Investigation for parametric vibration of rolling mill

来源期刊：中国有色金属学报(英文版)2002年第3期

论文作者：唐华平 丁睿 吴运新 钟掘

文章页码：485 - 488

Key words：rolling mill; parametric vibration; Floquet theory

Abstract: The vibration unsteady condition of rolling mill caused by flexural vibration of strip has been investigated. The parametric flexural vibration equation of rolled strip has been established. The parametric flexural vibration stability of rolled strip has been studied and the regions of stability and unstability have been determined based on Floquet theory and perturbation method. The flexural-vibration of strip is unstable when the frequency of variable tension is two times as the natural frequency of flexural-vibration strip. The characteristic of current in a temp driving motor's main loop has been studied and tested, it has been proved that there are 6 harmonic component and 12 harmonic component in main loop of driving motor electricity. The vertical vibration of working roller has been tested, the test result app roves that the running unsteady is caused by parametric vibration. It attaches importance to the parametric vibration of rolling mill.