X-cor夹层结构剪切模量实验与分析  

Experiment and Analysis on Shear Modulus of X-cor Sandwich Structures

作　　者：李勇[1] 肖军[1] 谭永刚[1] 原永虎[1] 党旭丹[1] 

机构地区：[1]南京航空航天大学材料科学与技术学院,南京210016

出　　处：《南京航空航天大学学报》2008年第6期831-835,共5页Journal of Nanjing University of Aeronautics & Astronautics

基　　金：军品配套项目

摘　　要：以新型高性能X-cor夹层结构为对象,实验研究了Pin的植入角为30°和体积分数为0.49%的情况下,X-cor夹层结构的纵向剪切模量。与纯泡沫夹层结构相比,X-cor夹层结构密度增加24%,剪切模量提高近7倍。在实验基础上,建立了X-cor夹层结构有限元分析模型,分析了Pin植入角、Pin直径以及Pin分布密度对X-cor夹层结构剪切模量的影响。有限元计算与实验结果对比表明,该有限元模型预测值与实验结果误差很小。The longitudinal shear modulus of the X-cor sandwich structure with 30° Pin angle and 0.49M Pin volume fraction is studied compared with the foam sandwich structure. The longitudinal shear modulus of the X-cor sandwich structure increases by 7 times with an only 24% increase in its density. Based on the experiment, a finite element analysis model is established to predict the longitudinal shear modulus of X-cor sandwich structures. The influences of the angle, the diameter and the distributing density of Pin on the longitudinal shear modulus of X-cor sandwich structures are analyzed using the finite element model. The result proves that prediction results with the finite element model are in good agreement with experimental data.

关 键 词：复合材料 夹层结构 X-cor 剪切模量 有限元 

分 类 号：TB332[一般工业技术—材料科学与工程]