comparison of contact force-central displacement histories of the impactor for group A aluminum honeycomb sandwich plate with CFRP face sheets specimens

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图 10 B组CFRP 蒙皮-铝蜂窝夹层板试件落锤的接触力历程对比

Figure 10. Comparison of contact force histories of the impactor for group B aluminum honeycomb sandwich plate with CFRP face sheets specimens

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图 11 B组CFRP 蒙皮-铝蜂窝夹层板试件落锤的动能历程对比

Figure 11. Comparison of kinetic energy histories of the impactor for group B aluminum honeycomb sandwich plate with CFRP face sheets specimens

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图 12 B组CFRP 蒙皮-铝蜂窝夹层板试件落锤的接触力-位移对比

Figure 12. Comparison of contact force-central displacement histories of the impactor for group B aluminum honeycomb sandwich plate with CFRP face sheets specimens

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图 13 C组CFRP 蒙皮-铝蜂窝夹层板试件落锤的接触力历程对比

Figure 13. Comparison of contact force histories of the impactor for group C aluminum honeycomb sandwich plate with CFRP face sheets specimens

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图 14 C组CFRP 蒙皮-铝蜂窝夹层板试件落锤的动能历程对比

Figure 14. Comparison of kinetic energy histories of the impactor for group C aluminum honeycomb sandwich plate with CFRP face sheets specimens

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图 15 C组CFRP 蒙皮-铝蜂窝夹层板试件落锤的接触力-位移对比

Figure 15. Comparison of contact force-central displacement histories of the impactor for group C aluminum honeycomb sandwich plate with CFRP face sheets specimens

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图 16 DCFRP 蒙皮-铝蜂窝夹层板组试件落锤的接触力历程对比

Figure 16. Comparison of contact force histories of the impactor for group D aluminum honeycomb sandwich plate with CFRP face sheets specimens

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图 17 DCFRP 蒙皮-铝蜂窝夹层板组试件落锤的动能历程对比

Figure 17. Comparison of kinetic energy histories of the impactor for group D specimens

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图 18 D组CFRP 蒙皮-铝蜂窝夹层板试件落锤的接触力-位移对比

Figure 18. Comparison of contact force-central displacement histories of the impactor for group D aluminum honeycomb sandwich plate with CFRP face sheets specimens

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表 1 CFRP蒙皮的材料参数

Table 1. Mechanical properties of CFRP laminates

T300/7901	Value	Adhesive	Value
${E_1}{\rm{/MPa}}$	125 000	$G_{\rm{n}}^{\rm{C}}{\rm{/(N}} \cdot {\rm{m}}{{\rm{m}}^{{\rm{ - 1}}}}{\rm{)}}$	0.52
${E_2},{E_3}{\rm{/MPa}}$	11 300	$G_{\rm{s}}^{\rm{C}},G_{\rm{t}}^{\rm{C}}{\rm{/(N}} \cdot {\rm{m}}{{\rm{m}}^{ - {\rm{1}}}}{\rm{)}}$	0.92
${G_{12}},{G_{13}}{\rm{/MPa}}$	5 430	${\sigma _{{\rm{n}},\max }}{\rm{/MPa}}$	50
${G_{23}}{\rm{/MPa}}$	3 979	${\sigma _{{\rm{s}},\max }}{\rm{/MPa}}$	94
ν₁₂, ν₂₃	0.3	${\sigma _{{\rm{t}},\max }}{\rm{/MPa}}$	94
ν₂₃	0.42	${K_{\rm{n}}}{\rm{/(N}} \cdot {\rm{m}}{{\rm{m}}^{ - {\rm{3}}}}{\rm{)}}$	100 000
${X_{\rm{T}}}{\rm{/MPa}}$	2 000	${K_{\rm{s} } },{K_{\rm{t} } }{\rm{/(N} } \cdot {\rm{m} }{ {\rm{m} }^{ - {\rm{3} } } }{\rm{)} }$	100 000
${X_{\rm{C}}}{\rm{/MPa}}$	1 100
${Y_{\rm{T}}},{Z_{\rm{T}}}{\rm{/MPa}}$	80
${Y_{\rm{C}}},{Z_{\rm{T}}}{\rm{/MPa}}$	280
$S{\rm{/MPa}}$	120
Notes: E_i(i=1,2,3) is Young’s modulus in i direction; G_ij(i,j=1,2,3) is shear modulus in i-j plane; ν_ij(i,j=1,2,3) is Poisson’s ratio in i-j plane; X_t/X_c and Y_t/Y_c are the tensile/compressive strengths in 1 and 2 directions, respectively; S is shear strength; $G_{\rm{n}}^{\rm{C}}$ is toughness in tension; $G_{\rm{s}}^{\rm{C}}$and $G_{\rm{t}}^{\rm{C}}$ are toughness components in shear; σ_n,max is maximum nominal stress of normal-only mode; σ_s,max and σ_t,max are maximum nominal stress in 1 and 2 directions, respectively; K_n is stiffness in tension; K_s and K_t are stiffness components in shear.

