梯形格栅结构增强泡沫夹芯复合材料平压性能

石昌; 王继辉; 朱俊; 倪爱清; 李想

doi:10.13801/j.cnki.fhclxb.20210506.002

梯形格栅结构增强泡沫夹芯复合材料平压性能

doi: 10.13801/j.cnki.fhclxb.20210506.002

石昌^{1, 2,},
王继辉^1, ,,
朱俊^2,,
倪爱清³,
李想²

1.
武汉理工大学　材料科学与工程学院，武汉 430070
2.
洛阳船舶材料研究所，洛阳 471039
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: 中央军委装备发展部预先研究项目(41422060402)

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　 E-mail：jhwang@whut.edu.cn

中图分类号: TB332
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- 被引次数: 0
出版历程
- 收稿日期: 2021-03-08
- 修回日期: 2021-04-13
- 录用日期: 2021-04-30
- 网络出版日期: 2021-05-06
- 刊出日期: 2022-02-01

Flatwise compression properties of trapezoidal lattice-web reinforced foam core sandwich composites

SHI Chang^{1, 2
,},
WANG Jihui^{1
, ,},
ZHU Jun^2
,,
NI Aiqing³,
LI Xiang²

1.
School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
2.
Luoyang Ship Material Research Institute, Luoyang 471039, China
3.
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China

摘要

摘要: 设计了一种梯形格构增强泡沫夹芯板，并采用真空辅助树脂灌注(VARI)工艺制备了多种不同结构参数的格构增强泡沫夹芯板。实验研究了夹芯板在平面压缩载荷下的失效模式与力学性能，考察了夹芯板结构参数(试样尺寸、格构腹板角度、格构腹板厚度)对夹芯板比压缩强度、比压缩模量与比吸能的影响规律。结果表明：格构增强泡沫夹芯板主要破坏模式为格构腹板的断裂与屈曲；夹芯板中泡沫芯材与格构腹板协同增强；60°夹角格构增强夹芯板相对于无格构增强夹芯板的比压缩强度、比压缩模量和比吸能分别提高了89.4%、137.9%、45.2%；格构增强泡沫夹芯板压缩性能随着格构腹板角度、格构腹板厚度的增加而提高。这类夹芯板的设计为船舶与海洋工程领域轻质夹芯复合材料的应用提供了指导。
- 夹芯结构复合材料 /
- 格栅结构 /
- 破坏模式 /
- 平压性能 /
- 比吸能
Abstract: Trapezoidal lattice-web reinforced foam core sandwich composites with different structural parameters were designed and manufactured by the vacuum assisted resin infusion (VARI) process. The failure modes and mechanical properties of the sandwich panels in flatwise compression loading were studied experimentally. Also, the effects of structural parameters (specimen size, lattice-web angle, lattice-web thickness) on specific compression strength, specific compression modulus and specific energy absorption were investigated. The results show that the main failure modes of the lattice-web reinforced sandwich panels are the fracture and buckling of lattice-web, and the synergistic enhancement effect between foam core and lattice-web is revealed. Compared with the control specimen, the specific compression strength, specific compression modulus and specific energy absorption of the sandwich panel with 60° lattice-web increase by 89.4%, 137.9% and 45.2%, respectively. The compression properties increase with the increase of the angle and thickness of lattice-web. The conclusions above provide reference for the design and application of lightweight sandwich composites in the ship and ocean engineering.
- sandwich composite /
- lattice-web /
- failure mode /
- flatwise compression properties /
- specific energy absorption

HTML全文

图 1 梯形格栅结构增强泡沫夹芯板示意图

Figure 1. Schematic diagram of trapezoidal lattice-web reinforced foam core sandwich panels

PVC—Polyvinyl chloride; h_c, h_f, h_F, a and θ—Thickness of foam core, face sheets and lattice-web, half of the span length and the angel between the lattice-web and the face sheet, respectively

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图 2 梯形格栅结构增强泡沫夹芯板制作工艺流程

Figure 2. Manufacturing process of trapezoidal lattice-web reinforced foam core sandwich panels

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图 3 平面压缩实验装置图

Figure 3. Experimental apparatus of flatwise compression

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图 4 梯形格栅结构增强泡沫夹芯板平压破坏模式

Figure 4. Flatwise compression failure mode of trapezoidal lattice-web reinforced foam core sandwich panels

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图 5 梯形格栅结构增强泡沫夹芯板断层扫描图

Figure 5. Tomogram of trapezoidal lattice-web reinforced foam core sandwich panels

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图 6 梯形格栅结构增强泡沫夹芯板平压破坏模式^[24]

Figure 6. Flatwise compression failure mode of ftrapezoidal lattice-web reinforced foam core sandwich panels^[24]

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图 7 梯形格栅结构增强泡沫夹芯板平面压缩载荷-位移曲线

Figure 7. Flat-wise compression load-displacement curves of trapezoidal lattice-web reinforced foam core sandwich panels

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图 8 梯形格栅结构增强泡沫夹芯板试样比压缩强度与比压缩模量

Figure 8. Specific compression strength and specific compression modulus of trapezoidal lattice-web reinforced foam core sandwich panels specimens

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图 9 不同结构参数梯形格栅结构增强泡沫夹芯板比吸能值

Figure 9. Specific energy absorption values of trapezoidal lattice-web reinforced foam core sandwich panels with different structural parameters

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表 1 梯形格栅结构增强泡沫夹芯板试样信息表

Table 1. Details of trapezoidal lattice-web reinforced foam core sandwich panels specimens

Specimen	N	A/(°)	S	L/mm	W/mm	H/mm
N1A0S0	1	–	–	76	76	36
N2A0S0	2	–	–	152	152	36
N3A0S0	3	–	–	228	228	36
N1A60S2	1	60	2	76	76	36
N2A60S2	2	60	2	152	152	36
N3A60S2	3	60	2	228	228	36
N2A75S2	2	75	2	116	116	36
N2A90S2	2	90	2	84	84	36
N2A60S1	2	60	1	152	152	36
N2A60S3	2	60	3	152	152	36
Notes: N—Number of RVEs of the specimen; A—Angle between the lattice-web and the lower face sheet; S—Number of layers of S-glass cloth laid on the lattice-web; L—Length of the specimen; W—Width of the specimen; H—Thickness of the specimen.

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表 2 梯形格栅结构增强泡沫夹芯板试样面密度

Table 2. Area density of trapezoidal lattice-web reinforced foam core sandwich panels specimens

Specimen	N2A0S0	N2A60S1	N2A60S2	N2A60S3	N2A75S2	N2A90S2
Area density/(kg·m⁻²)	14.97	16.12	17.18	18.22	17.69	17.98

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