中国科学院机构知识库网格系统: 检索

浏览/检索结果: 共9条，第1-9条

帮助

条数/页：排序方式：
	10 kW rectangular laser beam generation with incoherent space combiner 期刊论文 OAI收割 Optik, 2022, 卷号: 260 作者: Tian, Xiao; Bai, Yang; Lei, Guangzhi; Yu, Lidong; Zhou, Jingfeng \| 收藏 \| 浏览/下载：92/0 \| 提交时间：2022/05/07 Incoherent space laser beam combination 10 kW beam combiner Rectangular uniform beam spot Multi-beam laser volumetric heat source Finite element methods Optical lens Thermo-mechanical properties
	Synthesis and characterization of functionalized graphene oxide/polyacrylamide nanocomposites using physical adsorbing and chemical grafting and their applications in polyimide matrix 期刊论文 OAI收割 Journal of Materials Science, 2018, 期号: 53, 页码: 11460-11472 作者: Ji Li; Li Hongxuan; Chen Lei; Zhou Huidi; Chen Jianmin \| 收藏 \| 浏览/下载：66/0 \| 提交时间：2019/01/02 Polymer-graphene Oxide Nanocomposite Modification Methods Polyimide Matrix Mechanical Performance Molecular Dynamic Simulation
	Study of the neural network constitutive models for turfy soil with different decomposition degree (EI CONFERENCE) 会议论文 OAI收割 2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011, July 15, 2011 - July 17, 2011, Inner Mongolia, China 作者: Nie L. 收藏 \| 浏览/下载：22/0 \| 提交时间：2013/03/25 The turfy soil is of a special humus soil. The decomposition degree is the main factor on the physical and mechanical properties of turfy soil. To build the turfy soil constitutive model there are a few shortages such as the calculation cumbersome and low accuracy for parameter value with the method of traditional models. Furthermore those methods did not reflect the influence of strength that effected by decomposition degree of the turfy soil. In this paper the relationship of stress-strain with different decomposition degrees of turfy soil was carried out through indoor tests. Based on above experimental results an improved method which divided into different zones according to different decomposition degrees of turfy soil and calculated combining with neural network constitutive model is put forward. The result shows that the neural network of turfy soil has good fitting precision and good generalization ability. It can fully describe the influence of the turfy soil. 2011 IEEE.
	Thermal difference analysis and athermalization design of infrared optical system (EI CONFERENCE) 会议论文 OAI收割 Optical Design and Testing IV, October 18, 2010 - October 20, 2010, Beijing, China 作者: Zhang X.; Zhang X.; Zhang X. 收藏 \| 浏览/下载：36/0 \| 提交时间：2013/03/25 When infrared optical system works in a large temperature range the thermal effect of optical lens and optical tube will produce image plane shift and lead to imaging quality deterioration. In order to eliminate the thermal aberration the athermalization design principles of infrared optical system were introduced and some commonly used methods of thermal difference compensation were described. Proceeding from single lens the thermal difference caused by temperature changing was analyzed and the relationship between temperature and focus shift was obtained. Considering optical tube thermal expansion a set of equations to estimate the thermal difference of lens group was given. Finally an infrared optical imaging system that can work under the temperature range of -40C to 60C was design according to athermal technique in which a new mechanical passive temperature compensation was proposed. Through simulation the athermalization design could make imaging plane shift the smallest. The simulation results coincided with the theoretical formula and the design had reference value in engineering. 2010 Copyright SPIE - The International Society for Optical Engineering.
	A novel method for preparation of dense silicon-based ceramics 期刊论文 OAI收割 CERAMICS INTERNATIONAL, 2009, 卷号: 35, 期号: 2, 页码: 929-932 作者: Yuchen, Pei; Yongming, Luo; Shuqin, Li; Jialu, Li \| 收藏 \| 浏览/下载：19/0 \| 提交时间：2019/04/09 Precursors X-ray Methods Mechanical Properties
	化学抛光和退火对钛酸锶基片表面改性研究期刊论文 OAI收割人工晶体学报, 2008, 卷号: 37, 期号: 5, 页码: 1107, 1112 陈光珠; 杭寅; 汪隽等收藏 \| 浏览/下载：1119/122 \| 提交时间：2009/09/24 Atomic forces Crystal qualities Mechanical methods Rocking curves SrTiO3 Super-smooth surface
	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：30/0 \| 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.
	Mechanical properties of structural materials from first-principles 期刊论文 OAI收割 Current Opinion in Solid State & Materials Science, 2006, 卷号: 10, 期号: 1, 页码: 19-25 Q. M. Hu; R. Yang 收藏 \| 浏览/下载：28/0 \| 提交时间：2012/04/13 first-principles methods mechanical properties ideal strength elastic modulus lattice defects density-functional-theory grain-boundary cohesion ab-initio calculation intermetallic compounds disordered alloys ideal strength 1st principles segregation embrittlement iron
	EVALUATION OF THE BOLTZMANN DENSITY-MATRIX WITH COUPLING TERM BY MONTE-CARLO RANDOM-WALK METHOD 期刊论文 OAI收割 COMMUNICATIONS IN THEORETICAL PHYSICS, 1992, 卷号: 18, 期号: 4, 页码: 471-474 作者: BAO, JD; ZHUO, YZ; WU, XZ; BAO, JD , BEIJING INST METEOROL,BEIJING 100081,PEOPLES R CHINA. \| 收藏 \| 浏览/下载：22/0 \| 提交时间：2012/08/28 Mechanical Rate Constants Path Integral Methods Dynamics