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Online since: March 2006
Authors: Nian Jie Ma, Ying Ming Li, Zhi Jie Zhang
The New Structure of Fibre Glass Reinforce Plastics Bolt-end MA Nian-jie1,a, LI Ying-ming 2,b ,ZHANG Zhi-jie 3,c 1 School of Resource and Safety Engineering, Beijing Campus, China University of Mining and Technology, Beijing 100083, China; Department of Resources and Materials, Henan Polytechnic University, Henan 454000, China 2 School of Resource and Safety Engineering, Beijing Campus, China University of Mining and Technology, Beijing 100083, China 3 Shiyi coal mine, Pingdingshan Coal Mine Group Corporation, Pindingshan 450000, China a,b,cliyingming_tom@tom.com Keywords: Coal Side Supporting, Bolt-end, Eccentric load, Indentation Abstract.
According to material mechanisms, the stress affecting at any point (y,z) on the cross section of the bolt: ) 1( 2 2 z Q y Q z Z y y i yY i zZ A Q I yM I zM A Q ++=++=σ (1) In above equation, A is the valid sectional area of the tail of bolt , iy and iz are the inertia radiuses for the axis Y and Z.
Study on Breaking Mechanism of Rockbolt-end Chinese Journal of Rock Mechanics and Engineering, 2003.3 [2] MA Nian-jie etc.
JOURNAL OF COAL SCIENCE&ENGINEERING. 2003.6
Online since: December 2011
Authors: Shuang Zheng, Li Gang Qu, Xiao Guang Han
The definition of 3D full-information model of Aircraft machining parts Ligang Qu1, a, Shuang Zheng1, b , Xiaoguang Han 1,c 1 Key Laboratory of Fundamental Science for National Defense of Aeronautical Digital Manufacturing Process, Shenyang Aerospace University, Shenyang, China. 110136 aquligang@126.com, bfatyy@163.com, chanxg_123@163.com Keywords: 3D Full-information Model, Aircraft Machining Parts Abstract.
After using the 3D process information model, it is needed to classified organize and manage the process information, complete reflect the product information such as geometry attribute and process attribute, in order to meet the data requirements which is needed in the manufacturing process, and guarantee coordination in the product designing. 3D process full-information model contain geometric solid model, coordinate system, dimensional tolerances, processing, engineering notes, standard references, standard parts and materials and so on [3].
Physical characteristic class properties point to a supplement to product characteristics which can not be described by geometric data set, mainly point to text explanation, such as: material, weight, parts type, quantity of the parts, design principle and function specifications of the product, etc.
Vol. (3) (2008), p. 1 [2] Hu Lu, Yuqing Fan: Journal of Engineering Graphics.
Vol. 38(23) (2009), p. 3 [4] Lihua Zhang, Yuqing Fan: Journal of Beijing University of Aeronautics and Astronautics.
Online since: May 2012
Authors: Zhao Yu Wang, Fu Rong Li, Hou Chao Sun
Obviously, if the material is isotropic and homogeneous medium, and ε1=0, ε3=0, the results of two questions is the same.
If the material is anisotropic inhomogeneous media, such as soil, the result depends on the strength parameters in each direction.
Moreover, the soil is a mixture of air, water, solid particles three-phase material, the greater uncertainty.
Li: Chinese Journal of Underground Space and Engineering Vol. 5(2009), p. 1557.
Rao: Chinese Journal of Geotechnical Engineering Vol. 32 (2010), p. 150.
Online since: August 2013
Authors: Lin Tian, Xi Yun Dai, Xiang Yun Kong
Suspend-dome Static Behavior Analysis Xiyun Dai 1a Xiangyun Kong1b Lin Tian1c 1Faculty of Civil and Architectural Engineering of Kunming University of Science and Technology, Kunming, 650500, China a email: 1319969358@qq.com, b email: 12643015@qq.com, c email: 365836405@qq.com Key words: Suspend-dome, Parameter Analysis, Static Behavior.
Monolayer spherical reticulated shell structure has a characteristic of weak out-plane stiffness, structural material strength can’t fully exert, usually the bearing capacity is controlled by stability; while cable dome is of high cost and hard to construction.
Considering the roofing material weight and part of live loads, the structure bears load at 1.6kN/m2 effecting on the joints which are hinge joints.
