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In this paper, considering the material properties of the composite flywheel and the characteristics of the pre-stressed structure, stresses and strains induced by rotor rotation and interference fit were calculated by finite element (FE) method based on the plane stress hypothesis, in the commercial software ANSYS.
Based on the given material properties and the main dimension with a certain speed of rotation, three 2D FE-models of hybrid composite flywheel rotors with two-layer rotor structure were built with the unit property of plane stress, axisymmetric and plane strain respectively.
Table 1 The physical dimension of the composite flywheel Items E-Glass/epoxy layer Carbon/epoxy layer ANSYS model of the plane stress /plane strain Inner radius/mm 130 160 Outer radius/mm 160 190 Magnitude of interference/mm 0.2 ANSYS axisymmetric Axial dimension/mm 30 30 According to the composite material is anisotropic and the different coordinate system will be used, so material properties must be adjusted to be fit for the analysis of the plane stress model, plane strain model and axisymmetric model .
International Journal of Mechanical Science, Vol. 43(2001), p. 993-1007 [4] Sung K.
H., Hee_Moon Jeong ,Young-Soo Cho, , Journal of Composite Materials, Vol. 32(1998), p. 851-873

Materials and Methods Ethics Statement.
Acknowledgements This study sponsored by National Natural Science Foundation of China (81772423), K.
Cengiz, EMG and peak force responses to PNF stretching and the relationship between stretching-induced force deficits and bilateral deficits, Journal of Physical Therapy Science. 27 (2015) 631-634
A meta-analytical review, British Journal of Sports Medicine. 41 (2007) 349-355
Journal of Ningbo University (NSEE), 30 (2017) 81-89

The microstructures and properties of these materials were investigated in this paper.
Experiment Materials.
For these materials, the mechanical properties mainly depend on fiber’s strength.
It may be harmful for those materials that are used as thermal insulation.
Journal of Materials Science 29 (2):338-344. doi:10.1007/bf01162488 [4] Davies IJ, Rawlings RD (1994) Mechanical properties in flexure and tension of low density carbon-carbon composites.

For architectural impression the roof is made of unusual materials and complex structures thus cannot be designed with traditional guidelines.
The goal of using DSS is to facilitate and simplify the range of possible materials and structures, to assist and expedite finding the optimal version and to reduce the likelihood of design flaws.
In addition to eco-efficiency in production, transportation, and energy consumption of buildings, we hold it to be important to reduce the amount of materials used to a necessary minimum. [1] To achieve this all materials should be used at places where their specific characteristics prevail most effectively.
Introduction The range of building materials and skills needed to design building structures has broadened amazingly.
Whinston, The evolving roles of models in DSS, Decision Sciences 11 (1980), pp. 337-356

Jeandin, Editor. 1995, The Institute of Materials, pp.469-481
Weis: Surface Science, Vol.340 (1995), pp.16-22
Chen: Materials Science Forum, Vol.505-507, pt.2 (2006), pp.1225-30
Jin and et al.: Journal of Inorganic Materials, Vol.17 (2002), pp.172-174
Zuo and et al.: Key Engineering Materials, (2006), pp.1013-9826

Alternatively, other materials, such as metals with antibacterial properties can be used.
Kumar, Microwave processing of functionally graded bioactive materials.
Materials Letters, 57 (2003) 2716–2721 [12] M.
Miranda, et al., Silver-hydroxyapatite nanocomposites as bactericidal and fungicidal materials.
Journal of Biomedical Materials Research Part A, 80A (2007)581-591

Acknowledgements This program obtained the subsidy from national natural science foundation (51078042, 51278067), the hunan science and technology plan project(2009003)and the western traffic science and technology plan project (2009 318 000 048).
Reference [1] LIU Gefei.An example of deep foundation pit engineering below high slope in mountainous city[J].Journal of Fuzhou University;Natural Sciences Edtion,1999,27(6):75-78
[3] LIU Guang,LI Haoyong.Construction technology for deep foundation of Minzhi station of Shenzhen Metro[J].Journal of Shijiazhuang Railway Institute:Natural Science, 2009, 22 (1):109-111
Chinese Journal of Computational Mechanics, 2001, 18(1): 81-87
Chinese Journal of Rock Mechanics and Engineering, 2004, 23(19): 3381-3388

The consideration on the material with a smooth, easy to clean material to protect themselves from blowing sand, building color use warm color to move, winter cold rich city landscape.
Reflect the correct environmental consciousness; To reduce the destruction of the environment.Using local materials; Improve the flexibility of using space.Consider barrier-free design. 4.
Cold city sculptures can be used in a solid material, such as granite, sandstone, marble and other natural stone material, stainless steel, aluminum alloy, bronze and other metal materials, metal materials, let a person the sense of psychological produce cold in winter, the paint can be coated with warm color to move.
Concrete and other man-made stone material and ceramic, etc.
Mei, in: Cold Areas Building Environment Design Study, edtied by Cryogenic Architectural Technology, 2000 (03) [3] F.Dong,C.H.Wang, in: Cold Area Residential Area Environment Design Study, edtied by Journal of Henan science and technology, 2012（12）

The authors [6] investigated the effect of materials (titanium and nickel alloys) and surface roughness on the tangential contact stiffness, as well as on the friction coefficient.
In-line fretting test Material, specimens and test setup.
The material chosen for this work was the Titanium alloy Ti-6Al-4V.
International Journal of Mechanical Sciences, vol. 50 (10-11), pp. 1519-1525
International Journal of Engineering Science, vol. 49 (2), pp. 203-211

Experiment and discussion Materials.
Riyazuddin: Microchemical Journal Vol. 93(2009), NO. 2, p. 236–241 [5] J.S.Chen,H.M.Zhi: Materials testing technology and Application(Yellow River Water Conservancy Press, China 2008).
(In Chinese) [7] Ministry of machinery industry Shanghai materials institute:Methods for chemical analysis of metallic materials(Machinery Industry Press,China 1984).
Dong: Environmental Science Survey Vol. 25(2007), NO.5, p. 81-83.
Zhao: Journal of North China Institute of Water Conservancy and Hydroelectric Power(Social Sciences Edition) Vol.27(2011), NO.6, p.173.