基于刚度可变弹簧缓冲的某航炮后坐过程动力学建模及仿真  

Dynamic Modeling and Simulation of Aircraft Gun Recoil Process Based on Stiffness Variable Spring Buffer

作　　者：印圣 邱明[1] 宋杰[1] 司鹏 司尚宇 YIN Sheng;QIU Ming;SONG Jie;SI Peng;SI Shangyu(School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China)

机构地区：[1]南京理工大学机械工程学院,南京210094

出　　处：《兵器装备工程学报》2020年第6期7-11,41,共6页Journal of Ordnance Equipment Engineering

基　　金：国家自然科学基金项目(51376090,51676099);江苏省青年自然科学基金项目(BK20180473)。

摘　　要：提出了一种刚度可变并带有阻尼的新型弹簧双向缓冲装置并对航炮后坐系统过程进行了动力学建模和仿真。不考虑碰撞建立火炮、串联弹簧和阻尼所组成系统的非线性动力学模型,运用4阶Runge-Kutta数值算法得到了单弹簧、串联弹簧和结合阻尼的串联弹簧3种缓冲方式下后坐过程的数值解,并在ADAMS中进行了系统动力学仿真。分析了刚度可变弹簧缓冲装置中前置弹簧刚度、后置弹簧刚度、阻尼等对最大后坐力的影响规律。数值仿真结果验证了刚度可变弹簧缓冲方法对最大后坐力的减少机理。在缓冲位移、初始预压力相同的条件下,最大后坐力由9100 N降低为6534.24 N,刚度可变弹簧缓冲装置相比单刚度缓冲装置大大降低了最大后坐力和冲击,应用于某型航炮项目上,减后坐冲击效果很好。A new type of spring bidirectional buffer device with variable stiffness and damping was proposed,and the dynamic modeling and simulation of the recoil system of the cannon were carried out.Regardless of the collision,the nonlinear dynamic model of the system composed of artillery,series springs and damping was established.Using the 4th order Runge-Kutta numerical algorithm,the numerical values of the recoil process of the single spring,series spring and series spring combined with damping were obtained.It carried out system dynamics simulation in ADAMS.The influence of the front spring stiffness,rear spring stiffness and damping on the maximum recoil force in the variable stiffness spring buffer was analyzed.The numerical simulation results verify the mechanism of reducing the maximum recoil force by the variable stiffness spring buffer method.Under the conditions of the same buffer displacement and initial preload,the maximum recoil was reduced from 9100 N to 6534.24 N.Compared with the single-stiffness buffer device,the variable stiffness spring buffer device greatly reduced the maximum recoil force and impact.It is applied to a certain type of cannon project.The effect of recoil reduction is very good.

关 键 词：变刚度 弹簧缓冲器 阻尼 后坐力 航炮 

分 类 号：TJ30[兵器科学与技术—火炮、自动武器与弹药工程]