摘要
根据4200轧机的实际参数,建立了轧机的两自由度非线性振动模型。采用Matlab软件编程求出了振动方程的数值解,并用分岔图和庞加莱映射的方法分析了振动系统随参激角频率变化的拟周期运动和混沌运动现象,以及轧件的刚度变化幅值对轧机振动状态的影响。结果表明,参激频率靠近固有频率附近,轧件的刚度较大时,轧机系统的非线性特征越显著,越容易失稳。
A 2 DoF non-linear vertical vibration model was built according to the real parameters of the 4200 model rolling mill.The numeric solutions of the vibration equations were obtained by a program compiled by means of the Matlab software.The phenomena of the quasi-periodic vibrations and the chaotic movements of the vibration system versus the exciting frequency and the effects of the stiffness variation amplitude of rolled plate on the vibration state of the mill were analyzed by the methods of bifurcation di...
出处
《吉林大学学报（工学版）》
EI
CAS
CSCD
北大核心
2009年第3期712-715,共4页
Journal of Jilin University:Engineering and Technology Edition
基金
国家自然科学基金项目(10176010)
关键词
机械制造与自动化
中厚板轧机
非线性
数值仿真
振动
mechanical manufacture and automation
medium plate mill
non-linearity
numeric simulation
vibration
