基于ADAMS的微型摆式内燃机振动特性分析  

Analysis on vibration characteristics of micro free piston swing engine based on ADAMS

作　　者：任志勇[1] 周锋涛[1] 沈杰[1] 

机构地区：[1]煤炭科学研究总院太原研究院,太原030006

出　　处：《机械设计与制造》2011年第6期139-141,共3页Machinery Design & Manufacture

基　　金：国家科技支撑计划资助项目(2007BAB13B04)

摘　　要：振动对摆式内燃机正常工作具有较大的危害,在动力性分析软件ADAMS软件中建立微型摆式内燃机输入通道、激振器、输出通道和振动仿真模型,绘制中心摆和缸体水平和垂直方向的幅值和相位图,得出中心摆和缸体振动能量集中区域和振动波动较大区域。对频率响应的振动分析,量化地得到作用在中心摆上的振动加速度和振动加速度出现峰值的频率。为了避免产生共振,通过优化虚拟样机的有关参数,比如质心位置、弹簧的刚度和阻尼等,使外界激励力的频率避开系统的固有频率。Simulation model for input channel、vibration exciter、output channel and vibration of micro free swing piston engine is created.Then amplitude graph and phase diagram for center swing and cylinder body in horizontal and vertical direction are plotted to obtain coming energy concentration region and large vibration area of center swing and cylinder body.Through vibration analysis on the frequency response,quantitative vibration acceleration and frequency of peak acceleration acting on the center swing is obtained.In order to avoid resonance,by optimizing related parameters of the model,such as the centroidal position,the stiffness and the damping of valve spring,the frequency of external excitation force is safeguarded from natural frequency of system.

关 键 词：微型摆式内燃机 振动特性 ADAMS 

分 类 号：TH16[机械工程—机械制造及自动化]