三维整体中空复合材料压缩性能的有限元分析  

Finite element analysis of the compressive properties of 3D integrated sandwich composites

作　　者：曹海建[1] 钱坤[1] 魏取福[1] 李鸿顺[1] 

机构地区：[1]江南大学纺织服装学院,无锡214112

出　　处：《复合材料学报》2011年第1期230-234,共5页Acta Materiae Compositae Sinica

基　　金：江苏省科技支撑计划项目(BE2008017)

摘　　要：利用有限元软件ANSYS,建立了三维整体中空复合材料结构模型,进行压缩力学性能分析。利用该模型,以芯材高度、芯材密度和材料特性(弹性模量)为参数,详细研究了其对材料压缩性能的影响,并对其影响特征进行了分析和讨论。结果表明:三维整体中空复合材料在受压状态下,芯材与上下面板相接处应力最大,最容易发生压缩破坏;材料的压缩性能随着芯材密度、材料弹性模量的增加而提高,随着芯材高度的增加而下降。该研究结果可为整体中空复合材料的结构优化提供参考。A new structual model was developed for the compressive analysis of 3D integrated sandwich composites by using the finite element software ANSYS.The influence of pile height,pile density and material elastic modulus of the 3D composites on the compressive properties was studied in detail,and the influence characterizations were analyzed and discussed too.The results show that the maximum value of the stress appears in the interface between pile and face-sheet when the 3D composites are subject under compressive loads,in which the composites damage easily.The compressive properties of the 3D composites increase with the increase of the pile density,material elastic molulus,and decrease with that of the pile height.The results provide reference for the structure optimum of the 3D composites.

关 键 词：整体中空复合材料 压缩性能 芯材高度 芯材密度 有限元 模量 

分 类 号：TB332[一般工业技术—材料科学与工程]