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In this phenomenon, a significant deflection from stability occurs in elastic zone of the material and can be resulted to the collapse of the structure.
Material is a Carbon/Epoxy called T300/976 commercially and has the following properties: , , , , , thickness (t) = 0.1429 mm.
Jones: Mechanics of Composite Materials. 2nd Ed.
Journal of Aeronautical Sciences Vol. 24 (1957), pp. 390-391

As the nonmetal material has low modulus of elasticity, it negative effects caused by imprecise installation and production and be lessened.
Meanwhile, as the heat-conducting property of the nonmetal material is weak, the mating gears which clench the teeth are still made of steel or cast iron to radiate the heat.
The gap can be determined according to the following formula: are elastic modulus of axle journal material and bushing material respectively
E-mail: z_yhs@163.com Fund: Natural Science Foundation of Hainan Province (808127) References [1]Han Xuanwu , Zheng Li ,Offset works and technique .

After a year ,the completion of the project, think about the works once more you can find the caution and love of life that planners show in dealing with the relationship between man and nature , and the respect to all living and non-living, respect, and the basic ideas is the essence of reducibility strategy, mainly shows in the following three aspects: (1) Fully demonstrate Valley’s natural landscapes, and strive to minimize the amount of development (2) The reversible methods, simple structure, recycling materials, environmental protection, can be restored
(3) Permanent building is used of local natural materials to combine with the native environment
Journal of Tongji University (Social Science Edition), 2006,17(5):29

Mittemeijer: Journal of Applied Crystallography 38, 1-29 (2005) [7] R.
Breidenstein: Advanced Engineering Materials 10, 7, 613-616 (2008) [12] B.
Denkena and Breidenstein: Materials Science Forum 524-525, 607-612 (2006) [14] B.

The Characterisation of Oxide Scales Grown On Nickel Containing Steel Substrates Using Electron Backscatter Diffraction R.L.Higginsona , G.D.Westb and M.A.E.Jepson c IPTME: Institute of Polymer Technology and Materials Engineering, Loughborough University, Loughborough, Leicestershire, LE11 3TU, UK.
Birchnall Journal of Metals (1952) p.889. 4.
West: Materials Science Forum, Vol. 399 (2005), p.495. 7.

(kN) (7) Where is normal module(20mm);is hob rotative velocity(r/min);is hob duration (960min); is hobbing feed depth(45.0mm);is workpiece tooth(=93); is workpiece material correction factor(=1); is workpiece hardness correction factor(=1.15); is workpiece helical angle correction factor(=1.08);is hob diameter(290mm).
Fig. 3 Gear hobbing of NC gear hobbing machine Fig. 4 Simplification of hob bar Fig.5 Simplification of workpiecesindle According to the relative theory of material mechanics，With equation (1), (5)and (7)，the hob and workpiece spindle max deflection variable underdirection cutting defomation as follows, (mm) (8) (mm) (9) Where is hob bar length (600mm); is hob bar material modulus of elasticity(2×1011Pa); is hob bar radiometer(40mm); is height between cutting point and upper surface of lathe bed (870mm); is workpiece spindle material modulus of elasticity(2.03×1011Pa); is workpiece spindle radiometer(100mm).
Acknowledgment This research was supported by National Key Project for High-end CNC Machine Tools and Basic Manufacturing Equipment (Grant No. 2009ZX04001-081), the National Natural Science Funds for Distinguished Young Scholar (Grant No.50925518), 2011 Chongqing Key Scientific and Technological Project (Research on the thermal deformation prediction and machining error compensation of large-scale double-column vertical NC gear hobbing machine).
Reference [1] Unuver A: Petroleum Division, Vol. 81 (1996), p. 131 [2] WU Hao, HU Wei, LU Zhi-zheng, et al: Journal of Shanghai Jiao Tong University, Vol. 41 (2007), p. 1696 [3] Liu Dawei, Qin Shian, Zhang Yi: Shandong Machine, Vol. 1 (2004), p. 15 [4] Zhang Houjiang, Chen Wuyi, Chen Dingchang: Aeronautical Manufacturing Technology, Vol. 7 (2004), p. 57 [5] Chen Peng.

Effect of Boron and Chromium on Hardenability in 0.33% C Cold Heading Steel Shi Peng Ruan1, 2, 3,a, Ai Min Zhao1,b, Yong Chao Li 2, 3,c, Ming Yi Guo 2, 3,d, Zhao Yong Song 2, 3,e 1.Metallurgy Engineering Research Institute; University of Science and Technology Beijing, Beijing 100083, China 2.
Experimental materials and procedures Table 1 lists the chemical compositions of the steels examined.
Selection analysis of five kinds of cold-heading steel materials[J].RECHULI JISHU YU ZHUANGBEI, 2010,31(1):26-31
Application of artificial neural network to predicting hardenability of gear steel[J].Journal of iron and steel research, international ,2006,13(6):71-73

An Efficient Game Level Generation in Web-based Serious Game Jung-Tsung Chen1,a, Shao-Shin Hung2,b, and Derchian Tsaih3,c 1 Department of Applied Game Technology, WuFeng University, Chiayi, Taiwan 2Department of Computer Science and Information Engineering, WuFeng University, Chiayi, Taiwan 3Department of Electronic Commerce Management, Nanhua University, Chiayi, Taiwan a jtchen@mail.wfu.edu.tw, b hss@cs.ccu.edu.tw, c dtsaih @mail.nhu.edu.tw Keywords: Serious game, Cultural heritage, Gameplay, Game level design Abstract.
On the other side, cultural heritage education in most countries was based for a long time on traditional teaching methods; this meant that it usually relied on face-to-face classroom lessons held by one single teacher (often the one in charge of ‘‘Arts”), on the study of printed materials (texts and images), and very seldom on watching videos.
To prove the feasibility of the system, the lecture materials from Taiwan “Hakaa Cultural Stories” module were ported into the online virtual environment.
Jacobson, The Effect of Visual Immersion in an Educational Game; Gates of Horus, International Journal of Gaming and Computer-Mediated Simulations (IJGCMS), special issue on educational applications (2011), IGI Global., Spring

For the 4 curves with different degree of material anisotropy, the higher the anisotropy is, the greater the least principal stress will be.
With the increasing of degree of material anisotropy the changing pattern becomes into a mode like a parabola.
The four curves for four different degree of material anisotropy almost keep horizontal except that a slight growing tendency occurs over 60 degrees.
The higher the degree of material anisotropy is, the greater the changing gradient of the maximum shear stress would be.
Journal of Petroleum Science and Engineering Vol. 72(2010)3-4, pp. 229-235 [5] D.

Inoculation cultivation method Inoculation culture method is to add a part of anaerobic bacterial-sludge or large amounts of methane bacteria materials on anaerobic digestive tank to culture.
As the methane bacteria to grow continuously, that can make more use of materials such as carbon dioxide, acetic acid to produce methane, which lead to the anaerobic digestive performance of the whole system gradually stable.
Journal of sichuan environment, 2007, 26 (3) : 1-4
Environmental science and technology, 2010, 23 (2) : 41-44 [4] Yang Liangong, sludge anaerobic digestion reactor engineering application analysis and research , chang 'an university, 2008 [5] Wu Gongjuan, such as a sewage treatment plant, egg-shaped anaerobic digester restart the instance , water supply and drainage, 2010, 4 (10) : 16 to 18 [6] Zhang Chen etc, no sludge anaerobic digestion system startup strategy study , China's water supply and drainage, 2011, 27 (13) : 12-15