摘要
为解决椭圆齿轮驱动的连铸结晶器非正弦振动系统的低频共振问题,建立了该系统的动力学模型,推导出动力学方程。结果表明,时变参数决定共振频率,激振力幅值决定共振峰值,合理设计弹簧刚度、预压力,减小铸坯摩擦力可大大减小共振峰值,提高结晶器运行平稳性。
To solve the low-frequency resonance problem of a non-sinusoidal oscillation system driven by oval gears in continuous casting, the dynamic model of the oscillation system was built up. And the differential equations of motion were deduced. The result shows that the resonance frequencies are determined by the time-varying parameters, and the resonance peak values are controlled by the amplitudes of the exciting forces. The resonance peak values can be reduced and the running smoothness of the mold can be improved greatly by the stiffness and pre-pressure of the buffer spring that is designed properly, and by reducing the strand friction force.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2007年第15期1790-1794,共5页
China Mechanical Engineering
关键词
连铸
结晶器
椭圆齿轮
非正弦振动
低频共振
缓冲弹簧
continuous casting
mold
oval gear
non-sinusoidal oscillation
low-frequency resonance
buffer spring
