引信惯性部件坠落动力学试验分析及数值仿真

Test Analysis and Numerical Simulation of Fuse Inertia Components Falling Dynamics

惯性触发机械引信的惯性部件在坠落过程中的位移是引信安全性能的重要指标。通过研究并设计了引信坠落试验方法,借助测试曲线,运用动力学方法对弹丸坠落时的引信惯性部件运动规律进行分析和仿真。建立了引信惯性部件的动力学模型,分析了引信惯性部件的运动规律。设计了引信测试平台,建立了基于Labview平台的引信动态采集系统,进行了大量的坠落碰撞试验,得到了在不同的坠落高度条件下,弹丸对水泥地面、钢板等不同介质的冲击加速度,根据动力学模型对惯性体的行程进行仿真。试验结果表明该方法对引信的设计和验收提供有效的手段。

The displacement of the inertia components of the inertia triggering mechanical fuze in the process of falling is one of security performance norms. The fuze falling test method was designed, in virtue of test curve, with the dynamical method, the analysis and simulation of the movement law of the fuze inertia components were developed at the pill falling time. The dynamical model of the fuze inertia components was found, and the movement law of the fuze inertia components was analyzed. The fuze test ground was designed, and the fuze dynamic gather system based on Labview was designed, through lots of falling impact test, with the different falling height, the impact acceleration of pill for different ground of concrete and armor plate was measured, and the displacement of inertia components based on dynamical model was simulated. The result of simulation indicates the method can provide the valid means for the design and acceptance tests of fuze.