芳纶织物层压复合材料的动态压缩性能研究  

Dynamic Compressive Performance of Aramid Fabric Laminated Composite

作　　者：周凯[1] 杨斌[1] 熊杰[1] 

机构地区：[1]浙江理工大学先进纺织材料与制备技术教育部重点实验室,杭州310018

出　　处：《浙江理工大学学报（自然科学版）》2008年第1期6-9,共4页Journal of Zhejiang Sci-Tech University(Natural Sciences)

基　　金：国家自然科学基金项目(10372092);长江学者和创新团队发展计划资助项目(IRT0654)

摘　　要：用于抗冲击侵彻的低树脂含量芳纶织物层压复合材料（树脂质量分数在14%-20%）具有与一般结构复合材料不同的性质。利用分离式Hopkinson压杆装置对该复合材料进行了高应变率下的面外压缩试验,并在万能试验机下进行了准静态的压缩。获得3个高应变率及准静态下的应力—应变曲线,并观察不同应变率下的破坏形貌。结果表明：低树脂含量芳纶织物层压复合材料的应力和应变是与应变率相关的,与准静态相比,高应变率下的最大应力和失效应变都较小;高应变率范围内（1600-2200 s^-1）,随着应变率的增加,最大应力呈下降的趋势。The aramid fabric laminated composite with low resin mass fraction （about 14% to 20%） used as anti-impact and bullet-proof material has special mechanical behaviors which are different from normal structural composites. In this paper, the high strain rate through-the-thickness compressive performance of this composite is studied by a Split Hopkinson Pressure Bar （SHPB）, and the quasi-static compression is tested using the material universal testing machine. The stress-strain plots at 3 high strain rates and quasi-static are obtained, and the fracture at different strain rates is observed. The results indicate that the stress and strain of this composite are rate sensitive： compared with the quasi-static situation, the maximum stress and the failure strain at high strain rates are lower; the maximum stress decreases with the in- creasing of strain rate in the high strain rate range （1600 s^-1 to 2200 s^- 1）.

关 键 词：芳纶 树脂含量 复合材料 高应变率 压缩 

分 类 号：TB332[一般工业技术—材料科学与工程]