弹体侵彻平面薄靶板等效模型建立与仿真模拟  

Establishment and simulation analysis of an equivalent model of a projectile body penetrating flat thin target plate

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作  者:肖有才 王海 范晨阳 邹宇 韩勇 XIAO Youcail;WANG Hail;FAN Chenyang;ZOU Yu;HAN Yong(School of Mechanical and Electrical Engineering,North University of China,Taiyuan 030051,China;Xi'an Institute of Mechatronics and Information Technology,Xi'an 710065,China;Inner Mongolia Test Institute of Aerospace Dynamic Machine,Hohhot 010000,China)

机构地区:[1]中北大学机电工程学院,太原030051 [2]西安机电信息技术研究所,西安710065 [3]内蒙航天动力机械测试所,呼和浩特010000

出  处:《振动与冲击》2024年第24期243-250,共8页Journal of Vibration and Shock

基  金:国家自然科学基金(12372368,11802273);山西省自然科学面上基金(202303021211142)。

摘  要:基于极限穿透速度相等原则,采用量纲分析的方法,推导出适用于不同钢材薄靶板抗尖卵形弹侵彻的等效模型。运用有限元软件LS-DYNA对12.7 mm穿甲弹芯垂直侵彻30CrMnSi靶板和45号钢靶板过程进行仿真,对得到的等效厚度进行拟合,确定30CrMnSi靶板和45号钢靶板等效模型系数。并对30CrMnSi靶板和其等效的45号钢靶板进行12.7 mm穿甲弹芯侵彻试验,两者极限穿透速度误差小于2.7%,验证了等效模型的正确性,该研究可为子弹侵彻火箭发动机等效试验中等效靶板设计提供理论依据和数据参考。The principle of equal limiting penetration velocity was employed to derive an equivalent model applicable to thin target plates of different steel materials,designed to resist the penetration of pointed ovoid bullets.This is achieved through the use of magnitude analysis.The finite element software LS-DYNA was employed to simulate the vertical penetration of the 12.7 mm armor-piercing bullet core through the 30CrMnSi target plate and a 45 steel target plate.The resulting equivalent thickness was used to determine the coefficients of the equivalent model for both the 30CrMnSi target plate and the 45 steel target plate.Furthermore,the 30CrMnSi target plate and its equivalent 45 steel target plate were employed in 12.7 mm armor-piercing bullet core penetration experiments.The two limit penetration speed error was less than 2.7%.This verifies the correctness of the equivalent model.Additionally,the study can be used to validate the penetration of a bullet through a rocket engine,which is equivalent to the aforementioned experiments.This provides a theoretical basis and data reference.

关 键 词:极限穿透速度 弹体侵彻 平面薄靶板 等效模型 

分 类 号:TH212[机械工程—机械制造及自动化] TH213.3

 

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