微引信保险机构设计与仿真

Design and Simulation of Micro-fuze Safety Mechanism

为了适应小口径弹药对引信微型化的要求,提出了一种新型的微引信保险机构.该机构具有发射保险和限位保险双重保险功能,发射保险利用弹丸发射时高过载引起的变形位移实现解脱,限位保险利用微结构侧壁间的微摩擦控制安全解除保险的时间.对微引信保险机构进行了有限元分析,得到了满足高过载条件的尺寸参数,建立了保险机构的动力学方程,对发射时解脱双重保险的可靠性进行了仿真验证.结果表明,该机构对于实现小口径弹丸引信的安全性和可靠性是可行的.

In order to realize the miniaturization of fuse safety mechanism, a novel MEMS safety mechanism is proposed, which has double insurance functions launch insurance and position stop insurance. Launch insurance mechanism is released by deforming displacement movement produced by High-G, and position stop insurance controls the time-delay release by micro-friction. In order to reach the high-G resistance, finite element analysis is carried out to optimize the size of fuse safety mechanism. The dynamic equations of fuse safety mechanism are established. Simulations show that the double insurance mechanism can work with reliability and safety.