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本文在试验的基础上应用应力波理论对引言信冲击闭合器的作用机理,进行了理论分析和实验研究. 根据实验和理论分析,定性的说明:弹丸在冲击载荷作用下,引信中具有自由界面的零件,由于应力波在自由界面上的反射,引信零件将沿着载荷作用方向运动.这就是冲击闭合器的作用机理. 另外,零件的运动发生在应力波到达之后,应力波到达之前,零件不受力的作用.这一点对于要求瞬发度较高的弹底引信十分重要. 因此,弹丸在瞬时冲击载荷作用下,对于某些引信结构,仅用刚体力学理论分析引信零件的运动就受到了限制,而应用应力波则可以描述零件运动的某些现象和规律.
In this paper, based on the experiment, the stress wave theory is applied to the theoretical analysis and experimental research of the mechanism of the impact-closure device of the preamble.According to the experimental and theoretical analysis, the qualitative description is that the projectile has a free interface Of the parts, due to the reflection of the stress wave in the free interface, the fuze components will move along the direction of the load action.This is the action mechanism of the impactor.In addition, the movement of the components occurs after the stress wave arrives and before the stress wave arrives, Which is very important for the bottoming fuze which requires a higher instantaneous degree.Therefore, the projectile under some instantaneous impact load, for some fuze structure, only the rigid body mechanics theory analysis of the fuze part of the movement is affected The limitations, and the application of stress wave can describe some of the phenomenon of movement and laws.