基于虚拟样机技术的摆盘发动机仿真

Simulation of Swashplate Engine Based on Virtual Prototyping Technology

斜盘发动机作为水下航行器使用的一种特种发动机,理论分析存在很大的局限性,而虚拟样机技术有着多方面的优势。为了对发动机减振降噪,也必须进行多体动力学仿真分析。以某现役水下航行器使用的摆盘发动机系统模型为对象,建立虚拟样机模型。应用多体动力学分析方法,在UG和ADAMS软件平台上,获得了某工况下发动机主要部件的运动规律曲线,以及关键部件之间的作用力、力矩曲线。经过分析认为连杆与活塞及斜盘的冲击、滚轮与摆盘箱之间的作用力、摆盘与斜轴之间的轴承承受的负荷,是引起发动机振动噪音的主要原因。以上仿真结果将为摆盘机的振动噪声分析、有限元分析提供重要的依据。

Swashplate engine is the special engine used in the underwater vehicles.Theoretical analysis of the engine has much limitations,whereas virtual prototyping of engine has extensive advantages.In addition,it is necessary to do multi-body dynamics simulation analysis of engine for the sake of vibration damping and noise reduction.Based on the UG and ADAMS software platform,the virtual prototyping models were built.By the simulation analysis,the motion curves of the main components and the forces and torque curves among the main components were acquire.It was concluded that the impacts of piston to rod and piston to swashplate,the forces between rollers and the swashplate box,and the loads of the bearings between the swashplate and the clino-axis,are the main sources of the vibration and noises.These simulation results provide an important basis for the vibration analysis,noise analysis,and finite element analysis of the swashplate engine.