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Table 1 Overhead contact line parameters Name Parameter Name Parameter Span [m] 50 contact wire material CuMg contact wire height [m] 5.3 contact wire cross-section[mm2] 150 Encumbrance [m] 1.6 contact wire tension [kN] 27 stagger [mm] ±300 catenary material BzⅡ dropper material BzⅡ catenary cross-section [mm2] 120 dropper cross-section [mm2] 10 catenary tension [kN] 21 To reduce the non-uniformity of contact wire elasticity, this paper has increased the spaces of dropper 0-1 and dropper 6-0 and reduced the spaces of dropper 3-4 on the basis of the existing model 1.
Journal of Vibration and Acoustics. 135-5 (2013), p. 051021
International Journal of Mechanical Sciences.52 (2010), p. 1471-1490

Recently, synthesis technology of ultra-fine nano-structured materials can be attained by utilizing ultrasonic radiation because it is able to provide high frequency clean energy to prevent the agglomeration [4].
The shift could be due to increase of the surface area possibly resulting from the size decrease of material.
Acknowledgments This work has partially been supported by the National Nanotechnology Center (NANOTEC), NSTDA, Ministry of Science and Technology, Thailand, through its program of Center of Excellence Network.
Yixin, Grain Growth Kinetics of SnO2 nanocrystals Synthesized by Precipitation Method, Journal of Wuhan University of Technology-Mater, Sci.Ed. (2010) 929-934
Sedghi, Synthesis of SnO2 nanopowders by a sol-gel process using proponol-isopropanol mixture, Central European Journal of Chemistry, 6(4), (2008)651-656.

Introduction Uniform Droplet Spray (UDS) process was first proposed by Yim at 1996, in which molten metal droplets are ejected through the nozzle to the inert gas environment by applying the static pressure on the bulk liquid material in the generator, and then deposit onto a movable substrate to fabricate 3-D prototypes [1].
It is reported that UDS rapid prototyping has been used in biomedicine, micro-structure and graded materials fabrication, and repair of spaceflight structures.
Acknowledgements This work was supported by a grant from the National Natural Science Foundation of China under grant numbers 50975286 and 50735006, and by National Key Laboratory for Remanufacturing Grant Nos. 9140C85020210OC8505 and 9140C85020511OC85.
Nichols: Journal of Computational Physics Vol.39 (1981), p. 201 [5] R.
Zemach: Journal of Computational Physics Vol.100 (1992), p. 335 [7] Y.

In addition, each of the methods is usually preceded by the stage of mechanical preparation of the raw materials, where the techno-genic waste is crushed.
The modern technologies and equipment make it possible to recover useful metals and minerals partially or fully from the technogenic raw materials.
Materials and Methods The dump nickel slags from the Rezhsky, Ufaleysky and South Ural metallurgical plants were used in present study.
Semenov, East European Journal of Advanced Technology ¬ Eastern-European Journal of Enterprise Technologies. 2008.
Sciences - St.

At present it has been already used in coal, oil, metallurgical, aviation, construction, transportation, chemical, machinery, building materials, municipal engineering, military, water conservancy, light industry and other departments.
Brazil disc Rock fracture toughness of rock material is used to characterize rock material's ability to resist crack propagation [2],the test has two problems, namely, the prefabricated crack and critical crack length of rock specimen are difficult to measure, so we can not simply copy the shape and testing specifications of metal specimen, we must adopt a new specimen.
In 1995 the international society of rock mechanics (ISRM) proposed a new test pieces which can be used in testing tensile strength of brittle material, namely the herringbone groove Brazil disc specimens ( cracked chevron notched Brazilian disc, CCNBD ), this specimen was gradually applied to the research of rock fracture toughness of brittle materials.
At the same time, Brazil disc has developed into a straight cut groove or a herringbone groove specimen from no groove. in accordance with the different notch shape, can be divided into straight grooving Brazil disk (cracked straight through Brazil disc, CSTBD), herringbone groove Brazil disk (cracked chevron notched Brazil disc, CCNBD) and hole groove type Brazil disk ( holed cracked Brazilian disc, HCBD ) [3].Brazil disk is used to test the tensile strength of brittle materials indirectly, which rely on radial compression initially.
Wang and L.Z: Chinese Journal of Geotechnical Engineering, Vol.26 (2004) No.1, P.15 (In Chinese)

