L型层合梁分层破坏的高阶理论分析  

Higher-order theoretical analysis of L-type laminated beam's delamination

作　　者：陈万吉[1] 王妍[1] 聂雷 黄文超 

机构地区：[1]沈阳航空航天大学辽宁省飞行器复合材料结构分析及数值仿真重点实验室,沈阳110136 [2]中航工业沈飞民用飞机有限公司工程研发中心,沈阳110000

出　　处：《沈阳航空航天大学学报》2015年第1期1-5,共5页Journal of Shenyang Aerospace University

基　　金：国家自然科学基金(项目编号:11402152)

摘　　要：目前国内外有限元软件均采用一阶剪切变形层合板理论,对板壳等结构均不能计算层间应力,不能分析层间分层破坏,这已成为复合材料结构分析的难题。本文基于整体-局部高阶剪切变形理论对软件Abaqus进行二次开发,对L型梁的层间分层破坏进行了分析。对破坏形式及层间应力大小的计算结果与试验结果进行对比,计算与试验结果吻合。高阶理论有限元方法可以准确判断复合材料层合结构失效形式、位置和应力大小。Nowadays, the finite element software both home and abroad are based on one order shear deformation theory, which cannot calculate the inter-laminar stress of the plate and shell structures and analyze the inter-laminar delamination. This has become a difficulty for the analysis of composite structures. On the basis of the global-local higher-order shear deformation theory, the paper made twice developments to the Abaqus to analyze the inter-laminar delamination of L-type. The calculations of the collapse modes and inter-laminar stress can match the experimental results by comparison. The higher-order finite element method can precisely tell the failure type, position and the delamination stress of the composite laminated structures.

关 键 词：复合材料 高阶剪切变形理论 层间应力分析 L型梁的层间分层破坏试验 

分 类 号：TB12[理学—工程力学]