连铸结晶器非正弦振动装置建模与固有特性分析  

Modeling and Natural Characteristic of Non-sinusoidal Oscillator of Continuous Casting Molds

作　　者：周超 张兴中[1] 刘平飞 关杰 ZHOU Chao;ZHANG Xingzhong;LIU Pingfei;GUAN Jie(National Engineering Research Center for Equipment and Technology of Cold Strip Rolling,Yanshan University,Qinhuangdao,Hebei,066004;Ocean College,Hebei Agricultural University,Qinhuangdao,Hebei,066003;China National Heavy Machinery Research Institute Co.,Ltd.,Xi’an,710032)

机构地区：[1]燕山大学国家冷轧板带装备及工艺工程技术研究中心,秦皇岛066004 [2]河北农业大学海洋学院,秦皇岛066003 [3]中国重型机械研究院有限公司,西安710032

出　　处：《中国机械工程》2018年第16期1921-1926,共6页China Mechanical Engineering

基　　金：河北省自然科学基金-钢铁联合基金资助项目(E2016203492);国家自然科学基金资助项目(51275446);河北省留学人员科技活动项目(C2013005012)

摘　　要：为实现机械系统驱动的结晶器非正弦振动波形偏斜率的在线调节,设计出一种双伺服电机驱动的结晶器非正弦振动装置。阐述其工作原理,建立三维模型并进行运动学仿真;建立扭转—平移耦合动力学模型,推导其动力学方程。研究表明,非正弦振动系统的质量矩阵是常量,刚度矩阵、阻尼矩阵随时间周期性变化。最后,基于瞬时机构凝固法,分析了系统偏心轴的转角、振幅、构件惯性参数及刚度对其固有频率的影响。To realize modification ratio of non-sinusoidal oscillation adjusted on line for mold driven by mechanisms,a non-sinusoidal oscillator driven by double servomotors was proposed.Firstly,working principles of the oscillator were described.3D model of the system was established,which was analyzed by simulation software.Secondly,the torsional-translational coupling dynamics model was created,and the dynamics equations of which were deduced.The results show that mass matrix of non-sinusoidal oscillation is constant,stiffness matrix and damping matrix change with time.At last,based on instantaneous mechanism-solidified method,natural frequency of the system was analyzed,which was influenced by rotational angles of eccentric shaft,amplitudes,inertia parameters and stiffness.

关 键 词：连铸结晶器 非正弦振动 振动装置 固有频率 

分 类 号：TF777.1[冶金工程—钢铁冶金]