引信经典后坐保险机构对过载时间的响应特性

为了优化设计引信后坐保险机构的保险和解除保险性能,应用刚体动力学理论和仿真软件ADAMS、LS-DYNA分析了引信经典弹性后坐保险机构和刚性后坐保险机构对不同后坐过载作用时间的响应特性,得到了不同后坐过载时间下两类后坐保险机构解除保险时间响应;两类后坐保险机构不同的解除保险时间表明两类保险机构对相同后坐环境响应特性不同;过载作用时间影响保险机构解除保险正确性;在后坐过载系数较大时,弹性保险机构和刚性保险机构均可能解除保险;在后坐过载系数较小时,无论过载作用时间如何变化,刚性保险机构均不能解除保险,而在过载作用时间较长时弹性保险机构会出现解除保险情况;因此,针对不同后坐过载作用时间应注意正确选择引信保险机构的类型。

Response of Classic Setback Arming Devices to Setback Environment

For optimizing the performance of fuze setback device,rigid body dynamics theory was used to analyze the responses of fuze single freedom elastic setback arming device to different setback overloads, ADMAS and LS-DYNA were used to simulate the responses of fuze elastic setback arming device and rigid setback arming device to different setback overloads.The simulation results of arming time demonstrate that the two types of devices have different responses to same setback environment,and overload time affects the correctness of device arming.The two types of arming device can arm possibly when the setback overload factor is big relatively.The rigid arming device can not arm possibly when the setback overload factor is small relatively no matter how the setback overload action time changing,while the elastic setback arming device can arm with long setback overload action time.Therefore the species of fuze setback arming device should be correctly selected specially.