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Experimental and Numerical Investigation of the Vibration Characteristics in a Cold Rolling Mill Using Multibody Dynamics

机译：多体动力学的冷轧机振动特性的实验和数值研究

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摘要

Chatter vibration is detrimental to the quality of the metal strip in the rolling process. A numerical model was proposed to investigate the vibration characteristics. A rolling mill that includes the driving system was modeled by multibody dynamics to investigate the cause and characteristics of the chatter vibration. The proposed numerical model was validated by theoretical analysis and an experiment that was carried out during manufacturing. The frequency of chatter with high amplitude was in the range computed theoretically by the equation for chatter frequency. The range of chatter frequency was very similar to that predicted by the multibody dynamic analysis, if the speed range of the work roll was in steady state. Because the derivative of the chatter frequency was different from that of the gear mesh frequency (GMF), it could be claimed that the frequencies of the chatter and the gear mesh were not related. It was observed in the analysis that the GMF generated by the helical gear was transmitted to the work roll. The amplitudes of the gear mesh and chatter frequencies became high when the rolling force was high, but the chatter frequency did not occur when there was no rolling force. The effects of the speed of the work roll and the ratio between the dynamic and static components of the rolling force to the chatter vibration were also investigated. We found the chatter frequency that affects vibration of the rolling mill strongly, and analyzed the effect of the rolling parameters on chatter frequency.
机译：颤振对轧制过程中的金属带材质量有害。提出了一个数值模型来研究振动特性。通过多体动力学对包括驱动系统的轧机进行建模，以研究颤振的原因和特征。通过理论分析和制造过程中进行的实验验证了所提出的数值模型。高振幅的颤动频率在理论上由颤动频率方程式计算的范围内。如果工作辊的速度范围处于稳定状态，则颤振频率的范围与多体动力学分析所预测的范围非常相似。由于颤振频率的导数与齿轮啮合频率（GMF）的导数不同，因此可以断定颤振的频率与齿轮啮合的频率无关。在分析中观察到，由斜齿轮产生的GMF被传递到工作辊。轧制力大时，齿轮啮合的振幅和颤振频率变高，但没有轧制力时，不发生颤振频率。还研究了工作辊的速度以及轧制力的动态和静态分量之比对颤动振动的影响。我们发现颤振频率强烈影响轧机的振动，并分析了轧制参数对颤振频率的影响。

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  • 来源
    《ISIJ international》 |2012年第11期|p.2042-2047|共6页
  • 作者

    Youngdeuk KIM; Chang-Wan KIM; Sung-Jin LEE; Hyunchul PARK;

  • 作者单位

    Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), San31, Hyoja-dong, Nam-gu, Pohang, Kyungbuk, 790-784 Republic of Korea;

    School of Mechanical Engineering, Konkuk University, 1 Hwayang-dong, Gwangjin-gu, Seoul, 143-701 Republic of Korea;

    Technical Research Laboratories, POSCO, 1, Goedong-dong, Nam-gu, Pohang, Kyungbuk, 790-300 Republic of Korea;

    Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), San31, Hyoja-dong, Nam-gu, Pohang, Kyungbuk, 790-784 Republic of Korea;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    cold rolling mill; vibration characteristics; multibody dynamics; rolling force;

    机译：冷轧机振动特性多体动力学滚动力;

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