开孔碳纤维层合板层间应力分析  

Interlaminar stress analysis of carbon fiber-reinforced laminated plate with a hole

作　　者：郭绍伟[1] 张永存[1] 宋恩鹏[2] 孙先念[3] 徐雅楠[1] 刘书田[1] 

机构地区：[1]大连理工大学工程力学系,工业装备结构分析国家重点实验室,大连116023 [2]沈阳飞机设计研究所,沈阳110035 [3]大连海事大学交通运输装备与海洋工程学院,大连116023

出　　处：《复合材料学报》2011年第5期228-233,共6页Acta Materiae Compositae Sinica

基　　金：国家重点基础研究(973)计划(2011CB610304);国家自然科学基金项目(10902019,90816025);科技部国家重点实验室专项经费资助项目(S08102)

摘　　要：针对具有典型铺设角[0/45/-45/90]的开孔碳纤维层合板,采用三维有限元数值模拟方法,分析了在单向拉伸载荷作用下孔边附近的层间应力,讨论了界面层参数对层间应力的影响,详细给出了典型铺设角之间层间应力的分布规律和最大层间应力产生的位置。结果表明:对于相同铺设角的界面层,沿厚度方向的位置影响层间应力的大小,但不影响分布趋势;而铺层顺序(如[角度1/角度2]或[角度2/角度1])对层间应力的大小和分布趋势影响则较小。最大层间正应力产生于[-45/90]的界面层,位于与拉伸方向成90°的位置,是外加拉伸应力的51%;最大层间剪应力产生于[-45/0]的界面层,最大层间环向剪应力位于与拉伸方向成74°的位置,是外加拉伸应力的64%;而最大层间径向剪应力位于与拉伸方向成66°的位置,是外加拉伸应力的25%。The interlaminar stresses of a carbon fiber-reinforced laminated plate with a hole were analyzed using three-dimensional finite element numerical simulation.This laminated plate was subjected to uniaxial forces and composed of layers with typical ply angles [0/45/-45/90].The effects of the ply parameters on the interlaminar stress distribution were investigated;in the meantime,the maximum value and detailed distribution of interlaminar stresses in different typical interfaces were presented.The results show that the location of interfaces along thickness only affects the magnitudes of interlaminar stresses but not the trend of distribution,and the stacking sequence（[angle 1/angle 2] or [angle 2/angle 1]） affects neither the magnitudes of interlaminar stresses nor the trend of distribution.Furthermore,the maximum normal stress of interface occurs between [-45/90] layers at 90° from the loading axis with its value reaching 51% of the value of applied stress,the maximum interlaminar shearing stress occurs between layers： the maximum circle shearing stress occurs at 74° with its value reaching 64% of the value of applied stress,and the maximum radial shearing stress occurs at 66° with its value reaching 25% of the value of applied stress.

关 键 词：典型铺设角 开孔层合板 层间应力 自由边效应 界面层参数 

分 类 号：TB330.1[一般工业技术—材料科学与工程]