摘要
基于刚柔耦合多体动力学理论,在UG三维软件中建立分度机构实体模型,导入RecurDyn多体动力学软件中,采用有限元柔性体技术建立分度机构输出轴柔性体模型,并通过施加边界约束和接触,建立了某链式自动炮分度机构的刚柔耦合动力学模型。采用控制变量法对刚柔耦合动力学模型进行仿真分析,研究粘性阻尼系数、分度轮输入转速、啮合间隙三因素对分度机构传动过程中碰撞力的影响规律。结果表明:在粘性阻尼系数0~200 N·S/mm、啮合间隙0~0.4 mm、分度轮输入转速200 r/min时,碰撞力最大值相对较小。该结果对链式自动炮分度机构的设计与优化提供依据。
The 3D model of indexing mechanism was built in virtual prototyping software UG,and was imported into multi-body dynamics software Recurdyn.The flexible body of output shaft assembly used finite element flexible body technology was built in the software Recurdyn.Rigid-flexible coupled dynamics model of indexing mechanism based on the theory of rigid-flexible coupled multi-body dynamics was built through setting the corresponding constraints and contacts.The different influence laws of different factors on collision force in transmission process of indexing mechanism,including viscous damping coefficient,input speed of indexing wheel,meshing clearance,were researched.When viscous damping coefficient is 0~200 N·S/mm,meshing clearance is 0~0.4 mm,and input speed of indexing wheel is 200 r/min,the maximum collision force is relatively lower.The results provide a basis for the design and optimization of parallel indexing mechanism.
作者
王凯
李勇
田楠
申亚琳
WANG Kai;LI Yong;TIAN Nan;SHEN Yalin(Northwest Institute of Mechanical&Electrical Engineering,Xianyang 712099,China)
出处
《兵器装备工程学报》
CAS
北大核心
2020年第3期76-80,96,共6页
Journal of Ordnance Equipment Engineering
基金
“十三五”兵器工业联合基金项目(6141B010239)。
关键词
刚柔耦合
链式自动炮
分度机构
动力学
碰撞力
rigid-flexible coupling
chain automatic gun
indexing mechanism
dynamics
collision force
