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Microstructures and tensile properties of nano-sized SiCp/Al-Cu composites fabricated by semisolid stirring assisted with hot extrusion 期刊论文
Materials Characterization, 2017, 卷号: 131
作者:  Wang, L.;  F. Qiu;  Q. Zou;  D. L. Yang;  J. Tang
收藏  |  浏览/下载：25/0  |  提交时间：2018/06/13
全复合材料无人机机翼结构优化设计 学位论文
博士: 中国科学院大学, 2014
丁玲
收藏  |  浏览/下载：232/0  |  提交时间：2014/08/21
Structural design of large aperture rectangular mirror for space telescope (EI CONFERENCE) 会议论文
2nd International Conference on Civil Engineering and Transportation, ICCET 2012, October 27, 2012 - October 28, 2012, Guilin, China
Li Z.
收藏  |  浏览/下载：27/0  |  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.  
Structural design of large aperture rectangular mirror for space telescope 会议论文
2nd International Conference on Civil Engineering and Transportation, ICCET 2012, October 27, 2012 - October 28, 2012, Guilin, China
Li Z.
收藏  |  浏览/下载：8/0  |  提交时间：2014/05/15

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