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理论参考。
The vibration response about the rarefaction wave gun in the action of various loading is researched. Based on the actual loads act on the barrel in the launch process, the vibration response equation which considering the elastic effect of the barrel is established with the interior ballistic equations. By Rayleigh-Ritz modal method the vibration equation is dispersed to the second-order time-variant equations. After numerical calculation the vibration response and relation between vibration response and interior ballistic property in the different parameters are attained, and then the theoretical references about the optimization of firing precision and the reasonable choice of interior ballistic parameters are also attained.