X-cor夹层结构压缩模量有限元分析  

Finite Element Modeling Analysis of Compressive Modulus About X-cor Sandwich

作　　者：党旭丹[1] 谭永刚[1] 肖军[1] 李勇[1] 原永虎[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：《材料工程》2009年第1期50-54,共5页Journal of Materials Engineering

摘　　要：通过两种有限元模型的对比,提出了符合实际的X-cor夹层结构压缩模量有限元计算模型,利用大型有限元软件ANSYS对其压缩模量进行了数值计算,得到了X-cor夹层结构的应力场和压缩模量。研究了Z-pin半径、密度、植入角度和体积分数的改变对模型压缩模量的影响。结果表明:X-cor夹层结构压缩模量随Z-pin植入角度增加而减小,随Z-pin半径、密度和体积分数增加而增加,且与Z-pin体积分数呈线性关系,改变Z-pin半径与改变Z-pin密度对X-cor夹层结构压缩模量影响是等效的。通过有限元模型的计算,得到了X-cor夹层结构参数对其压缩模量的影响规律,验证了所提有限元模型的合理性。Through the contrast of two finite models a finite element computational model of compressive modulus about X-cot sandwich was proposed. The finite element software ANSYS was used in the computation of compressive modulus. Through numerical analysis the stress field and compressive modulus of X-cot sandwich were achieved, the effect of changing radius, density, angle and volume fraction of Z-pin to the compressive modulus of X-cot sandwich was analyzed. The numerical analysis results indicate that as the radius, density and volume fraction of Z-pin increase the compressive modulus of X-cot sandwich increases,as the angle of Z-pin increases the compressive modulus of X-cor sandwtch decreases and the compressive modulus of X-cor sandwich has a linear relation to the volume fraction of Z-pin. In addition changing radius of Z-pin and changing density of Z-pin have a same effect to the compressive modulus of X-cor sandwich. Via the computation of finite model the influencing trends of the X-cor sandwich parameters to its compressive modulus are achieved and the rationality of the proposed finite model is verified.

关 键 词：X-COR夹层结构 Z-PIN 压缩模量 有限元 

分 类 号：TB322[一般工业技术—材料科学与工程]