摘要
针对火炮射击时身管振动动力学和减小炮口振动的问题,建立了综合考虑弹炮刚柔耦合和摇架约束的身管振动动力学模型,以和射击精度相关的炮口振动横向线速度、横向线加速度和角位移、角速度表征炮口振动,在ADAMS中对身管振动动力学模型的四个参量进行了数值仿真求解,并考虑通过改变模型中摇架前后衬套距离来减小炮口振动。仿真结果表明,摇架约束的模型能够反应火炮射击时的身管实际振动规律,为减小炮口振动设计提供的依据。
In order to study the affect of Projectile-barrel Contact/Impact on the muzzle vibration, establish a three-dimensional solid rifled barrel model, generate a modal neutral file with flexible body information of rifled bar-rel, create and solve a numerical simulation model of rigid-flexible coupling based on Projectile-barrel Contact/Im-pact in the software ADAMS, then find a method to improve the speed of solution, change the distance of front and rear bushing and solve the model, and put forward a method to reduce muzzle vibration. The simulation results reflect the feature of muzzle vibration, the change of the distance of the front and bear bushing has a few influences on the muzzle vibration. Simulation results show that the Projectile-barrel Contact/Impact has a few influences on the verti-cal velocity, displacement of muzzle vibration and horizontal velocity, and displacement of muzzle vibration.
出处
《计算机仿真》
CSCD
北大核心
2012年第9期14-16,27,共4页
Computer Simulation
关键词
振动
动力学
刚柔耦合
数值仿真
Contact/impact
Dynamic
Rigid flexible coupling
Numerical simulation
