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文章編號(hào) :100026893 (2008) 0320763206
Z2pin植入?yún)?shù)對(duì) X2Cor夾層復(fù)合材料力學(xué)性能的影響
郝繼軍 ,張佐光 ,張蕾 ,李敏 ,孫志杰 (北京航空航天大學(xué)材料科學(xué)與工程學(xué)院 ,北京 100083)
Effects of Z2pin Inserting Parameters on X2Cor Sandwich Mechanical Property
Hao Jijun , Zhang Zuoguang , Zhang Lei , Li Min , Sun Zhijie
(School of Materials Science and Engineering , Beijing University of Aeronautics
and Astronautics , Beijing 100083 , China)
摘 要 :X2Cor夾層復(fù)合材料是一種新型的 Z2pin增強(qiáng)泡沫夾層結(jié)構(gòu) ,具有突出的比強(qiáng)度、
成型工藝 ,在不同的 Z2pin植入?yún)?shù)下制備了 X2Cor夾層復(fù)合材料 ,并對(duì)這種結(jié)構(gòu)材料的平壓和剪切力學(xué)性植入方向等參數(shù)的影響規(guī)律。結(jié)果表明 ,Z2pin植入?yún)?shù)對(duì) X2Cor夾層復(fù)合材料的平壓性能和剪切性能影響顯著。 X2Cor夾層復(fù)合材料平壓性能隨 Z2pin植入角度和植入密度時(shí) ,X2Cor夾層復(fù)合材料平壓強(qiáng)度及模量最大 ;剪切性能隨 Z2pin植入角度的
時(shí) ,剪切強(qiáng)度和模量最大 ;同時(shí) ,X桁架的植入方向?qū)羟行阅芤灿泻艽笥绊?,相同 Z2pin植入密度下 ,沿試樣長(zhǎng)度方向植入的 X桁架含量增加時(shí) ,夾層復(fù)合材料的剪切模量增加 ;X2Cor夾層復(fù)合材料的平壓性能和剪切性能隨 Z2pin植入角度的變化規(guī)律相反 ,Z2pin植入角度在 60°～ 70°之間時(shí) ,X2Cor夾層復(fù)合材料平壓性能與剪切性能均達(dá)到較高值。關(guān)鍵詞 :復(fù)合材料 ;夾層結(jié)構(gòu) ;力學(xué)性能 ;熱壓成型 ;Z2pin中圖分類(lèi)號(hào) : V258 ; TB332 文獻(xiàn)標(biāo)識(shí)碼 :A Abstract : X2Cor sandwich composite is a novel structure which is reinforced by inserting Z2pin in the thick2 ness direction , so that this sandwich structure has a high specific strength and specific stiffness. With dif2 ferent Z2pin inserting parameters , the X2Cor sandwich composites are prepared with hot press molding process. The effects of Z2pin inserting angle , inserting density and inserting direction on compression and shear properties are investigated. Results show that the Z2pin inserting parameters have great effects on X2 Cor sandwich composites. The compression properties of X2Cor sandwich composites are improved by the increase of Z2pin inserting angle and density. The shear properties decrease with the increase of Z2pin inser2 ting angle , and the shear strength and modulus reach the largest when the Z2pin inserting angle arrived 45°. Moreover , the direction of X2truss is very important to shear behavior. The shear modulus is in2 creased with the increase of X2truss in longitudinal direction. Although the effect of inserting angle on the compression performance is contrary to that on shear behavior , both of them can reach higher values when the inserting angle is between 60°and 70°.
Key words : composite; sandwich structure; mechanical property; hot press molding; Z2pin
復(fù)合材料夾層板具有重量輕、高比剛度和高其復(fù)合材料夾層結(jié)構(gòu)力學(xué)性能的研究報(bào)告 [6]。碳比強(qiáng)度等突出優(yōu)點(diǎn) [122] ,在飛機(jī)結(jié)構(gòu)上有著廣泛應(yīng)纖維 Z2pin以 X型交叉網(wǎng)架的形式穿透中間的泡用。現(xiàn)在普遍使用的復(fù)合材料夾層結(jié)構(gòu)由高強(qiáng)度沫芯材 ,嵌入面板中 ,提高了面板與芯材的結(jié)合的上下蒙皮和充填其中的芯子所組成 ,通過(guò)粘結(jié)力。而且 ,由于網(wǎng)架結(jié)構(gòu)的幾何特性 ,結(jié)構(gòu)的抗劑或者模壓共固化將上下蒙皮與芯子膠結(jié)成為整剪、抗壓等性能也得到大幅度提高。這種新材料體剛性結(jié)構(gòu) [325]。2001年美國(guó)陸軍實(shí)驗(yàn)室的 有助于降低飛機(jī)的結(jié)構(gòu)重量 ,增大有效載荷 ,同時(shí)Kunkel和 Sikorsky飛機(jī)公司的 Carstensen等人高的抗損傷能力使飛機(jī)的維護(hù)成本也得以降低 ,先后發(fā)表了關(guān)于一種先進(jìn)的夾層芯材 X2Cor及對(duì)于商業(yè)用途的大型客運(yùn)、貨運(yùn)飛機(jī)有著非常現(xiàn)
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