引信机构旋转偏心的蒙特卡罗模拟

Simulation for Spin Eccentricity of Device in Fuze with Monte Carlo Method

旋转偏心是旋转弹引信机构工作特性分析与计算的重要参数。为了得出引信机构旋转偏心的具体数值,以某引信球转子机构为例,对其旋转偏心所涉及的方向随机的矢量尺寸链进行了详细分析,应用蒙特卡罗法对旋转偏心进行了模拟计算,计算过程中涉及了作为组成环之一的采用相关原则标注的同轴度,并将模拟结果与极值法和概率统计法所得结果进行了对比分析。模拟结果表明:引信机构旋转偏心数值为近似于瑞利分布的偏态分布,最小值大于零,而其方向角为关于0°的对称分布,但并非均匀分布,也非正态分布。

The spin eccentricity is an important parameter in analyzing and calculating the working characteristic for the device in fuze of a spin projectile. In order to get the value of spin eccentricity of the device in fuze,taking a fuze ball rotor device as an example, the vector dimension chain with random direction, which including its spin eccentricity, is analysed in detail and its spin eccentricity is calculated with Monte Carlo simulating method. In the calculation the coaxiality marked with correlation principle and regarded as one of component links of the dimension chain is referred to. The simulation results is contrasted and analyzed with the result that was got from extremum method and probability statistics method. The simulation results from Monte Carlo simulating method show that the value of spin eccentricity for the device in fuze obeys skew distribution that approximates to Rayleigh distribution and its minimum value is larger than zero, its direction angle is symmetrical about zero degree. But it obeys neither uniform distribution nor normal distribution.