弹丸批质量水平的密集度检验方法

摘要

The test method of the intensity of projectiles in batches is an important measure of assessing the quality level of projectiles.In order to seek a new test method,the influences of the structural errors of projectiles on the aerodynamic parameters are analyzed using a fast simulation calculation method based on the technology,combing the computational fluid dynamics (CFD) software and the empirical formula for calculating the aerodynamic parameters of projectiles.The database of aerodynamic parameters of projectiles is established.A simulation software based on the six degree-of-freedom model and the Visual Basic is programmed and validated for calculating the intensity of projectiles in batches.The order of influences of the mass,diameter,mass eccentricity,dynamic unbalance,initial swing angle,initial swing angular velocity and muzzle velocity on the intensity is achieved by analyzing the correlation between random factor and intensity.The process and application of the test method are proposed.The research results show that the proposed test method is available for the assessment of the quality level of projectiles in batches.%弹丸批质量水平的密集度检验方法是考核弹丸批生产质量的重要手段.为了探索新型弹丸批质量水平的密集度检验方法,基于计算流体力学软件和经验公式的弹丸空气动力学参数快速仿真计算方法,分析弹丸的结构误差对气动参数的影响,建立了弹丸气动参数数据库.以Visual Basic为平台,建立了考虑质量偏心、动不平衡、射角、质量、弹道风等因素的弹丸数学模型,开发了火炮弹丸密集度仿真软件并进行验证.基于仿真软件,进行了随机因素与密集度的相关性分析,得到弹质量、弹径、质量偏心、动不平衡、初始摆动角、初始摆动角速度和初速对高低密集度和方位密集度影响程度的大小顺序,给出了弹丸批质量水平密集度检验方法的流程及应用.研究结果表明,该密集度检验方法在弹丸批质量水平的考核中是可行的.