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Table 1 Calculating parameters Item Slabs beam Joints & Deck pavements Longitudinal prestress steel wirs Transverse prestress steel wirs Materials C50 grade concrete C40 grade concrete Element types solid65 solid65 link8 - Tension Control stress (kN) - - 195 156 Density（kN/m3） 25.51 25.51 78 - Poisson's ratio 0.16 0.16 - - Initial strain - - 0.006132 - Elastic modulus (MPa) 3.45×104 3.25×104 1.95×105 - During construction, concrete bridge pavement was renewed and the hinge joints were repaired to make sure the concrete joints were solid around 0.3m high from the bottom of the slab beam bridge.
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Acknowledgements This paper is supported by National Natural Science Foundation of China (No. 51176206), National Science and Technology Support Program (No. 2014BAA01B01), National high technology research and development program (863 Program) project (No. 2013AA050503).
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Numerical Investigation of Flow past a Backward-facing Step Using a Multi-scale Turbulence Model He Dong1,*, Zhiqiang Li1, Ge Gao1, Zhong Shi1, Jian Guo2, Wendong Tang3 1National Key Laboratory of Science and Technology on Aero-Engine Aero-thermodynamics, School of Energy and Power Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China 2Beijing Institute of Aeronautical Materials, Aviation Industry Corporation of China, Beijing 100095, China 3Department of Mechanical and Electrical Engineering, Northwestern Polytechnical University Ming De College, Xi’an 710124, China *Corresponding author.
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For example, a student’s English proficiency is only suitable for learning grammar pointsin the teaching materials; the learning grammar points of teaching schedule is , even if the student can remember the grammar points, he could not apply this knowledge points into his knowledge.
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In terms of stable and reproducible characteristics, the most promising memristor materials used to create artificial intelligence systems are mixed oxides of transition metals.
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Materials and Methods Location of the Study Area.
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During machining takes place, temperature and pressure will arise, this will lead to hardening due to the deformation or phase change of the materials.
Thermal softening causes a decrease in strength of materials, the increase in friction angle and lower large plastic deformation [7].
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The conduction band-edge discontinuity may then be calculated as[5]: ))()(()( w c b c b v w v w c b c gc EEEEEEEE −+− −=∆∆ (5) where the superscripts b and w indicate the well and barrier materials, respectively.
In a bulk semiconductor material, an incoming light wave with photo energy ħω will be amplified or absorbed by the material.
In all the cases, intrinsic material was assumed.
Acknowledgment This work supported by the National Natural Science Foundation (Grant No. 60276033) and the project of National Key Basic Research Program (Grant No.20000683-02).
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Varying raw materials, new material, product and batch size requirements challenge todays sheet metal forming processes [17].
This will additionally allow to expand tolerances and to procure cheaper materials.
The automotive industry uses this process to produce various body parts made of different materials (see Fig. 2).
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