Journal of Building Structures, Vol.21 (2003), p.75
Journal of China Civil Engineering, Vol.45 (2005), p.34
Online since: April 2013
Authors: Qing Chun Feng, Xiu Wang
And the material property and the motion restraint are set according to the above-mentioned principle.
The motion restriction, materials density and friction are input into the virtual model of the transit unit.
Acknowledgment Funding for this research was provided by the National Science & Technology Pillar Program of China (2012BAF07B02) and the Beijing Innovation Team Program on Fruit and Vegetable Industrial System.
Journal of Northeast Agricultural University,1957,1 [9] Zhao Yongge,Xu Mingxiang,Wang Quanjiu,Shao Mingan.
Physical and chemical properties of soil bio-crust on rehabilitated grassland in hilly Loess Plateau of China,J.Chinese Journal of Applied Ecology.17(2006) 1429-1434
Online since: January 2012
Authors: Ying Ye Yu, Zhong Qing Zhang, Xiao Lian Zhao, Yu Xia
The problem relating historical deformation, such as viscoelastic material model and the time effect of inertia (dynamic problems), must use incremental method.
Considering of the load temperature, the dynamic plastic bilinear isotropic material model associated with temperature is chosen.
K=1.5 K=1.8 K=2.2 K=2.6 Fig 2 Failure process by water specific gravity overcharge method Acknowledgement This paper is supported by the doctor Foundation of Guangxi University of Technology (11Z02) , GuangXi Department of Education Foundation and the GuangXi Science Foundation (0991063).
References [1] Ren qing-wen: status quo and problems on safety analysis of high arch dam.journal of hydraulic engineering.
[2] Zhang chu-han:discrete-contact-fracture analysis of rock and concrete.Chinese journal of rock mechanics and engineering.
Online since: March 2007
Authors: Duk Lak Lee, You Hwan Lee, Jeong Seok Kwon
Introduction When manufacturing a cold-forged steel such as a bolt, the steel is normally subjected to spheroidization annealing to soften the material and increase its ductility before it is formed into final shape.
Pineau, Journal of the Iron and Steel Institute, Vol. 209, (1971) p. 891 [5] S.E.
Lee, Journal of Materials Science, Vol. 22, 1987, p. 2319
Online since: September 2013
Authors: Shi Guang Hu, Qing Jian Liu, Dong Xiang Chen, Dong Wang, Wang Tai Yong
For the sake of safety, we adopt plastic material.
The International Journal of Advanced Manufacturing Technology, 1999,15(9):649-654
Journal of Materials Processing Technology, 2005:1379-1387
Kinematics Modeling and Post-processing Method of Five-axis CNC Machine[C]. 2009 First International Workshop on Education Technology and Computer Science, 2009: 300-303.
Online since: May 2013
Authors: Zi Zhen Li, Chun Hu Li, Liang Wang, Li Juan Feng
Materials The chemical reagents used in the experiment are commercially available and are used without further purification. 2.2 Catalyst preparation and charaterization HPW/SC catalysts are synthesized by impregnation method.
Subsequently, the model oil phase is collected and analyzed for sulfur content by a WK-2D microcoulometric detector (with sulfur detection limit of 0.2 ppm). 3 Result and discussion 3.1 N2 adsorption isotherms All the nitrogen adsorption–desorption isotherms of the HPW/Sc catalysts belong to the BDDT type I classification, characteristic for microporous material.
Yang, Desulfurization of transportation fuels with zeolites under ambient conditions, Science 301 (2003) 79
Preparation of phosphate promoted Na2WO4/Al2O3 catalyst and its application for oxidative desulfurization, Journal of Industrial and Engineering Chemistry 15 (2009) 780
[7] P.Na, B.L.Zhao, L.Y.Gu, J.Liu,J.Y.Na, Deep desulfurization of model gasoline over photoirradiated titanium-pillared montmorillonite, Journal of Physics and Chemistry of Solids70 (2009) 1465
Online since: December 2012
Authors: Lan Fang Jiang, Hong Liu, Chang Guo Hu, Xian Li Chen, Zhi Jiang Lei
Its material is GPPS 2110.
Materials and Design 2007, (28):1271-1278
Journal of Mechanical Engineering 2011;47(6):27-32
Journal of Tongji University(Natural Science) 2011;39(2):287-289.