为了研究章动力对引信惯性机构的影响,建立了弹丸对应不同初始扰动与有无偏心条件下的虚拟样机,并对其进行动力学仿真分析。得出了弹丸章动角的变换规律曲线与引信惯性机构位移曲线,由仿真结果可以得出:章动角受初始扰动与偏心双重影响,初始扰动越大章动角越大,弹丸偏心会使章动角变大且无法收敛,章动力与章动角成二次函数关系;章动角较大时会影响引信触发。得到的仿真数据和变化规律可以为引信抗章动能力的设计提供参考。

In order to study the influence of the nutation force on the fuze inertial mechanism, the virtual prototype of projectile corresponding to different initial disturbances and whether there was eccentricity has been established, and the dynamic simulation analysis of the projectile has carried out. The transformation curve of the projectile nutation angle and the displacement curve of the fuze inertial mechanism were obtained. The simulation results showed that the nutation angle was influenced by the initial disturbance and eccentricity, the larger the nutation angle was, the greater the initial disturbance, the eccentric angle of the projectile would make the nutation angle become larger and the nutation angle was unable to converge, the nutation force and the nutation angle was into a quadratic function. And the larger nutation angle would affect the fuze trigger. The simulation data and changing rules can provide a reference for the design of fuze anti nutation capability.