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Online since: March 2011
Authors: Li Li
The Kinetic Parameter Calculations of the Shift Pairs about the Tripod Universal Joint Li Li 1,2 1Shandong Provincial Key Laboratory Of Polymer Material Advanced Manufactorings Technology 2College of Electromechanical Engineering, Qingdao University of Science & Technology,69 Songling Road, Qingdao, R.P.
References [1] L.Li,D.G.Chang: submitted to Journal of Qingdao Institute of Chemical Technology (2001) [2] D.G.Chang :submitted to Journal of Beijing University of Aeronautics and Astronautics (1993) [3] Q.X.
Online since: March 2012
Authors: Yun Jun Gou, Xiao Hui Zhong
Figure 7 The temperature distribution comparison of cylinder wall Figure 8 The air velocity distribution comparison near cylinder wall Conclusion A jet cooling system is designed for micro Wankel engines in laboratory environment according to the starting and ending location of hot arc zone of micro-air-cooling Wankel engine, and the heat transfer on the cylinder of engine is simulated with FLUENT, The cooling effect has been significantly improved by jet cooling system, and at this time the temperature of cylinder wall is about 370K to 470K which can meet the temperature requirements of the engine material.
Acknowledgment This work is supported by Hebei Province Natural Science Foundation Project (No.
ASME Journal of Engineering for Gas Turbines and Power. 2003, 125(7):709~719 [3] Joachim Luther, Gunther Stollwerck, Matthias Zenker, et al.
ASME Journal of Engineering for Gas Turbines and Power. 2003,125(7):709~719
Online since: February 2014
Authors: Ze Sheng Zhu, Ling Sun
An Equal Sustainable Area Model for Harvesting Eichhornia crassipes in Environmental Phytoremediation Ling Sun1, a, Zesheng Zhu2, b 1JiangSu Academy of Agricultural Sciences, Nanjing, 210014, China 2Naval Command College, Nanjing, 210016, China alingsun60@gmail.com, bzesheng.zhu@gmail.com Keywords: Equal sustainable area model; Harvesting Eichhornia crassipes; Environmental phytoremediation Abstract.
Material and Methods The water pollution of Taihu Lake is characterized by the severity of eutrophication and high frequency of algae bloom.
Journal of environmental management, 2010, 91(12): pp.2626-2631
Sen, et al., Biohydrogen and biomethane from water hyacinth (Eichhornia crassipes) fermentation: Effects of substrate concentration and incubation temperature [J]. international journal of hydrogen energy, 2011, 36, pp.14195-14203
Online since: April 2012
Authors: Xing Wei Tang, Chun Li Mo, Shou Peng Du
48″600lb full-welded ball valve ultimate bearing capacity optimal design Chunli Mo 1, a, Shoupeng Du 2,b , Xingwei Tang 3,c 1,2,3Department of Material Science and Engineering, University of Shenyang Aerospace, Shenyang, China aclmo@sau.edu.cn, bdusp0601@126.com, cpowertang@163.com Keywords: Fully-welded ball valve; Stress linearization; Strength estimation Abstract.
A computational procedure for calculating primary stress for the ASME B&PV code [J].Journal of Pressure Vessel Technology, 116(1994)339-344
ASME Task Group Report on Primary Stress [J].Journal of Pressure Vessel Technology, 119 (1997) 61-67
Online since: February 2012
Authors: Fu Li, Xiao Ming Yang
Table 1 Reinforced concrete simple beam’s parameters Material elastic modulus (MPa) tensile strength (MPa) nominal value of axial compressive strength (MPa) nominal value of axial tensile strength (MPa) Poisson's ratio erect steel rods 2.0×105 200 —— —— 0.3 hoop 2.0×105 200 —— —— 0.3 longitudinal steel rods 2.0×105 350 —— —— 0.3 concrete 2.55×104 —— 13.4 1.54 0.2 Fig 1 The finite element model Fig 2 Steel rods element model of beam of reinforced concrete beam Seismic data and exerting mean Load exerted in this article is seismic waves making use of Tianjin wave’s first five seconds’ x, y, z directional acceleration [5], set fifty load steps in calculation, got into ANSYS program through compiling computational program, which complete seismic simulation.
Acknowledgements This work was financially supported by the Science Research Project of Inner Mongolia University of Technology (ZD200903).
Journal of Vibration Engineering(1997).
(In Chinese) [5] Xianguo Ye.Journal of Civil Engineering(2008).
Online since: October 2014
Authors: Li Li
Through the establishment of the characteristic database of the library, can effectively collect and collate information, promote the information systematization and professional, thereby optimize the cyber source, and satisfy the user’s information needs. 2 The problems on library characteristic database construction At present, although some institutions and units pay more attention on the library characteristic database construction, and characteristic database construction has also been progress and formed some scale, but some problems still exist, need to be further solved. 2.1 The construction of database lack of contact and coordination Information service institutions involved in the construction of the characteristic database consists of three groups: the first is the major colleges and universities library, the second is national public library, and the third is science and technology system.
