摘要
针对某火箭炮闭锁机构在强制解脱过程中产生的撞击失效问题,本文分析了影响撞击失效的主要因素,结合一般力学理论,推导出闭锁机构在火箭弹撞击下的失效过程规律,并建立了力学模型。应用该模型对某火箭弹闭锁机构的撞击失效过程进行分析,利用有限元仿真与建立的等效实验相结合的方法,验证了真实环境下闭锁机构撞击失效过程的规律,仿真结果和实验结果均与理论分析相吻合。结果表明:该文模型和方法适于闭锁机构撞击失效过程的理论和实验研究,可为撞击失效性能评估提供基础方法。
Considering that impact failure of the locking mechanism of a rocket gun occurs in the process of mandatory disengagement,the main factors affecting impact failure were analyzed in combination with general mechanics theory,and the law of this failure process was derived.The corresponding mechanical model was then established.The model was used to analyze the impact failure process of the locking mechanism of a rocket projectile.FE simulation and the established equivalent experiment were combined to verify the law of the impact failure process of the locking mechanism in a real environment.Taken together,the simulation and experimental results agreed with the theoretical analyses.The results showed that the proposed model and method can be applied to theoretical and experimental studies on the impact failure of the locking mechanism and provide a basic method for assessing impact failure performance.
作者
赵鑫
李军
申向军
ZHAO Xin;LI Jun;SHEN Xiangjun(School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China;The Fifth Research Institute of Jinxi Group Technology Center,Taiyuan 030000,China)
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
北大核心
2018年第9期1568-1573,共6页
Journal of Harbin Engineering University
关键词
火箭炮
闭锁机构
撞击失效
力学模型
落锤
等效实验
数值分析
性能评估
rocket gun
locking mechanism
impact failure
mechanical model
drop hammer
equivalent experiment
numerical analysis
performance evaluation
