反后坐装置布局对炮口振动的影响研究  

Research on Influence of Recoil Mechanism Structure on Muzzle Disturbance

作　　者：萧辉[1] 杨国来[1] 葛建立[1] 于情波 

机构地区：[1]南京理工大学机械工程学院,南京290014

出　　处：《弹道学报》2016年第2期53-56,86,共5页Journal of Ballistics

基　　金：国家自然科学基金项目(11172139);国家重大科学仪器设备开发专项(2013YQ47076508);中央高校基本科研业务费专项资金(No.30915118825)

摘　　要：炮口振动是影响火炮射击精度的关键因素之一,它与反后坐装置布局及载荷传递密切相关。利用Flex-Flex接触碰撞模型模拟前后衬瓦与身管的相互作用,通过含微小间隙的改进接触算法和计及运动间隙的修正的Coulomb摩擦力方程表征揺架衬瓦和身管的接触碰撞关系,建立了全炮刚柔耦合发射动力学模型,在验证模型的基础上对提出的反后坐装置布局方案进行数值仿真和评估分析。研究结果表明,反后坐装置对称布局方案可有效降低炮口振动和衬瓦接触力,有利于提高射击精度和衬瓦磨损寿命,对该类火炮总体设计具有重要意义。Muzzle disturbance is one of key factors influencing the firing accuracy ,and it is closely related to arrangements of recoil mechanism and load transfer .The relationships of front and back bushings and barrel were simulated by Flex-Flex contact model .A modified Hertz contact model and a Coulomb friction equation with clearance joints were introduced to simulate the contact relationships of barrel-cradle bushing .The rigid-flexible coupling dynamic model of artillery was established .Numerical simulations and evaluation analysis of these schemes of recoil mechanism were carried out based on the proved model . Research shows that the muzzle disturbance and contact force can be reduced effectively by symmetrically setting recoil mechanism .The proposed recoil-mechanism can improve the firing accuracy and extend the performance life of cradle bushings ,and it has great significance for artillery systematic design .

关 键 词：火炮 后坐装置 炮口振动 揺架衬瓦 接触碰撞 

分 类 号：TJ303.4[兵器科学与技术—火炮、自动武器与弹药工程]