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表 2 Al 3003-H19铝箔材料参数

Table 2. Material properties of Al3003-H19 aluminum alloy foil

Property	Value
Density/(kg·m⁻³)	2 730
Young’s modulus/GPa	70
Poisson’s ratio	0.3
Yield strength/MPa	183

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表 3 CFRP蒙皮-铝蜂窝夹层板的结构参数

Table 3. Structural parameters of aluminum honeycomb sandwich plate with CFRP face sheets

Label	Cell side length ${L_{\rm{c}}}$/mm	Core height ${H_{\rm{c}}}$/mm	Facesheet thickness ${T_{\rm{f}}}$/mm	Cell wall thickness ${T_{\rm{c}}}$/mm
A1	2	20	1.2	0.06
A2	4	20	1.2	0.06
A3	6	20	1.2	0.06
B1	4	10	1.2	0.06
B2	4	20	1.2	0.06
B3	4	30	1.2	0.06
C1	4	20	1.2	0.06
C2	4	20	1.8	0.06
C3	4	20	2.4	0.06
D1	4	20	1.2	0.06
D2	4	20	1.2	0.10
D3	4	20	1.2	0.14

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表 4 试验与仿真中蜂窝芯损伤深度δ的对比

Table 4. Comparison of experimental and numerical deformations δ of honeycomb cores

Label	Top face sheet	Cross-section
Label	Top face sheet	Experiment	Simulation-Honeycomb core
A1
A2
A3

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表 5 仿真预测的B组CFRP蒙皮-铝蜂窝夹层板冲击损伤

Table 5. Simulation predicted impact damage of group B aluminum honeycomb sandwich plate with CFRP face sheets

Label	Cross-section
Label	Honeycomb sandwich plate	Honeycomb core
B1
B2
B3

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表 6 仿真预测的C组CFRP蒙皮-铝蜂窝夹层板冲击损伤

Table 6. Simulation predicted impact damage of group C aluminum honeycomb sandwich plate with CFRP face sheets

Label	Cross-section
Label	Honeycomb sandwich plate	Honeycomb core
C1
C2
C3

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表 7 仿真预测的D组CFRP蒙皮-铝蜂窝夹层板冲击损伤

Table 7. Simulation predicted impact damage of group D aluminum honeycomb sandwich plate with CFRP face sheets

Label	Cross-section
Label	Honeycomb sandwich plate	Honeycomb core
D1
D2
D3

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表 8 不同结构参数的CFRP蒙皮-铝蜂窝夹层板组件吸能占比

Table 8. Absorbed energy rates by components of aluminum honeycomb sandwich plate with CFRP face sheets with different structural parameters %

Parameters	Cell side length ${L_{\rm{c}}}$			Core height ${H_{\rm{c}}}$			Facesheet thickness ${T_{\rm{f}}}$			Cell wall thickness ${T_{\rm{c}}}$
Parameters	A1	A2	A3	B1	B2	B3	C1	C2	C3	D1	D2	D3
Upper plate	20.43	17.29	16.49	19.53	17.29	16.04	17.29	26.97	31.72	17.29	20.88	30.02
Honeycomb	45.16	50.01	58.60	38.45	50.01	57.35	50.01	43.20	39.78	50.01	45.61	41.75
Lower plate	1.88	1.70	2.51	2.15	1.70	1.70	1.70	1.08	0.72	1.70	2.69	3.32
Impactor	32.53	31.00	22.40	39.87	31.00	24.91	31.00	28.05	27.78	31.00	30.82	24.91
Sandwich plate	67.37	69.00	77.60	60.13	69.00	75.09	69.00	71.95	72.22	69.00	69.18	75.09

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