| 玻璃纤维-不锈钢网混杂增强环氧树脂层合板对球形弹斜冲击响应特性实验研究 |
| |
| 引用本文： | 邓云飞,蔡雄峰,李想,张伟岐,魏刚.玻璃纤维-不锈钢网混杂增强环氧树脂层合板对球形弹斜冲击响应特性实验研究[J].复合材料学报,2021,38(9):2869-2881. |
| |
| 作者姓名： | 邓云飞 蔡雄峰 李想 张伟岐 魏刚 |
| |
| 作者单位： | 中国民航大学航空工程学院,天津300300 |
| |
| 基金项目： | 国家自然科学基金(11702317)；中央高校基本科研业务费资助(3122019077) |
| |
| 摘 要： | 为了研究玻璃纤维-不锈钢网混杂增强环氧树脂层合板在球形弹高速斜冲击下的损伤特性，利用一级气炮对2 mm厚度的玻璃纤维增强环氧树脂复合材料层合板和含一层、三层304不锈钢网的玻璃纤维-不锈钢网混杂增强环氧树脂层合板进行倾角为30°的冲击实验，以揭示304不锈钢网对层合板弹道极限和能量吸收的影响规律，并分析层合板损伤特征及其机理。通过实验发现，含有三层不锈钢网层合板的弹道极限最高，而不含不锈钢网层合板和含一层不锈钢网层合板的弹道极限速度接近。层合板吸收的能量随着弹体速度增加呈现出先增加后趋于平稳，然后急剧上升的趋势。层合板损伤模式为基体开裂和破碎、分层、不锈钢丝拉伸断裂、纤维拉伸断裂和剪切断裂。层合板分层损伤面积随弹体速度增大先增大后减小，最后趋于稳定。当弹体速度较低时，层合板主要发生纤维拉伸断裂、基体开裂、层间有分层损伤产生。随着弹体速度的增大，层合板正面纤维逐渐发生压剪断裂、基体破碎，背面纤维发生严重的拉伸撕裂。
|
| 关 键 词： | 斜冲击 混杂板 弹道极限 能量吸收 失效模式 |
| 收稿时间： | 2020-08-20 |
Experimental study on oblique impact of steel balls on glass fiber-stainless steel mesh hybrid reinforced epoxy laminates |
| |
| Affiliation: | College of Aeronautical Engineering, Civil Aviation University of China, Tianjin 300300, China |
| |
| Abstract: | In order to study the damage characteristics of glass fiber-stainless steel mesh hybrid laminates under high-speed oblique impact, the impact experiments with an angle of 30° were carried out on glass fiber reinforced epoxy laminates with 2 mm thickness and glass fiber-stainless steel mesh hybrid reinforced epoxy laminates with one or three layers of 304 stainless steel mesh by using a one-stage air gun. The effects of 304 stainless steel mesh on the ballistic limit and energy absorption of laminated plates were revealed, and the damage characteristics and mechanism of laminated plates were analyzed. Based on the experiments, it is found that the ballistic limit of the laminates with three layers of stainless steel mesh is the highest, while the ballistic limit velocity of the laminate without stainless steel mesh is close to that of the laminate with one stainless steel mesh. The energy absorbed by the laminate firstly increases with the increase of projectile velocity, and then becomes stable, and increases rapidly finally. The failure modes of laminates are matrix crack, matrix fracture, delamination, tensile fracture and shear fracture of fiber and stainless steel wire tensile fracture. The delamination damage area of laminated plates increases firstly and then decreases with the increase of the velocity of projectile, and finally tends to be stable. When the velocity of the projectile is low, the laminate fiber mainly produces tensile fracture, matrix cracking and delamination damage. With the increase of the velocity of the projectile, compression shear fracture of the front fiber of the laminate gradually occurs, the matrix is broken, and the back fiber has serious tensile tear. |
| |
| Keywords: | |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《复合材料学报》浏览原始摘要信息 |
|
点击此处可从《复合材料学报》下载全文 |
|
