弹丸外弹道及引信活击体爬行力数值仿真

Numerical Simulation of Projectile Exterior Ballistic and Creep Force of Fuze Active Inertia Body

针对惯性触发引信设计过程中引信零件爬行力计算问题,分析了引信及弹丸在外弹道飞行时的受力情况,运用计算流体力学软件(FLUENT)对弹丸空气动力进行了仿真分析,得到了弹丸在外弹道飞行的阻力和翻转力矩。再由虚拟样机软件(ADAMS)对弹丸整个飞行过程进行模拟计算,得到弹丸在整个外弹道的稳定性情况、飞行轨迹和引信活击体受到的爬行力。所得结果和分析对弹丸外弹道分析及引信惯性触发机构的设计和研究具有一定参考意义。

Aiming at the problem of calculating the creep force of the fuze parts in the design process of the inertial trigger fuze, the force of the fuze and the projectile flyed in the exterior ballistic were analyzed. The aerodynamic force of the projectile was simulated and analyzed by using the computational fluid dynamics （FLUENT） software. The resistance and the overturning moment of the projectile in the exterior ballistic were obtained. And then by the virtual prototype software （ADAMS） to simulate the whole flight process, we got the stability of the projectile in the whole exterior ballistic, the trajectory of the flying and the creep force of the active inertia body. of fuze The results and analysis have a certain reference value for the design and research of the ballistic trajectory analysis and the inertial trigger mechanism of the projectile.