刀齿三星轮装载机构的谐响应分析

Harmonic Response Analyses on Three Knife-shape-tooth There Star-wheel Loading Mechanism

为探究刀齿三星轮装载机构的动力学性质,利用更新的拉格朗日法和ANSYS软件分别建立了刀齿三星轮装载机构的力学和实体模型,通过谐响应分析获得了不同激振频率下星轮的等效应力云图及位移响应曲线。模态分析表明,激振频率为2—2.6Hz时,刀齿三星轮装载机构不发生共振,转速在40—52r/min时星轮工作稳定。该研究结论为改进三星轮装载机构设计、完善其动力学性能提供了理论依据。

In order to research dynamic natures of a knife-shape-tooth three star-wheel loading mechanism, both mechanical model and solid model of the star-wheel loading mechanism are established by means of updated-Lagrange method and ANSYS software, and the equivalent stress cloud map and displacement respond curves of the star-wheel at different vibration frequencies are obtained through harmonic response analyses. Modal analysis shows that the star-wheel loading mechanism does not take pace resonance when the vibration frequency locates between 2Hz and 2.6Hz, and the star-wheel works stably when the rotation speed is from 40r/min to 52r/min. These study conclusions lay a theoretical foundation for improving the design of a knife-shape-tooth three star-wheel loading mechanism and perfecting its dynamic behavior.