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Online since: July 2014
Authors: Ji Jin Liu, An Liang Li, Ming Zi Tan, Li Ping Liu
Table 1 Soil Parameter of Slope Elasticity modulus (MPa) Poisson’s ratio Density (kg/m3) Shear wave velocity(m/s) Damping ratio Soil A 70 0.3 2000 116 0.05 Soil B 200 0.3 2000 196 0.05 Soil C 600 0.3 2000 339 0.05 Soil D 1400 0.3 2000 519 0.05 Rock 6500 0.3 2500 1000 0.05 Table 2 Material Parameters of Structure Type Floor number Section size (mm x mm) Concrete’s strength grade Elasticity modulus (104N/mm2) Adjusted Density (kg/m3) Damping ratio Columns 1-4 650x650 C30 3.0 2400 0.2 Columns 5-9 550x550 C30 3.0 2400 0.2 Roof beams 9 500x250 C30 3.0 11100 0.2 Floor beams 1-8 500x250 C30 3.0 9600 0.2 Seismic Response Analysis Three bedrock waves (in Fig.2) were selected to the 45 examples for the dynamic time-history analysis.
Acknowledgment The paper was supported by Natural Science Foundation Project of Chongqing CSTC (2011BB0093).
[5] Pu Yang, Ying-min Li, Ming Lai: A New Method for Selecting Inputting Waves for Time-History Analysis, China Civil Engineering Journal 2000, 33(6):33-37(In Chinese).
Online since: November 2011
Authors: Feng Ling Li, Cheng Yan Song, Jing Jiang, Bai Qing Liu
An Ice-Detecting and Ice-Melting System of Electricity-Transmitting Lines based on ZigBee Wireless Communication Song Chengyan1, a, Liu Baiqing2, Jiang Jing3 and Li Fengling4 1,2,3,4 49 Institute China Electron Science and Technology Corporation Ha Erbin, China a e-mail:songchengyan2000@163.com Key words:ZigBee;Ice-detecting;Ice-Melting.
The anti-oxidize and anti- decay ability of unvarying elastic alloy is very strong, and it is the key material of making sensors.
Analysis and Study of the Deicing and Anti-icing for Catenary.Journal of Railway Engineering Society. 2009.8(8):93~95
Online since: November 2011
Authors: Ji Qiang Wang, Feng Xiang Wang
The conductance of the enclosure material is 1.1×106s/m.
Acknowledgment The work reported in this paper is supported by the National Nature Science Foundation of China under funds of 50437010. and supported by the Key laboratory Foundation of Liao Ning Province (2008S108).
Journal of Shenyang University of Technology, 2006, vol. 28(3), pp 258-264
Online since: May 2012
Authors: King Leung Wong, Wen Lih Chen, Yung Chin Chiu
In most industrial applications, carbon steel, with a conductivity of KA =77 W/m2-K is used as the duct material in this study.
Acknowledgment The authors would like to acknowledge the National Science Council of Taiwan, R.O.C..
Lauriat, Natural convection air-cooling of a substrate-mounted protruding heat source in a stack of parallel boards, International Journal of Heat and Fluid Flow, 28 (3), (2007), pp.469-482.
Online since: June 2004
Authors: Masahito Yoshikawa, Sadafumi Yoshida, Toshio Kamiya, Yuuki Ishida, Yasuto Hijikata, Hiroyuki Yaguchi
Yoshida 1 1 Department of Electrical and Electronic Systems Engineering, Saitama University, 255 Shimo-Okubo, Sakura-ku, Saitama-shi, Saitama 338-8570, Japan 2 National Institute of Advanced Industrial Science and Technology, Japan 3 Japan Atomic Research Institute Takasaki, Japan Keywords: photoelectron spectroscopy, pyrogenic oxidation, Ar post-oxidation annealing, oxide/SiC interface, bonding, band lineup, capacitance to voltage measurement Abstract.
dry +quench dry +POA pyro+quench pyro+POA SiC (a) dry+quench θe = 90o Journal Title and Volume Number (to be inserted by the publisher) 3 as to cancel out the difference in oxide thickness between the samples.
