芯材高度对整体中空复合材料力学性能的影响  

Influence of core height on the mechanical properties of 3D integrated hollow composites

作　　者：曹海建[1] 钱坤[1] 盛东晓[1] 汤继忠[1] 

机构地区：[1]江南大学纺织服装学院,江苏无锡214112

出　　处：《上海纺织科技》2010年第9期54-57,共4页Shanghai Textile Science & Technology

基　　金：江苏省科技支撑项目(BE2008017)

摘　　要：整体中空复合材料是由纤维连续织造呈整体中空结构的新型夹芯材料,具有质轻、高强、高模、可设计等特点。研究了整体中空复合材料在拉伸、压缩、剪切、弯曲等载荷作用下的力学特性,重点分析了芯材高度对材料力学性能的影响。结果表明:整体中空复合材料的侧拉、弯曲破坏模式为脆性破坏,侧压为芯材失稳破坏,剪切为"先剪后拉"破坏模式;随芯材高度的增加,材料的侧拉、侧压和弯曲强度增加,剪切强度降低。研究结果为该类材料的结构优化设计和性能分析奠定了基础。The 3D integrated hollow composites are a newly developed sandwich structure of excellent properties as light weight,high strength,high modulus and good designability,etc.In the paper,the mechanical characteristics of the 3D integrated hollow composites under tensile,compression,shearing and flexural loads are studied with the focus on the effect of core height on the mechanical properties investigated.The result indicates that the damage modulus of side tension and flexural is brittle failure,and the side compression makes instability of core,and shearing is ＂first shear then tensile＂.The side tensile strength,side compression strength and flexural strength increase but the shearing strength decreases with the increase of core height.The result contributes to the design optimization of the 3D sandwich composites.

关 键 词：复合材料 力学性能 拉伸试验 压缩试验 剪切试验 弯曲试验 芯材高度 

分 类 号：TB332[一般工业技术—材料科学与工程]