[1]李春波,余春晖,柴金龙,等.超高速摄影仪转镜模态数值仿真分析[J].深圳大学学报理工版,2011,28(No.6(471-564)):513-517.
 LI Chun-bo,YU Chun-hui,CHAI Jin-long,et al.Modal analysis through numerical and experimental methods for rotating mirror of ultra-high speed camera[J].Journal of Shenzhen University Science and Engineering,2011,28(No.6(471-564)):513-517.
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超高速摄影仪转镜模态数值仿真分析()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第28卷
期数:
2011年No.6(471-564)
页码:
513-517
栏目:
光电工程
出版日期:
2011-11-20

文章信息/Info

Title:
Modal analysis through numerical and experimental methods for rotating mirror of ultra-high speed camera
文章编号:
1000-2618(2011)06-0513-05
作者:
李春波1余春晖2柴金龙1王红志1李景镇3黄虹宾13
1)深圳大学机电与控制工程学院,深圳 518060
2)深圳职业技术学院汽车与管理学院,深圳 518055
3)深圳市微纳光子信息技术重点实验室,深圳 518060
Author(s):
LI Chun-bo1YU Chun-hui2CHAI Jin-long1WANG Hong-zhi1LI Jing-zhen3and HUANG Hong-bin13
1)College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen 518060, P.R.China 
2)Automotive and Transportation Engineering, Shenzhen Polytechnic, Shenzhen 518055, P.R.China 
3)Shenzhen Key Laboratory of Micro-nano Photonic Information Technology, Shenzhen 518060, P.R.China
关键词:
光学工程超高速摄影仪转镜模态分析瞬态成像高速摄影
Keywords:
optical engineeringultra-high speed cameramodal analysis for rotating mirrornumerical analysistransient imagehigh speed photography
分类号:
TB 872;TB 853.1
文献标志码:
A
摘要:
采用有限元法对超高速摄影仪转镜系统进行数值仿真与模态测试,验证转镜模态数值分析方法的精度.利用数值分析法,提取转镜的前3阶模态,研究其对应振型与模态应力,发现其共振点主要集中在304.37 Hz、354.15 Hz和345.17 Hz处, 且1阶弯曲模态应力远大于1阶扭转应力,轴肩位置是应力集中区.通过实验在线测得转镜在加速过程中的幅频响应曲线,发现转镜在固有3个频率点处振幅出现急剧变化,且在355 Hz处的振幅远大于其在297 Hz处的振幅.结果表明,1阶弯曲是转镜出现破坏的主要形式,轴的损伤是转镜出现疲劳破坏的主要原因.数值解和实验结果吻合较好,说明对转镜采用数值分析法提取其模态可获得较高精度.
Abstract:
The research objective of this paper was to verify the accuracy of numerical approach for the ultra-high speed camera rotating mirror system by numerical simulation and modal test. Numerical analysis was done to obtain the first three modal and study their corresponding vibrations and modal stress. It is found that the main resonance points are concentracted in the 304.37 Hz, 354.12 Hz and 354.17 Hz, the first-order bending stress is far greater than the first-order torsion stress and the shaft shoulder is the region of stress concentration. Afterwards, the modal test was done to obtain the amplitude-frequency response during the accelerating process of the rotating mirrors. From the amplitude-frequency curves, it can be seen that the amplitudes of rotating mirror differ greatly at those natural frequencies and the peak amplitude at 355 Hz is much larger than that at 297 Hz. It is shown that the fist-order bending is the main damage form,and the shaft damage is the main cause of the fatigue failure of the rotating mirror. The results from the numerical and experimental analysis are consistent,so the numerical analysis for extracting the modal of the rotating mirror is reliable and highly accurate.

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备注/Memo

备注/Memo:
收稿日期:2010-08-02;修回日期:2011-08-11
基金项目:国家自然科学基金资助项目(60978039)
作者简介:李春波(1983-),男(汉族),湖南省新宁县人,深圳大学硕士研究生.E-mail:chunbolee@126.com
通讯作者:黄虹宾(1964-),男(汉族),深圳大学教授、博士.E-mail:huanghb@szu.edu.cn
更新日期/Last Update: 2011-11-22