摘要
针对膨胀波新发射机理下发射身管在各种载荷作用下的身管振动响应进行研究分析。根据膨胀波新发射机理发射过程中身管的实际受载情况,联立内弹道方程组,建立了计及身管柔性效应的振动响应方程。采用Rayleigh-Ritz模态法对振动方程解耦离散,得到便于数值求解的二阶时变方程组。通过数值求解给出了膨胀波新发射机理发射过程中的振动响应规律及不同参数条件下内弹道性能与身管振动响应间的关系,为弹丸的射击精度优化及内弹道参量合理选取提供了理论参考。
During the launch process, by use of the new launch mechanism of rarefaction wave, the elastic vibation of gun caused by various loads will alter the kinematic parameters of the muzzle, and then affect the running track of the projectile and the firing precision. Based on the actual loads acting on the barrel during the launch process and combining with the interior ballistic equations, the vibration response equation of the barrel was established. Taking advantage of the Rayleigh-Ritz modal method, the vibration equation was dispersed to the second-order time-variant equations. After numerical calculation the vibration response was obtained and the relations between vibration response and interior ballistic property under different parameters were achieved. The theoretical references about the optimization of firing precision and the reasonable choice of interior ballistic parameters were presented.
出处
《振动与冲击》
EI
CSCD
北大核心
2009年第8期144-147,共4页
Journal of Vibration and Shock
基金
教育部优秀人才支持计划资助(NCET040509)
高校博士学科点基金(20060288019)
江苏省自然科学基金(BK2007531)