In the process of research and production of a database, cannot do without the workers hard work and wisdom, cannot do without the relevant agencies and staff of human, material and financial resources, and technology investment, so it should be protected for its creativity and the subject of intellectual property rights.
Journal of university library, 2011 (1): 54-57
National Library Subject Characteristic Database Construction in University Library Journal, 2011 (1): 53-55,68
Online since: February 2013
Authors: He Sheng Zhang, Hong Hong Li, Guo Dong Li
The comparative analysis of Probability integration and Numerical Simulation in Surface subsidence prediction Guodong Li1,a Hesheng Zhang1,b Honghong Li1,c 1Surveying and Mapping Science and Technology Department, College of mining engineering , Taiyuan University of Technology, Taiyuan, Shanxi,030024,China aliguodongliang@163.com, b zhsgis@126.com (corresponding author), c13485369435@163.com, Keywords: mining subsidence; surface movement; Probability integration; Numerical Simulation Abstract.
movement Numerical Simulation is a simulation to the reality, whether the simulation results be able to estimated the reality and predict the future accurately largely depends on the selection of the rock mechanics parameters, so after mine coal seam roof strata sampleconventional mechanical tests, to draw various the rock formations physical mechanics parameters(is shown in table 3) Table 3 Physical mechanics parameter of rock number Rock name density (g/m3) Tensile strength (Mpa) Uniaxial compressive strength (Mpa) Modulus of deformation (Gpa) Poisson ratio Bulk modulus (Gpa) Shear modulus (Gpa) 1 limestone 2.71 4.0 102.4 5.95 0.22 3.54 2.44 2 shale 2.16 0.9 15.9 0.72 0.22 2.12 33.2 3 coal 1.34 0.4 5.8 0.21 0.32 0.19 0.08 4 carbonaceous 2.52 1.1 64.2 1.54 0.13 0.69 0.68 5 sandstone 2.61 2.6 70.4 1.95 0.14 0.9 0.86 6 Calcareous shale 2.72 2.1 107.1 4.86 0.18 2.53 2.06 The simulation results in addition to rock mechanics parameters, and also has a great relationship with the material
Nesarajah,Fractal model for flow through saturated soils,Journal of Geotechnical and Geoenvironmental Engng. 1998,124(1):53~66 [2] P.H.S.W.Kulatilake,J.Um,G.Pan,Requirements for accurate estimation of fractal parameters fro self-affine roughness profiles using the line scaling method,Rock Mech.Rock Engng. 1997,30(4): 181~206 [3] M.
Kamath,An efficient boundary integral formulation for flow through fractured porous media,Journal of Computational Physics. 1998(143):462~483 [4] Chao Shan,Iraj Javandel,Paul A.
Online since: September 2014
Authors: Xue Qing Tang, Pei Cheng Wu, Shou Cai Ma
However, due to the adding story are made of a variety of light body material, the mass and stiffness of the overall structure have a mutation in the adding layer.
Acknowledgements This work was financially supported by the the science and technology projects of Housing and construction department of Gansu province in 2012 -- - “Design research of strengthening and seismic on the light steel storey adding structure, which based on concrete structure”(project number JK2012-17).
Whiplash effect" of high-rise building vibrations.Journal of Vibration and Shock, No.2, (1985)
Myklestad, The Concept of Complex Damping, Journal of Applied Mechanics, Vol.19, No.3, (1952)
Online since: September 2011
Authors: Chao Lu, Fu Wang, Guo Ming Zhu, Yong Lin Kang, Ren Dong Liu, Li Lin
LTD., Anshan 114001, China 3School of Materials Science and Engineering, USTB, Beijing 100083, China aag_lrd@126.com, bzhuguoming@ustb.edu.cn Keywords: Transformation induced plasticity (TRIP), High strength low alloy (HSLA), U-beam, simulation, stamping, collision Abstract.
The forming and collision performances of two materials TRIP 780 and HSLA 340 steel sheets are compared.
Materials Properties The chemical composition of TRIP 780 is shown in Table 1.
The cross sections of two materials after springback are shown in Fig. 9.
Langseth: International Journal of Impact Engineering Vol. 39 (2009), p. 12.
Online since: March 2012
Authors: Piotr Kula, Robert Pietrasik, Konrad Dybowski, Emilia Wołowiec, Leszek Klimek
Trzaska: J. of Materials Processing Technology 155-156 (2004), pp. 1950
Norrish: J. of Materials Processing Technology 170 (2005), pp. 536
Dept of Computer Science (1988)
Dybowski: Journal of Materials Processing Technology, 164-165 (2005), pp. 876
Sha: Computational Materials Science 28 (2003), pp. 179