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本文在实验的基础上,应用应力波理论对某岸炮半穿甲弹引信的瞎火原因以及某地一空导弹机电引信冲击闭合器的作用机理进行了初步的探讨。根据对简化模型的理论分析、计算和试验,我们认为弹丸在冲击载荷的作用下,引信中具有自由界面的零件,由于应力波在其自由界面上反射,使引信零件将沿着冲击载荷作用的方向运动。这就是某岸炮半穿甲弹引信瞎火的原因,也是某机电引信冲击闭合器的作用机理之所在。用应力波理论研究高强度冲击载荷的作用较为普遍,如碎甲机理等。试验表明,应力波理论也可用来研究低强度冲击载荷作用下的零件的运动问题。
Based on the experiment, this paper makes a tentative discussion on the blind fire reason of the semi-armor-piercing ammunition fuze of a shore gun and the action mechanism of an electro-mechanical fuse of an airship missile on the basis of stress wave theory. According to the simplified model of the theoretical analysis, calculation and test, we believe that the impact of the projectile in the fuselage, fuze with a free interface components, as the stress wave in its free interface reflection, the fuze parts will be along the impact load Direction of movement. This is the reason why a shore cannon armored armor-piercing fuze blind fire, but also the mechanism of an electromechanical fuze impact closure. Using stress wave theory to study the effect of high strength impact load is more common, such as broken mechanism. Experiments show that the stress wave theory can also be used to study the motion of parts under low impact load.