|
|
几种高性能纤维束的冲击动力学性能实验研究
Experimental study on the dynamic properties of high strength fiber clusters
查看参考文献7篇
|
文摘
|
利用直拉式Hopkinson装置研究了碳纤维、无碱E玻璃纤维、Kevlar 49/964/964c、Twaron2000、Dyneema Sk66等纤维的动态拉伸性能。与准静态加载条件下相比，纤维束的拉伸强度基本与应变速率无关（玻璃纤维除外），而纤维束的弹性模量和失效应变随应变率的升高而明显变大。从高分子物理以及两种无机纤维的内部微观结构特征对纤维的力学性能与加载速率的关系进行了初步的物理阐释。讨论了实验数据的发散原因。 |
|
其他语种文摘
|
Dynamic behaviors of several kinds of high strength fibers, including Kevlar, UHMWPE, glass fibers, carbon fibers etc., were studied experimentally with split Hopkinson tension-bar. The effect of strain rate on the modulus, strength, failure strain and failure characteristics) under impact loading, was analyzed with the measured stress vs. strain curves and results were discussed in terms of the mechanism of high velocity deformation in fibers. The present study will benefit to understand the energy absorption mechanism and to build up the constitutive law of composite plates reinforced by high strength fibers. |
|
来源
|
爆炸与冲击
,2003,23(4):355-359 【核心库】
|
|
关键词
|
材料力学
;
冲击力学性能
;
Hopkinson装置
;
高性能纤维
;
高应变率
|
|
地址
|
中国科学院力学研究所, 北京, 100080
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
1001-1455 |
|
学科
|
力学 |
|
基金
|
国家自然科学基金
|
|
文献收藏号
|
CSCD:1168305
|
参考文献 共
7
共1页
|
|
|
了解气象卫星更多信息，请访问