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The first layer frame rod unit and beam on the upper derrick have greater stress, closing to the yield strength of the material.
Seeing that it has material waste in the original design.
It can be easily to make optimal design for the derrick back inclined support, dangerous section and material selection, in accordance with the derrick stress distribution.
Journal of Qingdao Agricultural University (Natural Science). 2009. 26 (1) : 49～51

It is a new type of green environmental treatment technology for the material surface, and has been broad applied in aerospace, machinery, electronics, decoration and other fields.
[2] J.Yahalom, Proc shmp oxic-Electrolyte Interfaces (Edited by R.S.Alnitt), The journal of Electrochem, Inc. 10(1973) 503-506
Applied Surface Science, 253(2007)6939-6945
Materials Protection, 1 (2009)

Table 1 shows material properties using in this simulation.
Acknowledgements The author was supported through the 21st Century COE Program, "Mechanical Systems Innovation," by the Ministry of Education, Science and Technology.
References [1] Kazuro Kageyama et al., : Acoustic emission monitoring of a reinforced concreate structure by applying new fiber-optic sensors, Smart Materials and Structures, 14, 2005, S52-59 [2] Kazuro Kageyama et al.,: Doppler Effect in Flexible and Expandable Light-Waveguide and Development of New Fiber-Optic Vibration/Acoustic Sensor，IEEE Journal of Light wave Technology，Vol. 24, No. 4, 2006, pp. 1768-1775

Gangloff 1 1: Department of Materials Science and Engineering, University of Virginia, Charlottesville, Va 2: Division of Materials Science and Engineering, Gyeongsang National University, Chinju, Korea jsw5e@virginia.edu, sang@gsnu.ac.kr, rpg7y@virginia.edu Keywords: fatigue, sodium molybdate, chromate, hydrogen embrittlement, AA7075-T6 ABSTRACT The objective of this study is to quantify and understand the effectiveness of a hexavalent chrome replacement ion to inhibit environmentally assisted fatigue crack propagation (EFCP) in high strength aluminum alloys.
Gangloff. in Fatigue '02, Anders Blom, ed., Engineering Materials Advisory Services, West Midlands, UK, pp. 3401-3433 (2002)
Corrosion Science. 45, pp. 1921-1938 (2003)
International Journal of Fatigue. 24, pp. 803-809 (2002)
Corrosion Science. 47, pp. 1227-1237 (2005)

Materials and methods Plant Material and Experimental Design.
The selected seeds of six maize materials were sterilized with 0.5% solution of sodium hypochlorite for 20 min [34] and washed five times with distilled water.
A two-way analysis of variance was used to determine the main effects of UV-B radiation, maize materials and their interactions on fresh weight, dry weight, net photosynthetic rate and Fv/Fm.
Among the six materials, Nongda108 and Zhengdan958 showed maximum Fv/Fm of 0.716 and 0.722, whereas Yellow c and Chang7-2 showed a minimum Fv/Fm of 0.641 and 0.664, respectively.
Zhang: Journal of Forestry Research Vol. 20(2009), p. 383-390

Because pavement engineering is one of the major materials consumers in the construction industry [1], the design stage should be carried out aiming the use of alternative and renewable materials in order to meet the sustainable development concepts and to satisfy the extension process of national road network.
Materials and research methodology The study aims to identify the deficiencies of using RA mixtures on the properties of fresh and hardened state PCC and RCC.
RA mixture contamination with other types of materials is often inevitable when dealing with industrial production.
Taranu, Recycled aggregates and rigid pavement engineering, Journal of Applied Engineering Sciences, vol. 2(15), issue2_2012, (2012), 61-68
Florescu, Use of recycled materials in the construction of roller compacted concrete (RCC) pavements, Advanced Materials Research Vol. 649, Trans Tech Publications, Switzerland, doi: 10.4028/www.scientific.net/ AMR.649.262, (2013), 262-265

Beijing: China environmental science press, 1997.
Leather Science and Engineering, 2006,16(3):42-46.
Green luminescent iridium(Ⅲ) complex immobilized in fluoropolymer film as optical oxygen-sensing material[J].
Chinese Journal of Health Laboratory Technology, 2004, 14(1): 24-25.
Journal of Northern Sichuan Education College(Natural Science), 1996, 6(2): 48-53.

However, if critical temperature is exceeded when machining a component, materials with no strain hardening gain advantage in strength, ductile and elastic properties.
Without accounting for surface temperature and temperature gradients influencing mechanical characteristics of machined materials, calculation errors will worsen.
Increase of heat buildup in the contact zone of tool surfaces and machined materials leads to mechanical property change in the contacting pair, for example, to decrease of hardness of the machined material.
New York: Springer Science+Business Media, LLC, 2007
Journal of Friction and Wear. 35 No. 5 (2014) 389-395.

THE MODELING GEAR OPTIMIZATION DESIGN RESEARCH BASED ON PRO-E ZHE MING 1,a 1School of Mechanical Engineering, Jilin Agricultural Science and Technology University, Jilin 132101,China ajlnkjxgc@126.com Keywords: PRO-E, Gear, Modeling, Optimization Abstract.
And its range is 8~15℃； is the coefficient of linear expansion of gear material, and it is to steel. 2) The initial value estimation of ISO formulary We can estimate the initial value of gear shape correction according to the ISO formulary so as to divide the parameters of created models.
[J].Taiyuan University of Science and Technology Journal, 2012,(1):45-49 [2] WangXiao lin, XieGang, MaXue jie.
Tianjin University of Technology Journal, 2009, 25(4):26-28 [4] QiaoXiao yan, FuYu, WangJun.

The authors of the book [3] „Energy Harvesting Technologies” have described the thermoelectric phenomena observed in cells, with special attention paid to the influence of material properties on the Seebeck coefficient.
Journal of KONES Powertrain and Transport, Vol. 18, No. 3, 2011, pp 347-358
Journal of KONES Powertrain and Transport, Vol. 18, No. 4, 2011, pp 357-368
Thermal Science, 2011, Vol. 15, No. 4, pp. 1011-1022
[7] Michał Lubieniecki, Tadeusz Uhl: Thermoelectric energy harvester for a smart Bering koncept. 13th World Congress In Mechanism and Machine Science, Guanajuato, Mexico, 19-25 June, 2011.