| 动态压缩下一种碳纤维织物增强复合材料的各向异性力学性能实验研究 |
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| 引用本文： | 蒋邦海,张若棋.动态压缩下一种碳纤维织物增强复合材料的各向异性力学性能实验研究[J].复合材料学报,2005,22(2):109-115. |
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| 作者姓名： | 蒋邦海 张若棋 |
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| 作者单位： | 国防科技大学理学院应用物理系, 长沙 410073 |
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| 摘 要： | 为获得一种碳纤维二维正交平纹机织布增强树脂基复合材料准静态和动态压缩力学性能, 对其三个主方向(垂直于碳布方向、碳布经向、碳布纬向) , 分别利用Inst ron 试验机和SHPB 实验技术, 进行了准静态压缩和动态压缩实验。得到了三个主方向从低应变率(10 -3 / s) 到高应变率(约103 / s) 下的压缩应力2应变曲线和压缩强度, 并通过分析得到了三个主方向上的动态压缩响应特点: 垂直于碳布方向的力学性能及其与应变率的相关性主要由树脂基体所控制; 碳布经向和纬向的力学性能主要由碳纤维所控制, 并且和纤维初始微屈曲相关。最后, 分别给出三个主方向上的压缩强度和弹性模量与应变率相关性的表达式。
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| 关 键 词： | 碳纤维 平纹机织 复合材料 各向异性 动态性能 SHPB |
| 文章编号： | 1000-3851(2005)02-0109-07 |
| 收稿时间： | 2004-04-05 |
| 修稿时间： | 2004-07-09 |
DYNAMIC COMPRESSIVE MECHANICAL PROPERTIES OF A CARBON FIBERWOVEN REINFORCED COMPOSITE: EXPERIMENTAL STUDY |
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| JIANG Banghai,ZHANG Ruoqi.DYNAMIC COMPRESSIVE MECHANICAL PROPERTIES OF A CARBON FIBERWOVEN REINFORCED COMPOSITE: EXPERIMENTAL STUDY[J].Acta Materiae Compositae Sinica,2005,22(2):109-115. |
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| Authors: | JIANG Banghai ZHANG Ruoqi |
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| Affiliation: | Applied Physics Department, Science College, National University of Defense Technology, Changsha 410073, China |
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| Abstract: | To understand the quasistatic and dynamic compressive mechanical properties of a kind of carbon fiber two-dimensional orthogonal plain woven reinforced polymer matrix composite, numbers of quasistatic and dynamic compression experiments in its three principal directions (the vertical direction of the carbon cloth, and also the warp and fill directions in the carbon cloth) were conducted, by means of Instron apparatus and SHPB technology respectively. The compressive stress-strain curves and compressive strength were achieved in each direction in a large strain rate range (from strain rate 10~(-3)/s to about 10~3/s). The experimental results show that the dynamic performance of this composite in each three principal directions has its own characteristics: in the vertical direction of the carbon cloth, the mechanical property and the strain rate effect are matrix-dominated; in the warp or fill direction in the carbon cloth, the carbon fiber and its initial waviness master the mechanical property. Two formulas were proposed to model the relationship of the compressive strength and elastic modulus with the strain rate. |
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| Keywords: | SHPB |
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