[1]陈志远,钱瑞明,陈志平,等.Hα与白光望远镜的结构模态分析和改进设计[J].东南大学学报(自然科学版),2005,35(4):541-544.[doi:10.3969/j.issn.1001-0505.2005.04.010]
 Chen Zhiyuan,Qian Ruiming,Chen Zhiping,et al.Modal analysis and design improvement on Hα and white light telescope[J].Journal of Southeast University (Natural Science Edition),2005,35(4):541-544.[doi:10.3969/j.issn.1001-0505.2005.04.010]
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Hα与白光望远镜的结构模态分析和改进设计()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
35
期数:
2005年第4期
页码:
541-544
栏目:
机械工程
出版日期:
2005-07-20

文章信息/Info

Title:
Modal analysis and design improvement on Hα and white light telescope
作者:
陈志远13 钱瑞明2 陈志平15 杨世模1 薛俊荪4
1 中国科学院国家天文台, 北京 100012; 2 东南大学机械工程系, 南京 210096; 3 中国科学院研究生院, 北京 100039; 4 南京天文光学技术研究所, 南京 210042; 5 杭州电子科技大学机电工程学院, 杭州 310018
Author(s):
Chen Zhiyuan13 Qian Ruiming2 Chen Zhiping15 Yang Shimo1 Xue Junsun4
1 National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
2 Department of Mechanical Engineering, Southeast University, Nanjing 210096, China
3 Graduate School, Chinese Academy of Sc
关键词:
Hα与白光望远镜 模态分析 模态试验 优化设计
Keywords:
Hα and white light telescope modal analysis modal experiment optimal design
分类号:
TH753
DOI:
10.3969/j.issn.1001-0505.2005.04.010
摘要:
运用有限元分析软件MSC.PATRAN/NASTRAN建立了Hα与白光望远镜的有限元模型,采用特征向量法求得前四阶固有频率和振型.用自由悬挂和单点激振多点拾振的模态试验方法,获得了该结构的模态参数.试验结果与计算结果对比表明,两者模态参数的最大误差为6.4%,振型相似.以提高基频、减轻质量为目标,对望远镜结构进行了优化计算,根据优化结果对结构进行了改进设计.
Abstract:
In order to realize the mechanical characteristics of Hα and white light telescope(HWT), the analytical model of HWT is set up by using the finite element analysis software MSC.PATRAN/NASTRAN, and the first several orders of natural frequencies and modal shapes are calculated with eigenvectors method. Based on modal experiment with free hanging, single input/multi-output methods, the modal parameters of HWT are identified. The maximum relative error between the experiment results and the calculated results is 6.4%, and the vibration shapes from experiment are similar to those from calculation. In order to increase base frequency and reduce weight of HWT, structural optimization and design improvement design are carried out.

参考文献/References:

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备注/Memo

备注/Memo:
基金项目: 中国科学院知识创新工程资助项目(KJCX2-T01).
作者简介: 陈志远(1973—),男,博士,高级工程师,sat@sst.bao.ac.cn.
更新日期/Last Update: 2005-07-20