X-cor夹层结构的力学性能试验研究  

Experimental Study on Mechanical Properties of X-cor Sandwich

作　　者：党旭丹[1] 张红松[1] 王新莉[1] 肖军[2] 陈海军[1] 

机构地区：[1]河南工程学院机械工程系,郑州451191 [2]南京航空航天大学材料科学与技术学院,南京210016

出　　处：《材料导报》2011年第10期54-58,共5页Materials Reports

基　　金：河南工程学院博士基金(D2010002)

摘　　要：X-cor夹层结构比强度高,比刚度大,有望取代传统蜂窝夹层结构作为航空航天器的主承力结构材料。采用真空固化成型工艺,通过改变Z-pin的植入参数制备了X-cor夹层结构,研究了Z-pin植入角度、植入间距和直径对其平压、剪切和拉伸性能的影响。研究结果表明,Z-pin的植入参数对X-cor夹层结构的力学性能影响显著。随Z-pin植入角度的增加X-cor夹层结构的平压性能降低,剪切性能增强,拉伸模量减小,拉伸强度先增加后减小。随Z-pin植入间距和直径增加,X-cor夹层结构力学性能均增加。与泡沫夹层结构相比,X-cor夹层结构压缩、剪切和拉伸模量的测试值分别提高了1.26～5.15倍、2.50～13.56倍和1.90～2.71倍,压缩、剪切和拉伸测试值分别提高了1.63～9.20倍、1.28～2.03倍和1.01～2.30倍。X-cor sandwich has a high specific strength and specific stiffness and can be expected to replace the traditional honeycomb sandwich and become the main bearing loads structures of aircrafts. Through changing Z-pin＇s inserfing parameters the Xcor sandwich was prepared with vacuum curing molding process. The effects of Z-15in＇s inserting angle, inserting density ,and diameter on compression, shear and tension properties were studied. The results show that Z-pin＇s inserting parameters observably affect X-cor sandwich＇ s mechanical properties. The compression properties of X-cor sandwich are reduced by the increase of Z-pin＇s inserting angle, and shear properties are improved by the increase of Z-pin＇s inserting angle. As Z-pin＇s inserting angle incriease the tension modulus increases, while the tension strength firstly increases and secondly decreases. The mechanical properties increase with the increase of Z- , pin＇s inserting density and diameter. Compared with the foam sandwich, the experimental results of X-cor sandwich＇s compression, shear and tension modulus increase by 1.26-5. 15, 2.50-13. 56 and 1.90~2. 71 times respectively, while the experimental results of compression, shear and tension strength increase by 1. 63-9.20, 1.28-2. 03 and 1, 01-2.30 times respectively.

关 键 词：X-COR夹层结构 压缩性能 剪切性能 拉伸性能 

分 类 号：TB322[一般工业技术—材料科学与工程]