中国科学院机构知识库网格系统: 检索

浏览/检索结果: 共6条，第1-6条

帮助

条数/页：排序方式：
	Experimental study for the effect of joint surface characteristics on stress wave propagation 期刊论文 OAI收割 GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES, 2021, 卷号: 7, 期号: 3, 页码: 15 作者: Li, Nana; Zhou, Yongqiang; Li, Haibo \| 收藏 \| 浏览/下载：26/0 \| 提交时间：2021/06/18 Stress wave JRC JMC Transmission coefficient Specific stiffness
	Structure bionic design method oriented to integration of biological advantages 期刊论文 OAI收割 STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION, 2021, 页码: 23 作者: Yang, Yong; Zhu, Qi-Xin; Wang, Wei; Peng, Xuan \| 收藏 \| 浏览/下载：27/0 \| 提交时间：2021/06/15 Structure bionic design High-specific-stiffness mechanical structure Integration of biological advantages Matter-element
	A Further Study on Wave Propagation Across a Single Joint with Different Roughness 期刊论文 OAI收割 ROCK MECHANICS AND ROCK ENGINEERING, 2016, 卷号: 49, 期号: 7, 页码: 2701-2709 作者: Chen, X.; Li, Jian Chun; Cai, M. F.; Zou, Y.; Zhao, J. \| 收藏 \| 浏览/下载：25/0 \| 提交时间：2018/06/05 Artificial joint Spatial geometry JMC Transmission coefficient Specific stiffness
	Seismic response of adjacent filled parallel rock fractures with dissimilar properties 期刊论文 OAI收割 JOURNAL OF APPLIED GEOPHYSICS, 2013, 卷号: 96, 页码: 33-37 作者: Wu, W.; Li, J. C.; Zhao, J. \| 收藏 \| 浏览/下载：25/0 \| 提交时间：2018/06/05 P-wave propagation Filled parallel fractures Recursive method Specific fracture stiffness Wave transmission coefficient
	Optimum design of the carbon fiber thin-walled baffle for the space-based camera (EI CONFERENCE) 会议论文 OAI收割 International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications, May 24, 2011 - May 26, 2011, Beijing, China Yan Y.; Gu S.; An Y.; Jin G. 收藏 \| 浏览/下载：14/0 \| 提交时间：2013/03/25 The thin-walled baffle design of the space-based camera is an important job in the lightweight space camera research task for its stringent quality requirement and harsh mechanical environment especially for the thin-walled baffle of the carbon fiber design. In the paper an especially thin-walled baffle of the carbon fiber design process was described and it is sound significant during the other thin-walled baffle design of the space camera. The designer obtained the design margin of the thin-walled baffle that structural stiffness and strength can tolerated belong to its development requirements through the appropriate use of the finite element analysis of the walled parameters influence sensitivity to its structural stiffness and strength. And the designer can determine the better optimization criterion of thin-walled baffle during the geometric parameter optimization process in such guiding principle. It sounds significant during the optimum design of the thin-walled baffle of the space camera. For structural stiffness and strength of the carbon fibers structure which can been designed the effect of the optimization will be more remarkable though the optional design of the parameters chose. Combination of manufacture process and design requirements the paper completed the thin-walled baffle structure scheme selection and optimized the specific carbon fiber fabrication technology though the FEM optimization and the processing cost and process cycle are retrenchment/saved effectively in the method. Meanwhile the weight of the thin-walled baffle reduced significantly in meet the design requirements under the premise of the structure. The engineering prediction had been adopted and the related result shows that the thin-walled baffle satisfied the space-based camera engineering practical needs very well its quality reduced about 20% the final assessment index of the thin-walled baffle were superior to the overall design requirements significantly. The design method is reasonable and efficient to the other thin-walled baffle that mass and work environment requirement is requirement harsh. 2011 SPIE.
	Manufacturing and Testing SiC Aspherical mirrors in Space telescopes (EI CONFERENCE) 会议论文 OAI收割 ICO20: Optical Devices and Instruments, August 21, 2005 - August 26, 2005, Changchun, China 作者: Fan D.; Zhang X.; Zhang X.; Zhang X. 收藏 \| 浏览/下载：23/0 \| 提交时间：2013/03/25 Reaction Bonded (RB) SiC mirrors due to their excellent specific stiffness and thermal properties have been widely used in space telescopes. However polishing large SiC aspherical mirrors is difficult compared to other materials such as fused silica or Zerodu. In addition surface roughness of the polished SiC mirrors is limited by the defects of the materials and needs to be improved by means of surface coating technique. This paper introduces the current progress of large SiC aspherical mirrors manufacturing and testing in CIOMP. In particular the procedures of making large off-axis aspherical mirrors were discussed in detail. A proprietary computer controlled optical surfacing (CCOS) technique was utilized to grind and polish the mirrors and the computer aided null test was used to measure the surface figure. As results a 600mm class off-axis SiC aspherical mirrors was demonstrated with figure error less than 13nm rms.