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Analysis and Design of High-speed Flywheel on Satellite Energy Storage/Attitude Control System Jianyu ZHANG 1,a, Yue FU 1,b, Libin ZHAO 2,c, Jiancheng FANG 3,d 1 School of Aeronautic Science and Technology, Beihang University, Beijing, 100083, China 2 School of Astronautics, Beihang University, Beijing, 100083, China 3 School of Instrument Science and Opto-electronics Engineering, Beihang University, Beijing, 100083, China a jyzhang@buaa.edu.cn, b1983fuyue1983@163.com, clbzhao@buaa.edu.cn, dfjc@263.com Keywords: Flywheel Rotor, Composite Materials, Strength, Failure Abstract.
The rotation speed of this flywheel rotor is set 50000rpm and the multi-ring composite components adopt the same materials.
The half-elliptic isoline near the inner surface illustrated the weakness of the metal materials graphically.
There are many approaches to reduce the maximum stress of the structure to ensure the safety of metal materials.
However, the tangential stress is not the key attention for high strength characteristic of composite material in the fiber direction.

Research on Mechanical Properties of a New Fabricated Wall Material in Building with Light Steel Structure Changlin Wang*, Shuren Jiang, Baocun Li, Shuai Li The First Company of China Eighth Engineering Division Ltd, Jinan 250220, China *Corresponding author e-mail:chilamwang@126.com Keywords: fabricated, wall material, light steel structure, construction, mechanical properties.
The results of various indexes show that this new wall material structure has a safe and reliable structural composition and excellent mechanical properties, and the material forms and material quality can be customized, it enriches the application design range of building material architecture and is worth promoting.
Mechanical Performance Analysis of Key Nodes The connection and joint nodes between the frame steel beam and the frame column of the fabricated thermal insulation decorative wall unit are the key nodes that need to be researched in this project.
Fig.15. 3D diagram of key nodes Fig.16.
[8] "SAP2000 Technical Guide and Engineering Application", ISBN978-7-114-14575, Beijing Zhuxinda Engineering Consulting Co., Ltd., People's Communications Press.

The key to improve the filtration efficiency of fiber materials is that water pass through the fiber bed, the porous structures of fiber in-depth bed is controlled by the internal construction, fiber arrangement, and fiber zigzag degree.
Limited by the materials, it is very difficulty to reform this features.
Utilization of soft filling materials is a renovation which breaks granular limits.
Extended engineering of Sanhe Waterworks in Taian City.
Water & Wastewater Engineering 2004(5):21-24 [8] Wanjun FU, ZL2007 1 00647 14.9 State Intellecture Property Office of The peoples Republic China Jun.29 2011.

., 85, Deshengmenwai Street, Xicheng District, (100088) Beijing, China 3Wu Han University of Science and Technology, 947, Heping Street, Qingshan District, China azhx118153@163.com,bmengguangli@hotmail.com, c lvyuejing@126.com Key words: highway engineering; fine sand filling embankment; strength reduction; finite difference method; stability; numerical analysis Abstract: It is serious problem of the deficiency of high quality embankment filling in the expressway construction in shanghai, the Yangtze estuary fine sand has been extensive applied as the substitute filling material to avoid destroying the cultivated land and cropland.
For the natural sand is no-viscous bulk solid material with great variation on mechanical properties to traditional embankment filling, now there are some problems on the application of fine sand filling embankment engineering haven’t been analyzed such as the highway performance of fine sand filling embankment.
For the natural sand is no-viscous bulk solid material with great variation on mechanical properties to traditional embankment filling, now there are some problems on the application of fine sand filling embankment engineering haven’t been analyzed such as highway performance of fine sand filling embankment.
[2] Jiang Xin; Qiu Yanjun; Wei Yongxing, Engineering behavior of subgrade embankments on sloped weak ground based on strength reduction FEM, Chinese Jounal of Geotechnical Engineering, 2007(04), 622-627
Journal of Geotechnical Engineering, ASCE, 1996, 122(7):577~595

