摘要
为了研究UHMWPE纤维层合板在破片冲击下弹道极限、变形过程与失效模式等弹道特性,开展了质量0.716 g球形硬质合金破片以不同速度,侵彻UHMWPE纤维层合板试验;结果表明,硬质合金球形破片侵彻UHMWPE纤维层合板能力较同质量球形钢制品牌强;破片速度高于弹道极限时,入射速度与剩余速度线性相关,高速冲击时应考虑层合板的应变率效应对破片能量损失的影响;当UHMWPE纤维层合板在破片侵彻速度为弹道极限时,背面鼓包高度最大;层合板失效模式包括剪切冲塞破坏、拉伸变形破坏、分层破坏和基体开裂破坏等形式,破片冲击后分层破坏使层合板正反面均发生凸起,剪切冲塞破坏为主要破坏形式。
To study the ballistic limit,deformation process and failure mode of UHMWPE fiber laminates impacted by cemented carbide fragments,experiments were carried out on the penetration of 0.716 g spherical cemented carbide fragments into UHMWPE fiber laminates.The results show that penetration ability of cemented carbide fragments into UHMWPE fiber laminates is stronger than that of steel balls.When the fragment velocity is higher than the ballistic limit,the incident velocity is linearly related to the residual velocity.The effect of strain rate on the energy loss of the fragments should be considered during high-speed impact.UHMWPE fiber laminate includes shear plug failure,tensile deformation failure,delamination crack failure,matrix crack failure,and shear plug as the main failure form.
作者
冯志威
董方栋
王志军
FENG Zhiwei;DONG Fangdong;WANG Zhijun(School of Mechatronics Engineering, North University of China, Taiyuan 030051, China;Science and Technology on Transient Impact Laboratory, Beijing 102202, China)
出处
《兵器装备工程学报》
CAS
CSCD
北大核心
2021年第1期69-73,共5页
Journal of Ordnance Equipment Engineering
基金
国家自然科学基金项目(11572291)
国防基础科研项目(JCKYS2019209C001)。
