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Online since: November 2013
Authors: Liang Kang, Lian Cheng Mao
In the two-dimensional Cartesian coordinate system, there are , For two-dimensional energy equation, make the following assumptions: (1) The interface of different media is fixed, and; (2) The density of same material is constant; (3) Energy term is zero.
Journal of shanghai jiaotong university, Vol 46, pp.28-30,Sep. 2012, (In Chinese) [7] Yang Yuwang, Zhen Ya, Qiu Guangshen. 3D finite volume TVD scheme application in flow of rocket nozzle.
Journal nanjing university of science and technology,vol.19, no.5,pp.487-492, 1995 (In Chinese)
Online since: June 2014
Authors: Xiao Yu Chen, Xin Xia, Bo Liu
Studied Material The dataset of cardiotocograms (CTGs) originates from the SisPorto Project, an academic initiative aimed at the improvement of fetal heart rate (FHR) analysis and interpretation; it is downloaded at http://archive.ics.uci.edu/ml/datasets.html, and based at the Department of Obstetrics and Gynecology of the School of Medicine, and the Institute of Biomedical Engineering, University of Porto, Portugal.
Schapire: Journal of computer and system science.
Bresfelean: International Journal of Mathematics and Computers in Stimulation.
Online since: January 2012
Authors: Feng Wang, Di Zhang, Hui Xu
For the elastomeric material having the same nature in each direction, no matter which kind of the crack (I, II, III), the crack tip asymptotic field can be expressed by the basic function [5], i.e
Acknowledgements This work was financially supported by the National Natural Science Foundation of China (11002163).
International Journal for Numerical Methods in Engineering, 1999, 46: 131-150
International Journal for Numerical Methods in Engineering, 1999,45:601-620
Online since: May 2011
Authors: Yao Peng Wu
The material properties are as follows: Young’s modulus E=206GPa, Poisson’s ratio v=0.3.
Acknowledgments This work is supported by the National Natural Science Foundation under grant 50978216, the Foundation of Shaanxi Educational Committee under grant 2010JK634 and the Scientific Foundation of Xi’an University of Architecture and Technology under grant RC1001.
Escrig: International Journal of Space Structures Vol. 11 (1996), p. 257 [2] H.
Ariel: Journal of the International Association for Shell and Spatial Structures Vol. 45 (2004), p. 190 [3] D.A.
Online since: May 2014
Authors: Bao Jin Feng, Xin Guan, Rui Guo
The dynamic stiffness can better meet the amplitude frequency characteristic of rubber material at high frequency by introducing a damping unit.
Master’s thesis of Jilin Univsity, 2013.7 [2] YU Zengliang, ZHANG Lijun, YU Zhuoping: Journal of Mechanical Engineering. 2010. 7, p. 116-121 [3] LIU Wei, A study on multi-objective optimization and bus performance affected by suspension rubber bushing, Ph.D.
Journal of Rail and Rapid Transit, 1997, 211(2):95-108 [5] SHANGGUAN Wen-bin, JIANG Cuicui, WU Jie: The ninth vibration theory and application of academic conferences, 2007.10(5): 77-80 [6] GUO Konghui: Science and Technology Press of Jiangsu. 2011.2:76-80 [7] GUO Konghui, six component model of non-steady state tire for analysis of automobile full loaddynamics, State Key Laboratory of automobile dynamic simulation.1997.4 [8] Harris J, Stevenson A: Rubber Chemistry and Technology. 1995, 69: 15-47.
Online since: September 2011
Authors: Hui Qin Zhang
Introduction One-dimensional nanostructured materials with a variety of forms, such as nanotubes, nanowires, nanobelts, and nanofibers, are of great interest due to their unique properties and intriguing applications in many fields.
Among various methods to prepare these materials, electrospinning is currently one of the most versatile and promising processes for producing continuous nanofibers for both fundamental and application-oriented research mainly due to its capability and feasibility in generating large quantities of nanofibers with well-defined surface topologies at relatively low cost [1-3].
Fig. 2 XRD patterns of the PAN/PANI-DBSA composite nanofibers with different PANI-DBSA contents (a) 0 wt% (pure PLA fiber), (b) 100 wt%, (c) 2.5 wt%, (d) 5 wt%, (e) 10 wt%, (f) 15% The crystalline properties of electrospun fibers are important when the materials are designed and fabricated for commercial applications.
Gorelova: Journal of Appled Polymer Science Vol.80(2001), p.626
Online since: March 2013
Authors: Wen Li Wang
Crystal growth KBBF material used in this study was obtained by a chemical reaction between KBF4 and BeO.
The chemically pure materials of KBF4 and BeO were purchased from Shanghai Chem.
The material was further purified by the vacuum distillation for several times before starting the crystal growth experiments.
References [1] J.Q.Wei,J.Y.Wang,G.Y.Liu, et al.: Journal of Synthetic Crystals,Vol.24(1995),p291
[6] W.L.Wang, K.S.Wang and W.Wang: Advanced Materials Research, Vol.284-286(2011),p2315.
Online since: July 2014
Authors: K. Elaiyaraja, Periyasamy P
High current flows between gripping jaw and anvil; the material between anvil and jaw is heated and enters the plastic condition.
Under the action of the pressure of the upsetting cylinder the heated material is upset.
Contrarily, if the forming temperature too low or the forming velocity is too high, the material folds.
If neck length is high, material flow will not happen in the forging process due to spherical bulb shape.
REFERENCES [1] ASM Metals Handbook Volume 14 – Metal forming and forging [2] Handbook for forging and stamping Technology 1988 [3]Y sun, T Liu, Z Zhang, T Zhang and T Luo Optimum control of process parameters in electrical upsetting, proceedings of the Institution of Mechanical Engineers; 2003; 217, 9; proquest science Journals [4] Y.G.Wang, X.M.Yin, Analysis of parameter and microcomputer control for the electric upsetting process for forging engine valves J.Master, shaping Technology. (1987) [5] ZHANG Zheng_rong1, SUN You_song1, XIAO Xiao_ting1, LI Cai_fang1, LUO Tian_you2, ZHANG Tao2, Theoretic Analysis of the Finish-Forging Process of the Engine Valve
Online since: December 2003
Authors: B. Rajchel, J. Marciniak, W. Chrzanowski, G. Nawrat, J. Zak
Journal Citation (to be inserted by the publisher ) Copyright by Trans Tech Publications Structure Modification of Surface Layers of Ti6Al4V ELI Implants J.
Materials and methods Ti6Al4V ELI was used in the research.
Simpson: Electrochemical behavior of titanium and titanium alloys with respect to their use as surgical implant materials.
Sinnott: The growth and modification of materials via ion-surface processing Surface Science Vol. 500 (2002), p. 500-522.
Online since: October 2011
Authors: Jie Sun, Guo Chao Li, Yong He
Introduction The solid carbide end mills are generally used in dustry for high speed and hard-cutting materials machining.They are charactized by a complex geometry with many geometry parameters,which deals with some complicated process in machining with grinding CNC machine.In order to save the design and manufacturing time ,the prediction of the end mill geometry is needed[1].
Acknowledgement It is a project supported by the Chinese National Programs for High Technology Research and Development (No.2009AA044303) and the Important National Science & Technology Specific Projects (No.2009ZX04012-032-01).
[3] Jenn-Yih Chen:Journal of Materials Processing Techonology.Vol.201(2008),p.618-622
[6] Yong-Hyun Kim:Materials Processing Technology Vol.130-131(2002),p.653-661.