Finite Element Analysis of Hydraulic Clipping Machine Shear Platform Dased on ANSYS Hailin Wang1, Yihua Sun*1,a, Mingbo Li2, Gao Lin2, Yunqi Feng2,Shili Wu1, Caihua Huang1 and Jian Chen1 1College of Materials and Chemical Engineering, Collaborative Innovation Center for Energy Equipment of Three Gorges Region, China Three Gorges University, Yichang 443002, China 2 Hubei LiDi Machine Tool Co., LTD.
The material of clipping machine’s shear platform was steel Q235.
Lai: Mechanical Science and Technology for Aerospace Engineering Vol. 12 (2008), p. 1602 [2] X.C.
Mohamed: Journal of Low Frequency Noise Vibration and Active Control Vol. 2 (1999), p. 63 [7] Y.C.
Underwood: Progress in Structural Engineering and Materials Vol. 3 (1998), p. 351 [8] Information on http://www.Simwe.com/ [9] Q.

These technologies continue to advance in parallel with developments in materials, computers and sensors.
The consolidation within the corporate reality of these concepts, e.g. high-speed machining or high performance machining, among others, has been possible thanks to advances in knowledge of the process and the constant innovations in materials, coatings, mechanical and computer science.
Fundamentals of modern manufacturing : materials, processes, and systems. 2nd ed.
Materials and Manufacturing Processes, 25 (6), 386–398. 2010
Journal of Mechanical Science and Technology 25 (11) , pp. 2877-2886. 2011.

Materials The development of the new chassis was motivated by the idea that locally positioned supporting cores can prevent buckling of the thin-walled sections and thus help to exploit the high yield stress of a high-strength steel.
The linear elastic material parameters are summarized in Table 3.
Winter, Mechanical Behavior of a Cellular Composite under Quasi-Static, Static and Cyclic Compression Loading, Journal of Materials Science 47 (2012) 5635-5645
Kuhn, Lightweight Potential of Novel Cellular Spherical Composites, Advanced Engineering Materials 7/12 (2005) 1117-1124
Wierzbicki, Effect of an ultralight metal filler on the bending collapse behavior of thin-walled prismatic columns, International Journal of Mechanical Sciences 41 (1999) 995-1019

For metallic materials under large deformation and high strain ratio, the J-C constitutive relation and fracture criterion of Johnson and Cook are known to be suitable [8].
But the epoxy cannot resist the bullet’s penetration directly as its low materials strength.
Ordance material science and engineering. 2008;31(4):79-82
Journal of materials Processing Technology, 2009, 36: 948-964 [11] Goncalves D P, Demelo F C L,Klein A N.et al.
International Journal of Machine Tools&Manufacture. 2004,44:307~316;

Materials and Methods 2.1 Feedstock preparation The raw material used in this study was WC (supplied by Eurotungstene.com) and Co powder (supplied by Inframat Advanced Materials, LLC).
The working principle is to measure the viscosity resistance when melted materials pass through the die orifice.
Grigorescu, International Journal of Refractory Metals and Hard Materials, Volume 19, Issues 4-6, Pages 235-568 (2001)
[8] Karatas, C., Kocer, A., Unal, H.I., Saritas, S., Journal of Materials Processing Technology, vol.152, pp 77-83, (2004)
[9] Khakbiz, M., simchi, A., Bagheri, R., Materials Science and Engineering a., vol 407, pp 105-113. (2005)