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Damper Optimization Design of High-Speed Energy Storage Flywheel Shafting with a Single Point Flexible Support TANG Changliang1,a, HAN Dongjiang1,b, YANG Jinfu1,c and DAI Xingjian2,d 1 Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing, China 2 Department of Engineering Physics, Tsinghua University, Beijing, China atangcl@iet.cn, bhandongjiang@iet.cn, cyangjinfu@iet.cn, ddaixj@mail.tsinghua.edu.cn Keywords: Single point flexible support; Energy storage flywheel; Gyroscopic effect; Modal damping ratio; Oil damper.
Bitterly, in: IEEE Aerospace and Electronic Systems Magazine, 13 (8): 13-16. (1998) [2] Xingjian Dai, Zupei Shen and Haigang Wei, in: International Journal of Mechanical Sciences, 43 (11):2525-2540. (2001) [3] Li Zhang, Heng Zhang, in: Ordnance Material Science and Engineering, 24 (5): 63-65. (2001) (In Chinese) [4] D.
IEEE, 1: 573-576. (2010) [8] Yoo S, Lee W, Bae Y, et al, in: Journal of mechanical science and technology, 24(1): 231-235. (2010) [9] Werfel F N, Floegel-Delor U, Riedel T, et al, in: Applied Superconductivity, IEEE Transactions on, 17(2): 2138-2141.(2007) [10] Strasik M, Johnson P E, Day A C, et al, in: Applied Superconductivity, IEEE Transactions on, 17(2): 2133-2137.(2007) [11] Xingjian Dai, Zupei Shen, Haigang Wei, in: International journal of mechanical sciences, 43(11): 2525-2540.(2001) [12] Shuyun Jiang,Liping Ju, in: Science in China: Series E Technological Sciences, 49(1): 61-77.(2006) [13] Changliang Tang, Xingjian Dai, Xiaozhang Zhang, Jiang L, in: Journal of Mechanical Science and Technology, 26(9): 2669-2677.(2012) [14] Shihai Ding, Yiliang Li, Xingjian Dai,in: Mechanical Science and Technology for Aerospace Engineering, 27(3): 301-304.(2008)(In Chinese)

Introduction Ferrites are widely used as synthetic materials and minerals in different fields for a long time.
Ferrites are metallic oxide materials.
From the last fifty years, ferrites are dominating as magnetic materials over other materials due to some advantages such as high resistivity, wide range of operating frequencies, low loss combined with high permeability, time and temperature stability, versatility of core shapes and low cost.
Yadav “ Magnetic, Magnetocapacitence and Dielectric properties of Cr doped bismuth ferrite nanoceramics” Materials Science and Engineering B 176 (2011) 227-230
[6] C.Barry Carter, M.Grant Norton “Ceramic Materials: Science and Engineering”

In Materials Science and Engineering A285, 2000, pp. 62-68 [2] Heinz, A. et al.: Recent development in aluminium alloys for aerospace applications.
In Materials Science and Engineering A280, 2000, pp. 102-107 [3] Vogelesang, L.B. et al.: Development of fibre metal laminates for advanced aerospace structures.
In Journal of Materials Processing Technology 103, 2000, pp 1-5 [4] Zhang, Y.K. et al.: Effect of laser shock processing on the mechanical properties and fatigue lives of the turbojet engine blades manufactured by LY2 aluminum alloy.
In Materials and Design, 30, 2009, p. 1697-1703 [5] Rajendran, R. et al.: Condition assessment of gas turbine blades and coatings.
In Materials and Design, 52, 2013, pp. 774-784

The disposal of polymeric residues is of particular concern, since these materials are not readily decomposed [3,4].
According to data supplied by the Brazilian Association of Plastic Industries [5], nationwide there are over 12,000 industries operating in the sector of transforming and recycling plastic materials, most of which predominantly treat thermoplastic resins.
One option is to use this material as a component of concrete.
Adhikari: Journal of Applied Polymer Science Vol. 73 (1999), p. 2951
Ferreira: Science and Technology Vol. 15(1) (2005), p. 73

