X状Z-pin增强泡沫夹层结构的剪切性能

复合材料学报, 2007, 24(6): 140-146. doi: 10.3321/j.issn:1000-3851.2007.06.024

X状Z-pin增强泡沫夹层结构的剪切性能

杜龙 ^1, , 矫桂琼 ^2, , 黄涛 ^3, , 赵龙 ^4, , 黄峰 ^5,

1.西北工业大学,力学与土木建筑学院,西安,710072

2.西北工业大学,力学与土木建筑学院,西安,710072

3.西北工业大学,力学与土木建筑学院,西安,710072

4.中航一集团,北京航空制造工程研究所,北京,100024

5.中航一集团,北京航空制造工程研究所,北京,100024

基金项目: 国家自然科学基金(10572116) 航空基础科学基金(04B53013)

关键词：夹层结构 , Z-pin增强 , 剪切性能

Shear properties of X-Z-pin reinforced foam core sandwich

通过不同Z-pin角度(15°和25°)和夹芯厚度(8mm和12.7mm)的X状Z-pin增强泡沫夹层材料的剪切性能试验,与相同材料同尺寸的未增强件进行对比,考察X状Z-pin对泡沫夹层结构的增强作用.试验结果表明,X状Z-pin增强使材料的剪切强度和刚度都有较大幅度的提高;同时,Z-pin的加入使该结构具有与传统泡沫夹层材料不同的剪切破坏形式.在此基础上,结合空间网架结构和等效夹杂方法,提出了X状Z-pin增强泡沫夹层结构剪切刚度模型,计算结果与试验值符合良好.结果表明,X状Z-pin增强不仅能大幅度提高泡沫夹层结构的剪切性能,并具有良好的可设计性,可以通过改变Z-pin角度和材料等改变其力学性能.

参考文献

[1]	Carstensen T C,Kunkel E,Magee C.X-cor advanced sandwich core material[C]// 33rd International SAMPE Technical Conference.Covia,CA:SAMPE,2001:452-466.
[2]	O'Brien K T,Paris I L.Exploratory investigation of failure mechanisms in transition regions between solid laminates and X-cor truss sandwich[J].Composite Structures,2002,57:189-204.
[3]	Cartie D,Fleck N.The effect of pin reinforcement upon the through-thickness compressive strength of foam-cored sandwich panels[J].Composites Science and Technology,2003,63:2401-2409.
[4]	Vaidya U K,Nelson S.Processing and high strain rate impact response of multi-functional sandwich composites[J].Composite Structures,2001,52:429-440.
[5]	Rice M C,Fleischer C A,Zupan M.Study on the collapse of pin-reinforced foam sandwich panel cores[J].Experimental Mechanics,2006,46:197-204.
[6]	田旭,肖军,李勇.X-cor夹层结构试制与性能研究[J].飞机设计,2004(1):22-25.Tian Xu,Xiao Jun,Li Yong.Study on X-cor sandwich structure manufacture and its mechanical performance[J].Aircraft Design,2004(1):22-25.
[7]	黄涛,矫桂琼,徐婷婷.Z向增强泡沫夹层结构复合材料[J].纤维复合材料,2005(3):19-23.Huang Tao,Jiao Guiqiong,Xu Tingting.Research development and application of Z-reinforcement foam core sandwich[J].Fiber Composites,2005(3):19-23.
[8]	郑锡涛,孙秦,李野,等.全厚度缝合复合材料泡沫芯夹层结构力学性能研究与损伤容限评定[J].复合材料学报,2006,23(6):29-36.Zheng Xitao,Sun Qin,Li Ye,et al.Mechanical behavior and damage tolerance tests of composites through-thickness stitched foam sandwich panels[J].Acta Materiae Compositae Sinica,2006,23(6):29-36.
[9]	Marascoa A I,Cartie D D R,Partridge I K,et al.Mechanical properties balance in novel Z-pinned sandwich panels:Out-ofplane properties[J].Composites Part A,2006,37(2):295-302.
[10]	Mori T,Tanaka K.Average stress in matrix and average energy of materials with misfitting inclusions[J].Act Metall,1973,21:571-574.
[11]	Mura T.Micromechanics of defects in solids[M].The Netherlands:Martinus Nijhoff Publishers,1987:74-88.

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