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浏览/检索结果: 共7条，第1-7条 帮助

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A Structure Load Performance Integrated Model Method for the Bridge-Type Displacement Amplification Mechanism 期刊论文  OAI收割
MACHINES, 2022, 卷号: 10, 期号: 9
作者:  Tian, Feifei;  Li, Siyuan;  Hu, Bingliang;  Wang, Pengchong;  Hao, Xiongbo
  |  收藏  |  浏览/下载：43/0  |  提交时间：2022/10/10
Design and optimization research of phi 1.6m space mirror and its supporting structure 会议论文  OAI收割
ELECTR NETWORK, 2022-11-24
作者:  Wei De Jing;  Wang Wei;  Hu Bin;  Lin Shang Min;  Cheng Peng Fei
  |  收藏  |  浏览/下载：9/0  |  提交时间：2023/06/19
Design of secondary lens focusing mechanism for multispectral camera 会议论文  OAI收割
Xi'an, China, 2021-05-28
作者:  Rui, Wang;  Xiuqin, Su;  Yongming, Qiao;  Tao, Lv;  Xuan, Wang
  |  收藏  |  浏览/下载：41/0  |  提交时间：2021/07/20
Calculation and Analysis of Flexibility Matrix for V Flexible spherical Hinges with Chamfer 会议论文  OAI收割
ELECTR NETWORK, 2020-05-15
作者:  Bao Chaonan;  Jiang Bo
  |  收藏  |  浏览/下载：18/0  |  提交时间：2021/04/30
A Focusing Mechanism Based on Flexible Hinges for Space Telescope 会议论文  OAI收割
Qingdao, PEOPLES R CHINA, 2019-05-19
作者:  Ma, Xiaozhe;  Li, Chuang;  Cheng, Penghui;  Hu, Bin
  |  收藏  |  浏览/下载：29/0  |  提交时间：2020/03/04
Structural design of large aperture rectangular mirror for space telescope (EI CONFERENCE) 会议论文  OAI收割
2nd International Conference on Civil Engineering and Transportation, ICCET 2012, October 27, 2012 - October 28, 2012, Guilin, China
作者:  Li Z.;  Li Z.
收藏  |  浏览/下载：42/0  |  提交时间：2013/03/25
Structural design of large aperture mirror is one of the key technologies for space telescope development. To meet the requirements of high stiffness  strength and thermal dimensional stability  some factors such as support scheme  materials selection  lightweight design and flexible support design were taken into account. The three supports location of the mirror was determined according to the modal analytical solution. By adjusting the parameters of flexure hinge  influences of gravity  assembly stress and thermal stress on the mirror were reduced obviously. Finite element analysis (FEA) results indicate that the surface accuracy reach to rms10.2nm and 10.8nm under the gravity along optical axis direction and 5C uniform temperature rise respectively  the fundamental frequency of the mirror component is 268Hz. Dynamics test shows that the first order natural frequency is 256Hz  which shows an error less than 5% compared to FEA results. (2013) Trans Tech Publications  Switzerland.  
Contact-impact analys with clearance hinge in flexible multi-body system (EI CONFERENCE) 会议论文  OAI收割
2nd Annual Conference on Electrical and Control Engineering, ICECE 2011, September 16, 2011 - September 18, 2011, Yichang, China
Ge M.; Jia H.; Liu B.
收藏  |  浏览/下载：52/0  |  提交时间：2013/03/25
Hinge in mechanical systems exist small clearance and contact deformation  After consideration of flexible components  cause the system to the wear and tear  impact force reduced at the clearance  noise  contact time increased  vibration  contact-impact areas expand and clearance also caused disturbance of the rod angular velocity of the linkage. 2011 IEEE.  reliability reduce or even failure[1]. Therefore  the hinge clearance and the impact of flexible components in kinetic models should be considered. In this paper  a nonlinear spring-damper hinge clearance model is considered to establish mechanical system structure of dynamic equations[46]  through a four-bar linkage hinge with multi-clearance rotation of ADAMS dynamic simulation for dynamics simulation study. Simulation results show that hinge clearance and link flexible in Four-link mechanism dynamics have a great impact on performance: connection with the clearance lead to pin holes to produce a series of collisions  and a larger initial impact force