This suggests that the change of the interface structures by Ar POA is mainly arisen not at the oxide side but at the SiC side of the interface layer since the UPS measurement with smaller θe is more surface-sensitive in general for amorphous material.
Online since: July 2011
Authors: Yan Mei Cao, He Xia, Zheng Hui Li
One method uses contact element, in which the soil around piles is considered as a material following DP rule whose parameters are set up and adjusted by penalty function.
Journal of Vibration Engineering, 19(4), 2006: 438-445
Beijing, Science Press, 2010: 146-151
Online since: February 2011
Authors: Mamtimin Gheni, Zhi Chun Yang, A Fang Jin
It has some special advantages over the traditional grid-based numerical methods[2,3]: (1) Smoothed: it can represents the smoothed approximation nature by using the weighted average over the neighboring particles for stability; (2) Particles: the state of a system is represented by a set of particles, which possess individual material properties and move according to the governing conservation equations, it is noted that sand particles within wind-blown sand movement just act as dispersed particles, so SPH is sutable for the simulation of wind-blown sand movement; (3) Inherently Lagrangian: in which the particles represent the physical system moving in the Lagrangian frame according to the internal interactions and external force, and thus the system evolves in time.
B: Astronomical Journal.
(Springer Science + Business Media B.
Online since: November 2012
Authors: Yu Chen, Yun Bing He, Tao Wang
Chongqing University of Science & Technology, chongqing,China,401331; 2.
After shutting the well for pressure relief, the insulation sleeve of the secondary throttling needle valve of wellhead Water Jacket Furnace was removed for inspection, and the pipe outlet was found to be filled with black sand-like viscous material, as shown in Fig.3.
References [1] Hongye Jiang, Failure analysis of water jacket furnace, Journal of Southwest Petroleum Institute, Vol.5, 2005
Online since: September 2011
Authors: Yong Liang Chen, Guan Wei Zhang, G.Q. Sun
Table 2 Performance parameters No No.1 No.2 No.3 No.4 No.5 Material Q345B 35CrMo Modulation Section size[mm] φ440×8 φ377×9 φ312×12 φ245×12 φ180×25 Length[mm] 13000 13000 13000 13000 13000 Yield limit[MPa] 375 375 375 840 840 Maximum torque[kN·m] 220 220 220 220 220 Maximum axial force [kN] 121 136.07 152.46 165.2 202.44 The FTA-FMECA Analysis.
Chen: Journal of Engineering Graphics No.5 (2010), p.146 (in Chinese) [4] M.C.
Zhou: Basic Theory and Method for Mechanical Reliability (Publishing House of Science, China 2009) (in Chinese) [8] J.G.
Online since: June 2014
Authors: Waldemar Gehring Junior, Marcos Tadeu Gonçalves, Carlos Affonso, Manoel Cléber de Sampaio Alves, Fábio Henrique Antunes Vieira
Combinatorial problems are not well solved by traditional techniques of computer science.
Tangential angle 5.5 degrees Sawn logs (total) 1,295 units Gullet depth 15 mm Length of Logs (average) 3.08 m Tooth pitch 50 mm Diameter class -Logs(units) up to 210 469 Width of the saw 177.5 mm 210 - 250 802 Stretching tension 82 Kgf/cm2 over 250 24 Cutting edge material Stellite type # 1 Diameter of Logs (average) 215 mm Cutting speed 36 m/s Sawn logs (volume) 164.78 m3 Feed rate 40 m/min Tests were performed on bandsawing machine G3 during a working shift (4 hours), and Table 1 shows the total sawn timber and the diameter classes used, as well as the equipment parameters.
Jordan Journal of Mechanical and Industrial Engineering, p. 43-55
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