Research of Novel Functional Stealthy Nanomaterials Qiang Wang 1,2,3,a, Lingna Sun1,4,b, Changwen Hu1,a, Chuanbao Cao2,a 1 School of Chemistry, Beijing Institute of Technology, Beijing 100081, China 2School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China 3Laboratory for Micro-sized Functional Materials ＆ College of Elementary Education, Capital Normal University, Beijing 100048, China 4School of Chemistry and Chemical Engineering, Shenzhen University, Shenzhen 518060, China aqwchem@gmail.com, blindasun1999@126.com Keywords: nano-materials，stealthy mechanism，functional materials Abstract.
New stealthy materials are the basis and key of stealthy technology and their developments are promoted by the improvements of detection and guidance of military technology.
Materials used for stealthy purposes were known as stealthy materials.
Stealthy material is the key to stealthy technology, which includes nano-stealthy-materials, chiral materials, conducting polymers, polycrystalline iron fibers, high temperature ceramic materials, salts absorber, etc.
Nano-ceramic absorbing materials, metals and alloys absorbing materials, composite absorbing materials, oxide absorbing material and the transition metal sulfide absorbing materials, etc. are the current focuses of stealthy materials [6-19].

Heat Cutting for Remanufacture Hardness Deposited Materials Zhiyuan Wu1,a, Xiaojun Shi1,b, Xinli Tian1,c, Xiujian Tang1 and Shu Zhang1 1National Key Laboratory for Equipment Remanufacturing, Academy of Armored Force Engineering, China, 100072 aWu_zhiyuan20021@163.com, bshixiaojun01@sina.com, ctianxli719251@sohu.com Keywords: Heat cutting, High hardness materials, Remanufacture, Impact cutting Abstract.
Three cutting tools, YG610, Si3N4 ceramic tool and CBN were adopted for heat cutting deposited materials.
The deposited materials whose hardness is HRC60 were cut with all kind of cutting parameter.
So the Si3N4 ceramic tool is not suitable for heat cutting hardness materials.
Brozek: Journal of Materials Processing Technology, Vol. 168 (2005), pp. 488-495

Based on the integration of CAD and CAE, a variant design method with the function to satisfy engineering constraints is put forward.
Some key technology problems of variant design method, such as how to integrate CAD/CAE and with the function to satisfy engineering constraints, are not resolved yet.
In the design of mechanical products, CAE technology has became the main way of solving engineering analysis in recent years.
Therefore, this repetitive larger engineering analysis problem can be solved through a automatic analysis process templates based on the parameter.
Beijing：The computer engineering and design (2002), 95-98 [4] Shumin Ma.

State Regulation Of Investment Activities In Russian Mechanical Engineering A.N.
It is obvious that Russian mechanical engineering does not benefit from foreign investment.
Studies show that the activity of foreign capital in Russia is largely focused on the industries related to the production and export of energy resources and raw materials.
Funds allocated for capital investment are expected to be accumulated in the “development budget”, which will be a framework for the formation of targeted centralized funds used in the priority sectors of mechanical engineering – a construction fund for key facilities in mechanical engineering, electric power industry, transportation and capital construction funds to finance infrastructure projects.
[2] Analytical bulletin “Mechanical engineering: trends and forecasts”.

Talk about Approaches of Specialized English Teaching in Technology Undergraduate University Wenhong Liu School of Electronic and Information Engineering, Shanghai Dianji University, Shanghai, 200240, China liuwenhong@sdju.edu.cn Key words: technology undergraduate, electronic and information engineering, specialized English, teaching reform Abstract.
The professional English is in electronic and information engineering department.
-X, Jia: Engineering Specialty Discussed Foreign Language Teaching.
Journal of Henan Engineering Institute (Natural Science Edition), (2009) [4] N.
Ren: Specialized English Course on the Major of Electronic and Information Engineering.

It offers great possibilities for use both in civil engineering [1], and in transport engineering [2 and 3].
Field tests of cementitious composites suitable for protective structures and critical infrastructure. (2017) Key Engineering Materials, 722 KEM, pp. 3-11.
Key Engineering Materials, Trans Tech Publications Ltd, Special Concrete and Composites 2016, 2016, vol. 722, no.
Evaluation of crack formation in concrete and basalt specimens under cyclic uniaxial load using acoustic emission and computed X-Ray Tomography (2017) Key Engineering Materials, 722 KEM, pp. 247-253.
Laser-ultrasonic testing of the structure and properties of concrete and carbon fiber-reinforced plastics (2017) Key Engineering Materials, 722 KEM, pp. 267-272.