三维正交机织复合材料的弹道性能和破坏模式  

Ballistic property and damage modes of 3-D orthogonal woven composites

作　　者：余育苗[1] 王肖均[1] 李永池[1] 王志海[1] 

机构地区：[1]中国科学技术大学近代力学系,安徽合肥230027

出　　处：《爆炸与冲击》2009年第5期523-528,共6页Explosion and Shock Waves

基　　金：国家自然科学基金项目(10572134);国防科技重点实验室基金项目(51453030205ZK0101)

摘　　要：利用球形弹和柱形弹对Kevlar/乙烯基树脂和E-玻璃纤维/乙烯基树脂三维正交机织复合材料进行弹道实验。结果表明,材料对球形弹的抗侵彻能力比对柱形弹的强;Kevlar/乙烯基树脂比E-玻璃纤维/乙烯基树脂具有更好的抗弹侵彻性能;迎弹面以压缩剪切破坏为主,而背面则以纤维拉伸破坏模式为主;z向纤维的存在,提高了三维正交机织复合材料的面内强度,使之不易发生分层、鼓包等破坏现象,其结果使得面内吸能为其主要吸能机制。Ballistic experiments were performed for Kevlar/Vinyl and E-glass/Vinyl 3D orthogonal woven composites （3D-OWC） impacted by spherical and cylindrical bullets.The results show that the anti-penetration abilities of the targets against spherical bullets are higher than those against cylindrical bullets and the absorption energy per unit area density of Kevlar/Vinyl 3D-OWC is more than that of E-glass/Vinyl 3D-OWC.The major failure mechanisms at the impact sides of the targets are shear and compression failure,but only tension failure can be observed at the back sides of the targets.The z-fibers can improve the in-plane strength of 3D-OWC and the in-plane energy absorption is the major energy absorption mechanism of 3D-OWC.

关 键 词：爆炸力学 吸能机制 弹道侵彻 三维正交机织复合材料 E-玻璃纤维 

分 类 号：O383[理学—流体力学] O315[理学—力学]