X-cor夹层结构剪切模量有限元分析  

A Finite Element Analysis of X-cor Sandwich's Shear Modulus

作　　者：党旭丹[1] 王新莉[1] 肖军[2] 

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

出　　处：《武汉大学学报（理学版）》2012年第5期419-424,共6页Journal of Wuhan University:Natural Science Edition

基　　金：河南省教育厅自然科学计划项目(2011B430003)

摘　　要：通过显微镜观察X-cor夹层结构中的Z-pin端部树脂区,提出树脂区椭圆形态的基本假设并给出描述树脂区细观结构的参数方程,建立了一个集结构设计与几何分析为一体的X-cor夹层结构几何分析模型.根据几何分析模型,利用大型有限元软件ANSYS建立X-cor夹层结构剪切模量的有限元模型并计算了剪切模量,研究了Z-pin植入角度、直径和密度的改变对X-cor夹层结构剪切模量的影响.分析结果表明:剪切模量随Z-pin植入角度增加而增加,而且随Z-pin直径和密度增加而增加.通过有限元模型计算,得到了Z-pin结构参数对X-cor夹层结构剪切模量的影响规律,数值计算结果误差范围是±10%,验证了所提有限元模型的合理性,这说明该模型可用于预测其剪切模量.Through the observation of photomicrographs of the resin regions around Z-pin ends in the X-cor sandwich the basic hypothesis of the elliptic configuration of resin regions were proposed. The parametric equations for describing the microscopic structures of resin regions were given. Then the geometric analysis model of X-cor sandwich integrated the structural design and the geometric analysis was established. According to the geometric analysis model the finite element software ANSYS was used to establish the finite element model of the shear modulus of X-cor sandwich and the shear modulus was calculated. The effects of changing Z-pin angle, diameter and density on the shear modulus of X-cor sandwich were analyzed. The numerical analysis results indicate that the shear modulas of X-cor sandwich increases as the Z-pin angle increases, and as the Z-pin diameter and density increase the shear modulus both increase. Via the analysis of finite element model, the influencing trends of parameters of X-cor sandwich to the shear modulus are achieved and the error range is ±10 %. So the rationality of the proposed finite element model is verified and the finite element model can be used to forecast the shear modulus of X-cor sandwich.

关 键 词：X-COR夹层结构 Z-PIN 剪切模量 有限元 

分 类 号：TB322[一般工业技术—材料科学与工程]