摘要
采用53式7.62 mm穿燃弹侵彻不同约束应力下AD95陶瓷复合靶,观察了回收靶板的弹击损伤形貌,分析了弹靶作用过程和约束应力对AD95陶瓷弹击损伤特征的影响规律.结果表明,随着约束应力的增大,陶瓷面板损伤减小,完整性提高;当约束应力达到193 MPa时弹靶之间出现界面击溃现象.约束应力条件下弹击后4 mm厚陶瓷面板上存在两种同轴锥形裂纹,所构成的两个锥形体之间是陶瓷粉碎区;约束应力提高了陶瓷动态强度,抑制了陶瓷粉碎区的生长,延长了弹靶作用中dwell的持续时间,快速消耗了弹丸动能,减小了靶板损伤.
The ballistic properties of ceramic AD95 subjected to different confined stresses were studied on 7.62 mm API,and the impact damage characteristics of recovered tiles were examined.It shows that by increasing the confined stress,the ballistic property as well as the integrity of ceramic tile improved gradually;especially when the confined stress was more than 193 MPa,the projectile material was forced to flow radically outwards on the surface of the ceramic without penetrating significantly,i.e.interface defeat.There were two kinds of crack cone lined up in the axis of penetration within the 4 mm thickness ceramic tile with confined stress,and between these two cones was the zone of ceramic crushing.With the increase of confined stress,ceramic strength was improved,while growth of crushing zone was restrained,and the time of dwell was extended.As a result,the ballistic property was improved,and the damage degree decreased.
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2010年第5期589-593,共5页
Transactions of Beijing Institute of Technology
基金
国家部委预研项目(9140A12030307)
关键词
AD95陶瓷
约束应力
抗弹性能
界面击溃
ceramic AD95
confined stress
ballistic property
interface defeat