Introduction In all kinds of architecture design technology, passive technology just uses its own architectural arrangement, materials, structure etc.
Fig.11 The outdoor part of wall surface temperature Passive Cooling Measures of Building Materials and Structure Construction of the Wall.
And the construction materials are local product, with high quality and low price, which belongs to ecological environmental low consumption building materials.
Journal of Chongqing Jianzhu University, 1999(8):24-28
Architectural Journal, 2010(S1): 84-87

Experimental 2.1 Raw materials The coal tar pitch used was a byproduct of the coal coking process supplied by Wuhan Iron & Steel Corporation, Hubei, China.
Acknowledgement This research was financially supported by fund from Coal Conversion and New Carbon Materials Hubei Key Laboratory(Wuhan University of Science and Technology)( WKDM201102).
Zhang, Journal of Colloid and Interface Science, 316 (2007),p. 628–634
Hyeon, Advanced Materials, 12 (2000),p. 359-362
Hyeon, Journal of Materials Chemistry, vol. 14(2004)p. 478-486, doi: 10.1039/b311541k

Intruduction The oxidation characteristic of NiAl-based intermetallics at elevated temperature is one of important issues for their applications as potential high-temperature structural materials in aerospace field[1-3].
Acknowledgements The authors would like to acknowledge National Natural Science Foundation of Hunan Province (contract No.08TP2042-3) and National Advanced Materials Committee of China (A3720060115) for their financial supports.
Journal of Materials Engineering,suppl.2002,370 [5] Nicholls JR, Stephenson DJ.
Natural Defence of Press, Beijing, 2001：534 [12] Mahaton KH (Germen), The Science and Technology of Materials.
Vol(8), Science Press, 1999：529 [13] Zou ZH (American), The Science and Technology of Materials.

The Assessment of Work hardening behaviour of Dual Phase Steels with Coarse Martensite Islands Azam Rasouli1,a, Mohammad Mazinani1,b 1 Department of Materials Engineering Faculty of Engineering, Ferdowsi University of Mashhad, Iran a azamrasouli@yahoo.com, b mazinani@um.ac.ir Keywords: dual phase (DP) steel, work hardening behaviour, martensite-ferrite interface decohsion, martensite cracking.
In this analysis, the stress and strain are related through the Swift equation, i.e. [9]: ε = kσm + εo (1) where ε is the true strain, k is the material constant, m is the work hardening exponent, σ is the true stress and εo is the initial value of true strain.
[9] Jiang, Z., Guan, Z., Lian, J., 1993, Journal of Materials Science, vol. 28, pp. 1814-1818
[11] Xu, H., Yang, W., Sun, Z., 2008, Journal of University of Science and Technology Beijing, vol. 15, pp. 566-560

Construction and Building Materials; Vol.13(8) (1999), p.433-438
The International Journal of Cement Composites and Lightweight Concrete; Vol.11(2) (1989a), p.99-109
S. in: 2nd International Symposium on Vegetable Plants and their Fibres as Buildings Materials (Rilem Proceedings, 7), edited by Sobral H.S, London: Chapman and Hall, (1990), p.98-107
Wood and Fiber Science; Vol.25(3) (1993), p.244-235
Wood Science and Technology; Vol.19(1) (1985), p.57-66

Experiment (1)Materials In the laboratory scale tests, the white lead used in this study was analytical grade >98 pct, it was detected by X-ray diffraction and the result was shown in Fig.1.
For the sulfidation experiments, both materials were mixed thoroughly with various white lead/sulfur ratios.
Acknowledgements This work was financially supported by the Major State Basic Research Development Program of China (2007CB613605), National Natural and Science Fund Council (50904030) and Yunnnan Province Applied Basic Research Item (2009ZC010M) for the financial support of this work.
International Journal of Mineral Processing, Vol.55 (1985), p.113–128
International Journal of Mineral Processing, Vol. 20(1987), p.73-85 [6] G.