多干扰源下热连轧机主传动系统扭振问题研究 |
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引用本文:张义方,姚莉,崔立,何成,胡梦鑫,李聪,朱小龙.多干扰源下热连轧机主传动系统扭振问题研究[J].上海第二工业大学(中文版),2021,(2):138-146 |
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基金项目:国家自然科学基金项目 (51675323), 上海市自然科学基金项目 (20ZR1421000), 上海第二工业大学校基金项目资助 |
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中文摘要:针对热连轧机主传动系统扭转振动问题, 考虑非线性刚度及阻尼项, 建立连轧机在电机谐波干扰及负载谐
波干扰下的主传动系统扭转动力学模型。采用多尺度法求解非线性动力学系统的 1/2 倍亚谐、2 倍超谐及组合共振
幅频响应方程。以某钢企中 1 580 mm 热连轧机 F2 主传动系统为例, 分析实际参数下不同非线性刚度、非线性阻
尼、电机扰动及线性阻尼对主传动系统亚谐、超谐及组合共振的幅频响应的影响。研究结果为揭示热连轧机主传动
系统非线性动力学特性问题机理提供实用参考。 |
中文关键词:热连轧机 扭振 多干扰源 共振 幅频响应 |
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Research on Torsional Vibration of Main Drive System of Hot Strip Mill under Multi Disturbance Sources |
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Abstract:For the torsional vibration issue in the hot strip mill, the torsional vibration dynamic model of the main drive system is
established under the harmonic disturbance of motor and load when the nonlinear stiffness and damping are considered. The multiscale method is used to solve the 1/2 subharmonic, 2-fold superharmonic and combined response equations for the nonlinear dynamic
system. The F2 main drive system of a 1580 mm hot strip mill is analyzed, the amplitude-frequency response including subharmonic,
superharmonic and combined resonance is obtained under the effect of actual parameters such as nonlinear stiffness, nonlinear damping,
motor disturbance and linear damping. The results of the research provide a practical reference for revealing the mechanism of nonlinear
dynamic characteristics of the main drive system for the hot strip mill. |
keywords:hot strip mill torsional vibration multi disturbance sources resonance amplitude-frequency response |
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