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Analysis Design Performance of Tircone Bit LIN Yulong Southwest Petroleum University,School of Mechatronic Engineering, Chengdu, China swpilin@163.com Keywords:three cone bit; performance analysis; optimal design; cutting structure; meshing clearance; rock breaking efficiency Abstract:There were described about the basic theory and methods, main content, and functional characteristics of the performance analysis of three-cone drill bit.
From the several key areas in drill bit design, the objectives and approaches of optimization are analyzed, and its impact on design quality of drill is also discussed.
This greatly improve the accuracy of the bit design, scientific and reliable, and reduce the blind trial and repeated trial times, manpower and material resources, the bit of the development cycle and the development costs of new products and significantly improve the design quality of the bit. 4.

Function-oriented Design and Verification of Point-contact Tooth Surfaces of Spiral bevel and Hypoid gears with the Generated Gear Wu Xuncheng a, Li Cong b College of Automotive Engineering, Shanghai University of Engineering Science, Shanghai 201620, China a wuxuncheng@yahoo.com.cn, blicong@ae.buaa.edu.cn Keywords: Spiral bevel gear, Hypoid gear, Generated gear, Point-contact tooth surface, Function-oriented design, Verification Abstract.
Acknowledgement This research is supported by the Key Technology Development Project of Shanghai Municipal Education Commission（09ZZ191）and 085 Project in Shanghai（JZ0901）.
References [1] Litvin F L, Gutman Y: ASME Journal of Mechanical Design, Vo1.103(1981) , p.114 [2] Dong Xuezhu: Journal of Beijing Agricultural Engineering University， Vo1.10（1990）, p.16 [3] Tian Xingbin, Fang Zongde: Journal of Aerospace Power， Vo1.15（2000）, p.75 Table 3 Verified results No. 1 2 3 1 )2( 1 dd ϕs (mm.rad 1− ) -17.578 -17.361 -16.840 1 )2( 2 dd ϕs (mm.rad 1− ) 0.0 0.0 0.0 121 dd ϕi (rad 1− ) -0.004 -0.004 -0.004 [4] Wu Xuncheng, Mao Shimin, Wu Xutang: Chinese Journal of Mechanical Engineering， Vo1.36 （2000）, p.70 [5] Su Zhijian, Wu Xutang, Mao Shimin, et al: Journal of Xi'an Jiaotong University， Vo1.39（2005 ）, p.17 [6] Wu Xuncheng, Chen Zhiheng, Hu Ning: Chinese Journal of Mechanical Engineering， Vo1.41 （2005）, p.97 [7] Cao Xuemei, Fang Zongde, Zhang Jinliang, et al: Chinese Journal of Mechanical Engineering， Vo1.43（2007）, p.155 [8] Cao Xuemei, Fang Zongde, Xu Hao, et al: Chinese Journal of Mechanical Engineering， Vo1.44 （2008）
, p.209 [9] Wu Xuncheng, Li Cong, Zhang Ruoping, et al: Advanced Materials Research， Vo1.44-46 （2008）, p.495 [10] Zeng Tao: Design and machining of spiral bevel gears.
Press of Harbin Institute of Technology （1989） [11] Wu Xuncheng, Hu Ning, Chen Zhiheng: Chinese Journal of Mechanical Engineering， Vo1.41 （2005）, p.81

Research on the Adaptive Fuzzy Control Based on Variable Universe of with Magneto–rheological Suspension DuanMin, Li Gang, ShiJing and SuHai-hua College of Automobile and Traffic Engineering, LUT, Liaoning,　Jinzhou, China duanmindm@163.com, lnitligang@126.com duanmindm@163.com Keywords-semi-active susoension; magneto–rheological damper; magnetic circuit design; variable universe fuzzy control;ride comfort Abstract—The magnetic circuit of MR damper was given,Finite Element Analysis and the structure optimization of MR damper were reserched.The theory of a variable domain by adopting an adaptive algorithm based on fuzzy-control was applied in semi-active suspension control with MR damper.The adaptive law for membership functiongs was designed for input and output.Based on 2DOF 1/4 car model with the simulationed for road protile as random input,the control simulation of MR semi-actibe suspension was carried out,results show that spring mass acceleration reduced while an adaptive algorithim
In this paper, combined with MR damper current key issues , the circuit design of MR damper is discussed depthly From the theoretical point of view and finite element analysis Based on the design principle of the magnetic circuit ,the internal magnetic field distribution in the shock absorber is studyed using the finite element method to simulate the electromagnetic field .The relationship between of MR damper and the control current is analyzed and the curve between them is obtained,which provides theoretical support for the MR damper control model and the semi-active suspension system[4][5].The adaptive variable universe fuzzy control system used in Controller is for the problem of the central value of membership functions as well as input and output values of the variable domain.
(2) material properties definition: the United States LORD MRF-132DG fluid, the maximum shear yield stress, dynamic viscosity coefficient Number , the relative permeability of the coil is 1
Journal of Vibration Engineering, Vol. 22 No. 5, Oct. 2009 512—518 [2] Yu Miao.
Optima l design and the simula tion ofM R v ibra tion isola tor for automotive suspen sion[J] MECHAN ICAL & ELECTR ICAL ENGINEER INGMAGAZINE, Vol. 24 No. 7,Jul. 2007.22-25 [9] Wen Sheng-ping,Zhao Guo-ping,Cai Kang-xiong.A Fuzzy-control adaptive algorithm wih variable domain [J] Control Theory and Applications, Vol. 26 No. 3,Mar. 2009 265—268

