四辊轧机的六自由度垂直振动模型研究

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提出一种四辊轧机工作机座垂直振动的六自由度集中质量模型,利用MATLAB软件平台对机座垂直振动的固有频率进行了数值计算。现场振动测试结果表明,计算结果比较精确。所构建的轧机工作机座垂直振动模型可以用于进行动力学仿真分析和结构动力学修改,对于全面掌握和了解四辊轧机的振动特性、避免轧机产生垂直自激振动和提高轧机的生产效率及轧制产品质量都有重要的理论和实际意义。 A lumped mass model with 6 degrees of freedom for the vertical vibration of 4-high hot strip mill stand was proposed,and then its modal frequencies were calculated by MATLAB package.Field vibration testing results confirm that the numerical calculation is relatively accurate.This vertical vibration model can be used for dynamics simulation and structural dynamics modification,which provides important theoretical and practical significances for mastering and understanding the vibration characteristics of 4-high mill stand,avoiding vertical self-excited vibration,enhancing rolling efficiency and improving product quality.