| 热连轧机水平振动特性研究 |
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| 引用本文： | 范小彬,臧勇,王会刚. 热连轧机水平振动特性研究[J]. 钢铁, 2010, 45(9) |
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| 作者姓名： | 范小彬 臧勇 王会刚 |
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| 作者单位： | 河南理工大学机械与动力工程学院,河南,焦作,454000;北京科技大学机械工程学院,北京,100083;北京科技大学机械工程学院,北京,100083;唐山学院机电工程系,河北,唐山,063000 |
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| 基金项目： | 国家自然科学基金资助项目(50775010) |
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| 摘 要： | 为了研究轧机振动特性并找到振源,根据轧制界面非线性粘滑摩擦特性,建立了轧辊水平方向摩擦颤振模型、接轴不平衡力引起的工作辊水平方向跳振模型。模型仿真表明,当外扰力幅较小时系统呈现概周期运动,外扰力幅较大时系统呈混沌状态;当机座有间隙时轧辊水平振动波形有削顶现象,系统动力学变差;当采取消除间隙、消除接轴不平衡力措施后,系统的动力学性能得到改善。实测表明,当采取相应措施后振动强度减弱。
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| 关 键 词： | 轧机 颤振 碰撞 时频分析 |
Research on Hot Rolling Mill Horizontal Vibration |
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| FAN Xiao-bin,ZANG Yong,WANG Hui-gang. Research on Hot Rolling Mill Horizontal Vibration[J]. Iron & Steel, 2010, 45(9) |
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| Authors: | FAN Xiao-bin ZANG Yong WANG Hui-gang |
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| Affiliation: | FAN Xiao-bin1,2,ZANG Yong2,WANG Hui-gang3(1.School of Mechanical and Power Engineering,Henan Polytechnic University,Jiaozuo 454000,Henan,China,2.Mechanical Engineering Institute,University of Science and Technology Beijing,Beijing 100083,3.Department of Mechanical Engineering,Tangshan College,Tangshan 063000,Hebei,China) |
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| Abstract: | In order to study the vibration characteristics of rolling mill and find vibration source,the horizontal roller friction flutter model was established according to the nonlinear stick-slip friction characteristic of rolling interface.Then the work roll jump vibration model of horizontal direction was also established with unbalanced force caused by spindle.It shows that by numerical simulation,when external disturbance forces is small,the system is a periodic motion,external disturbance force is large,the s... |
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| Keywords: | rolling mill chatter collision time-frequency analysis |
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