In contrast, the materials with superconducting behavior tend to exhibit perfect diamagnetism, which the total magnetic field almost close to zero.
Conductive materials were used for preparing the electrical contact measurement.
Somehow, those conductive materials have a higher conductivity than films itself.
Empirical Selection Rule of Substrate Materials for Iron Chalcogenide Superconducting Thin Films.
La, In-situ spectroscopic studies and interfacial engineering on FeSe/oxide heterostructures: Insights on the interfacial superconductivity, Chin.

Its special engineering geological properties often lead to the problem of engineering accidents and geological disasters [1].
Accordingly, the occurrence of engineering accidents and geological disasters in laterite area depend on the particularity of laterite.
Therefore, the depth study the changes of iron oxides in laterite will explains the mechanism of the occurrence of engineering accidents and geological disasters in laterite area.
That is the important role to the prevention of engineering accidents and geological disasters in laterite area especially Yunnan area.
At present, the migration of material composition especially iron oxide in laterite lack research, but the iron oxide plays a key role to the particularity of laterite, because the migration of iron oxide in laterite directly affect the connection ability of laterite particles, and then affects the structure stability of laterite.

For simulating the real behavior of the tracking system, in order to obtain more realistic results, the control system model has been developed, in the concurrent engineering concept, by using EASY5 of MSC Software.
Scarzella, Design and test of a parallel kinematic solar tracker, Advances in Mechanical Engineering 7(12) (2015) 1-16
Petuya, Design of a solar tracking parallel mechanism with low energy consumption, Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 229(3) (2015) 566-579
Barbu, Virtual prototyping tools applied in mechanical engineering, Mecatronica 3 (2004) 9-12
Krainski, Adaptive control system for drill machine, Applied Mechanics and Materials 436 (2013) 445-450

Jarfors 1, a 1 Materials & Manufacturing, School of Engineering, Jönköping University, Box 1026, 551 11 Jönköping, SWEDEN a anders.jarfors@jth.hj.se Keywords: Hot chamber die casting, magnesium alloy, AZ91D, surface roughness.
The definitions and key characteristics are shown in table 2, where Z(x) is the surface profile height with Z(x)=0 as the mean height.
Tan, Materials & Design, 31 (2010) S1-S1
Wee, Materials and Manufacturing Processes, 18 (2003) 637-641
Arunachalam, Journal of Materials Processing Technology, 180 (2006) 161–166.

Process Behavior and Application of Dynamic Self-adjusting Water-transferring composite coat Zengzhi ZHANGa and Hongmei DUb Research Institute of Ecological and Functional Materials, China University of Mining and Technology (Beijing), Beijing, China a z.zengzhi@163.com, b duhongmei001@163.com Keywords: desertification; water potential; water-release coated fiber; ecological construction.
The basic measure to the ecological environment treatment of desertification area is vegetation restoration and the key influencing factor of which is soil moisture.
This composite film is prepared by compounding water-release coated fiber and environment-friendly polymer material[12].
Journal of Functional Materials, vol38, (2007), p809
Journal of materials engineering, 7, (2008), p25.

Heavy metal separation by various nature materials of biological origin, including bacteria, fungus, yeast, algae, etc., has been reported in the literature [2-6].
However these materials is difficult to cultivate.
So a lot of polymer materials have been synthetised and applied to separate metal ions.
Acknowledgments This work is supported by the National Natural Science Foundation of China (Grant No. 21177053, 11175081), the Innovation Project of the Key Discipline in Hunan Province (12K091) and the Construct Program of Innovative Team in USC (NHCXTD07) and University of South China Innovation Foudation For Postgraduate(2012XCX09).
Tayeb, Materials Science and Engineering. 985-989 (2008), p. 28 (In Chinese) [17] L.

Factors affecting the separation of Ti-Al alloy in the TiPro process Kenneth Sichonea, Deliang Zhangb, Stiliana Raynovac Waikato Centre for Advanced Materials, School of Engineering, The University of Waikato, Private Bag 3105, Hamilton 3240.
This paper presents and discusses the results of an investigation on the influence of the key parameters on the separation of Ti-Al alloy phase from the alumina rich by-product by extrusion.
Experimental The materials used in the experiments were anatase powder of 98.5 percent purity with 0.2µm mean particle size supplied by Millennium Inorganic Chemicals, Australia and 99.5 percent pure aluminium powder with particles sizes being less than 60µm from Ecka Granules Ltd., Australia.
Feng, Combustion synthesis of advanced materials: Part I.
Progress in materials science, (1995) 39(4–5): p. 243-273