摘要
针对太空中碎片高速撞击航天器的问题进行研究,提出了基于J-H模型对球形弹丸高速撞击陶瓷板的局部穿孔行为进行数值模拟,利用ANSYS-AUTODYN动力学程序得出高速撞击超高温陶瓷靶板后的应力云图和损伤云图,由此可知,随着弹丸速度的增大,靶板内最大应力随之减小,但应力集中范围随着速度的增大而增大,板靶内温度应力增加,损伤区域直径也随之增大。且陶瓷破碎后形成的碎片云在速度很小时呈椭球状,随着速度增大碎片云趋向于圆形。
The J-H model-based numerical simulation of the local perforation behavior of a spherical projectile hitting a ceramic plate at high velocity is proposed as a research method,and the ANSYS-AUTODYN dynamics program is used to derive the stress and damage clouds after the high-speed impact on the ultra-high temperature ceramic target plate.As the velocity of the projectile increases,the maximum stress in the target plate decreases.But the stress concentration range increases with the increase of velocity,the temperature stress in the target plate increases,and the diameter of the damage area also increases.The fragment cloud formed after ceramic fragmentation is ellipsoidal when the velocity is very small,and then tends to be more and more circular as the velocity increases.
作者
王一宁
刘宝良
李桥桥
石晓君
何茜
黄家亮
WANG Yining;LIU Baoliang;LI Qiaoqiao;SHI Xiaojun;HE Xi;HUANG Jialiang(College of Architectural Engineering,Guangdong University of Petrochemical Technology,Maoming 525000,China;College of Civil Engineering,Dalian Nationalities University,Dalian 116000,China;Science College,Heilongjiang University of Science and Technology,Harbin 150022,China)
出处
《广东石油化工学院学报》
2022年第6期40-43,共4页
Journal of Guangdong University of Petrochemical Technology
基金
广东省重点领域研发计划项目(2019B111102001)
广东石油化工学院科研基金人才引进项目(2019rc024)。
关键词
超高温陶瓷
高速撞击
J-H模型
数值模拟
super ultra-high temperature ceramic
hypervelocity impact
J-H model
numerical simulation
