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Design and thermal-structural analysis of a high power ICRH travelling wave array antennas 期刊论文  OAI收割
FUSION ENGINEERING AND DESIGN, 2021, 卷号: 166
作者:  
Batal, T.;  Ragona, R.;  Hillairet, J.;  Yu, C.;  Bernard, J-M
  |  收藏  |  浏览/下载:36/0  |  提交时间:2021/06/15
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:43/0  |  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.  
Dome design and coupled thermal-mechanical analysis of supersonic missile (EI CONFERENCE) 会议论文  OAI收割
2009 International Conference on Optical Instruments and Technology, OIT 2009, October 19, 2009 - October 22, 2009, Shanghai, China
Xing-qiao A.; Qun W.; Hong-guang J.
收藏  |  浏览/下载:58/0  |  提交时间:2013/03/25
A review of high-speed flow pressure and aerodynamic heating effect on Supersonic missile's dome is given. The dome should have excellent properties in optical  mechanical and chemical characteristics. A design of dome on supersonic mode is described according to tactical guide line of a missile. The dome made of quartz which is about 8mm thick and 141mm in window diameter. To check up the reliability of the dome  a reasonable finite element model (FEM) of dome is established  and a thermal-mechanical Analysis to the dome by finite element software NASTRAN has carried on  through these can obtained the distribution of temperature field and stress field when the speed is 2.3Ma. The results indicated that the stress was concentrated in the joint of the dome end and the Missile Section  and the maximum stress was 16.4Mpa. The stress of other nodes was smaller than the allowable stress of quartz glass. Reference to the results of the analysis  a lightweight revision to the dome structural dimension and a new method of dome fixing have put forward  which can reduce the stress concentration. 2009 SPIE.  
Thermal analysis and water-cooling design of the CSNS MEBT 324 MHz buncher cavity 期刊论文  OAI收割
CHINESE PHYSICS C, 2008, 卷号: 32, 期号: 4, 页码: #REF!
作者:  
Liu HC(刘华昌);  欧阳华甫;  Liu, HC;  Ouyang, HF
收藏  |  浏览/下载:21/0  |  提交时间:2016/04/12
Thermal analysis and water-cooling design of the CSNS MEBT 324 MHz buncher cavity 期刊论文  OAI收割
中国物理C, 中国物理C, 2008, 2008, 期号: 4, 页码: 280-284, 280-284
作者:  
Liu HC(刘华昌);  欧阳华甫
  |  收藏  |  浏览/下载:14/0  |  提交时间:2015/12/14
Transient thermal and structural deformation and its impact on optical performance of projection optics for extreme ultraviolet lithography 期刊论文  iSwitch采集
Japanese journal of applied physics part 1-regular papers brief communications & review papers, 2007, 卷号: 46, 期号: 10a, 页码: 6568-6572
作者:  
Liu, Ke;  Li, Yanqiu;  Zhang, Fuchang;  Fan, Mingzhe
收藏  |  浏览/下载:33/0  |  提交时间:2019/05/10
Methods for integrated simulation of high-precision space optomechanical systems (EI CONFERENCE) 会议论文  OAI收割
3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies, AOMATT 2007: Advanced Optical Manufacturing Technologies, July 8, 2007 - July 12, 2007, Chengdu, China
Dong W.; Guang J.; Hong-bo Y.
收藏  |  浏览/下载:24/0  |  提交时间:2013/03/25
Each disciplinary has its own modeling and analysis tools to solve its own specific field problems. In order to achieve integrated simulation of high precision space optical systems and predict optical performance respective to the mechanical and thermal loads  data must pass through different analysis tools. Simulation tools used in the thermal  structural and optical design process and the relationship among them were first depicted and the integrated simulation methods were described in detail. Zernike polynomial fitting methods and interpolating approaches were also demonstrated. Because of the orthogonality of Zernike polynomials  it was not probably used in some situations such as noncircular apertures and discrete data  and the coupling of Zernike polynomial coefficients and other methods were also introduced in the paper. The toolkit OMTIA (Optical  Mechanical and Thermal Integrated Analyzer) based on the methods was developed  which appears as an indispensable tool for engineering practice.