虚拟体在弹炮耦合系统动力学模型中的应用  

Application of virtual objects in dynamic model of a projectile-barrel coupled system

作　　者：陈世业[1] 王良明[1] 史伟 

机构地区：[1]南京理工大学能源与动力工程学院,南京210094 [2]中国兵器工业基团051基地,华阴714200

出　　处：《振动与冲击》2013年第24期33-37,共5页Journal of Vibration and Shock

摘　　要：为了更好地研究火炮发射过程中柔性身管和弹丸间的耦合作用,通过引入虚拟体,提出一种经由虚拟体组成的模拟身管来间接传递弹炮间力元的方法,推导了含虚拟体项的弹炮刚柔耦合动力学方程。以某型火炮为例,引入弹炮系统模型,获得了在相同射击条件下试验测试数据和仿真计算结果的对比曲线,分析表明采用该方法建立的模型实现了弹炮间相互作用力的传递,并且能较真实反映弹丸在膛内的运动规律,为火炮发射动力学研究提供一定的参考。To investigate better the coupling between a flexible barrel and a bullet during an artillery firing process, a method was presented by introducing virtual objects and transferring forces indirectly through an analog barrel composed of virtual objects. The rigid-flexible coupled dynamic equation of the projectile-barrel system containing virtual objects was derived. Taking a certain type of artillery for an example, the proposed system model was introduced, then tl^e comparative curves for both the test data and the simulation results under the same firing condition were obtained. The comparison showed that the proposed model can transfer the projectile-barrel collision force and reflect truly the law of projectile motion in the barrel. The results provided a reference for study on artillery launch dynamics.

关 键 词：虚拟体 模拟身管 刚柔耦合 接触碰撞 

分 类 号：TJ301[兵器科学与技术—火炮、自动武器与弹药工程]