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| 新型结晶器非正弦振动系统弹性振动响应的研究 | |
| 引用本文： | 张立平,汪建晓,卢清华,李宪奎,李晓丹.新型结晶器非正弦振动系统弹性振动响应的研究[J].机械工程学报,2011,47(19). |
| 作者姓名： | 张立平 汪建晓 卢清华 李宪奎 李晓丹 |
| 作者单位： | 1. 佛山科学技术学院机械与电气工程学院 佛山528000 2. 燕山大学机械工程学院 秦皇岛066004 3. 秦皇岛职业技术学院 秦皇岛066004 |
| 摘 要： | 针对开发的逆平行四连杆驱动的串接式全板簧结晶器非正弦振动系统,利用集中参数法建立该系统扭振与线振相耦合的动力学模型,并推导其运动微分方程。采用谐波平衡法求出系统的弹性振动响应,时域分析结果表明,在某些工作频率下结晶器运动规律产生畸变,系统发生剧烈弹性振动。频域方面,由FFT分析得出系统发生共振是结晶器运动规律产生畸变的原因,其本质是弹性振动响应的频谱中谐波明显增多,谐波幅值大幅增加。在此基础上分析系统各类激励对弹性振动的影响,结果表明,具有多频性的内激励是系统共振的决定因素,决定了共振的频率,而外激励只影响共振峰值的大小。这些结论为该振动系统的进一步应用及结晶器非正弦振动系统的平稳性研究提供了理论依据。 |
| 关 键 词： | 连铸 结晶器 非正弦 动力学分析 频域响应 |
Research on the Elastic Vibration Response of New Non-sinusoidal Oscillation System for the Mold |
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| ZHANG Liping,WANG Jianxiao,LU Qinghua,LI Xiankui,LI Xiaodan.Research on the Elastic Vibration Response of New Non-sinusoidal Oscillation System for the Mold[J].Chinese Journal of Mechanical Engineering,2011,47(19). | |
| Authors: | ZHANG Liping WANG Jianxiao LU Qinghua LI Xiankui LI Xiaodan |
| Affiliation: | ZHANG Liping1 WANG Jianxiao1 LU Qinghua1 LI Xiankui2 LI Xiaodan3(1.School of Mechatronics Engineering,Foshan University,Foshan 528000,2.College of Mechanical Engineering,Yanshan University,Qinhuangdao 066004,3.Qinhuangdao Institute of Technology,Qinhuangdao 066004) |
| Abstract: | A new type of non-sinusoidal oscillation system for the mold made up of anti-parallel equal-crank four-bar linkage and the cascaded whole-leaf spring oscillation mechanism.Elastic dynamic model coupled by torsional and linear vibration is set up with lumped parameter method and equations of motion is also built.Elastic vibration response is solved in time domain,which shows motion law of mold becomes distortion in some working frequency.In frequency domain,it is given that resonance is the cause of distorti... |
| Keywords: | Continuous casting Mold Non-sinusoidal oscillation Dynamics Frequency response |
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