轧机整体耦合建模问题研究

发布时间：2018-04-25 19:48

本文选题：整体建模 + 轧机　；参考：《机械工程学报》2015年14期

【摘要】：轧机振动一直是制约轧制发展的重要问题。建立有效的轧机系统动力学模型是研究轧机振动问题的基础,而已有的研究在轧机系统耦合建模方面仍存在着许多不足。通过分析轧机不同类型振动产生的机理及其相互关系,建立能够表征板带轧机垂直-水平-扭转以及轧件水平颤振的耦合振动结构模型;基于Bland-Ford-Hill轧制力模型,并进一步考虑振动状态下辊缝动态变化的影响,建立动态轧制过程模型;在此基础上,将动态轧制力及动态轧制力矩作为反馈激励源,作用于轧机振动结构模型,构建全新的动态轧制过程与轧机系统结构相耦合的轧机颤振整体耦合动力学模型。通过将所建模型的仿真结果与2030冷连轧机组振动测试数据的对比,验证此模型的正确性和有效性。结果表明,轧机颤振整体耦合动力学模型能够合理表征振动过程中轧机系统结构和轧制过程的耦合关系,为深入研究轧机综合振动特性提供理论基础。
[Abstract]:Rolling mill vibration has been an important problem restricting the development of rolling. To establish an effective dynamic model of rolling mill system is the basis of studying the vibration of rolling mill, but there are still many deficiencies in the research of coupling modeling of rolling mill system. By analyzing the mechanism of different types of vibration of rolling mill and their relationship, the coupled vibration structure model which can characterize vertical horizontal torsion and horizontal flutter of strip mill is established, based on Bland-Ford-Hill rolling force model, The dynamic rolling process model is established by considering the influence of the dynamic change of roll gap under the vibration state, and the dynamic rolling force and dynamic rolling moment are taken as the feedback excitation source to act on the vibration structure model of the rolling mill on the basis of the dynamic rolling force and the dynamic rolling moment. A new dynamic rolling process coupled with the rolling mill system structure is constructed. The validity and validity of the model are verified by comparing the simulation results with the vibration test data of 2030 cold tandem rolling mill. The results show that the overall flutter coupling dynamic model of rolling mill can reasonably represent the coupling relationship between rolling mill system structure and rolling process, which provides a theoretical basis for further research on the comprehensive vibration characteristics of rolling mill.
【作者单位】：北京科技大学机械工程学院;
【基金】：国家自然科学基金(51175035) 教育部博士点基金(20100006110024) 北京高校青年英才计划(YETP0367)资助项目
【分类号】：TG333

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