[1]黄虹宾,柴金龙,李景镇,等.超高速摄影中铍转镜静力学与动力学性能分析[J].深圳大学学报理工版,2007,24(2):122-126.
 HUANG Hong-bin,CHAI Jin-long,LI Jing-zhen,et al.Mechanical analysis on beryllium rotating mirrorof ultra-high speed camera[J].Journal of Shenzhen University Science and Engineering,2007,24(2):122-126.
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超高速摄影中铍转镜静力学与动力学性能分析()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第24卷
期数:
2007年2期
页码:
122-126
栏目:
出版日期:
2007-04-30

文章信息/Info

Title:
Mechanical analysis on beryllium rotating mirrorof ultra-high speed camera
文章编号:
1000-2618(2007)02-0122-05
作者:
黄虹宾1柴金龙1李景镇2龚向东2孙凤山3何铁峰2
1)深圳大学机电与控制工程学院,深圳 518060;
2)深圳大学电子科学与技术学院,深圳 518060
3)中国科学院西安光学精密机械研究所,西安 710068
Author(s):
HUANG Hong-bin1 CHAI Jin-long1LI Jing-zhen2GONG Xiang-dong2SUN Feng-shan3and HE Tie-feng2
1)College of Mechatronics and Control Engineering,Shenzhen University,Shenzhen 518060,P.R.China
2)College of Electronics,Science and Technology,Shenzhen University,Shenzhen 518060,P.R.China
3)Xi’an Institute of Optics and Precision Mechanics,Academia Sinica,Xi’an 710068,P.R.China
关键词:
超高速摄影三面体铍转镜结构强度与镜面变形量振动模态分析有限元法
Keywords:
ultra-high speed camerarotating three-faced beryllium mirrorstructural strength and deformation magnitude of surface modal analysisfinite-element method
分类号:
TB 872
文献标志码:
A
摘要:
基于弹性力学空间问题基本方程、线性振动系统运动方程及有限元法,提出转镜力学特性的数值分析方法.运用该方法得出转镜镜面变形量、内部应力分布和振动模态参量的定量数值:在边缘线速度600 m/s下,三面体铍转镜的最大变形量为约0.334 6 μm;最大应力0.204 GPa,位于轴孔附近并与镜面距离最短处;两个在互相垂直平面内的一阶弯曲振动模态发生在3.4×105 r/min附近,一阶扭振点位于5.13×105 r/min附近,两个二阶弯曲振动点位于6.6×105 r/min附近.结果表明,如制造无缺陷,由体力产生的静载荷不足以破坏镜体,对转镜产生较大破坏作用的是共振导致的疲劳破坏.
Abstract:
The methods of numerical analysis for the strength and modal of rotating mirrors were presented based respectively on the three-dimensional elastic mechanics and dynamics.On strength computation,the finite element models of rotating mirror were established according to the real structure of the mirror,and the rotating three-faced beryllium mirror were analysed.Results display that the surface deformation magnitude of the mirror is approximately 0.334 6 μm,and the maximum stress is 0.204 GPa at 600 m/s of edge linear speeed.The regions of maximum stress are on the axial hole and symmetric to symmetrical planes of mirror body,and keep beelines to surfaces.On the modal analysis,the results show that the first and second modals of bending vibration exist around 3.4×105 r/min and 6.6×105 r/min,which appear binate and orthogonal respectively,and another modal belongs to the first torsional vibration that occurs by 5.13×105 r/min.Analysis indicates that endurance failure by resonances plays vital role for mirror failure rather than static load by body force if manufacturing defects are of nonexistence.

参考文献/References:

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相似文献/References:

[1]黄虹宾,李景镇,惠彬,等.超高速摄影中蜂窝结构转镜性能分析[J].深圳大学学报理工版,2008,25(2):163.
 HUANG Hong-bin,LI Jing-zhen,HUI Bin,et al.Mechanical and optical performance analysis on rotating mirror with honeycomb cellular structure in ultra-high speed camera[J].Journal of Shenzhen University Science and Engineering,2008,25(2):163.

备注/Memo

备注/Memo:
收稿日期:2006-11-30;修回日期:2007-02-02
基金项目:深圳大学科研启动基金资助项目(200504)
作者简介:黄虹宾(1964-),男(汉族),吉林省公主岭市人,深圳大学副教授、博士.E-mail:huanghb@szu.edu.cn
更新日期/Last Update: 2007-12-07