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The column cross-section is 400mm×400mm×16mm, and the steel material is Q345.
The beam L-A, L-B and L-E are H-shape beam and the steel material is Q345.
(a) Skeleton curve of concrete (b) Skeleton curve of steel Fig. 4 The stress-strain curve of material The model for the nonlinear viscous damper is shown in Eq. (1).
Acknowledgements Project supported by the National Natural Science Foundation of China (NO.51008113) and Central fund for scientific research business.
[5] Zhihua Huang, Xilin Lu , Ying Zhou and Yi Bo: JOURNAL OF TONGJI UNIVERSITY (NATURALSCIENCE), Vol. 38 (2010), p. 170 (In Chinese)

The engineering practice has showed that local cavity can easily occurred for the falling of caulking material of the concrete pavement, so the void of the plate joint has became the main factor in the damage of concrete pavement.
After determining the main affecting factors, the paper has detailed analysis for all the factors through ANSYS finite element, so as to determine the parameters of all the materials required to adapt the void. 3 The analysis of the main factors for the pavement deflection with void To further analyze the main factors on the concrete pavement panel deflection effect for further, the following will be a detailed analysis about the top of the base reaction modulus, coefficient of pavement, the elastic modulus of plate, dowel bar spacing factor, trying to get to meet the road surface deflection requirements which is needed by pavement and foundation-specific requirements
The influence of load stress of the airport cement concrete slab for the panel [R] Journal of Tongji University, 2010
Highway Traffic Science and Technology, 2007

As to the boiler, the explosion energy, besides a few (about 3%-15%) consumption in tearing steel plates, pulling off in-situ fragments as well as with the boiler connected steam-water pipes, valves and main body outside, the energy of consuming for further tearing the container would be little as well, and most of the explosion energy will function as the form of shock wave on the surrounding environment, causing the destruction of buildings and casualties [4]. the magnitude of the blast wave is much higher than the one caused by a vapor cloud explosion occurring in an identical quantity of material.
References [1] Center for chemical process safety of the American Institute of chemical engineers: Guidelines for Evaluating the Characteristics of Vapor Cloud Explosions Flash Fires and BLEVEs (American Institute of chemical engineers, New York 2012) [2] F.Y.Cai, Z.SH.Tan, H.Meng, etc: Chemical Safety Engineering (Science Press, Beijing 2002).
Abbasi: Journal of Hazardous Materials, Vol. 141(3) (2007), p.34-37.

Table 3 Parameters of main reducer Material Modulus of elasticity Density Poisson ratio Driving gear and driven gear 20CrMnTi E=2.07×105N/mm2 ρ=7.8×10-6Kg/mm3 μ=0.25 TRB GCr15 E=2.08×105N/mm2 ρ=7.8×10-6Kg/mm3 μ=0.3 differential shell and main reducer shell QT500-7 E=1.66×105N/mm2 ρ=9.83×10-6Kg/mm3 μ=0.26 There is relative motion between gears and different parts of bearing.
Applied Mechanics and Materials, (2012) p.38-41
[5] Niu Qiuman, Liang Song, Zhang Yimin: The dynamics simulation of the gear with geometrical eccentricity[J].Journal of Vibration, Measurement and Diagnosis,(2013.4)p.102-106
[6]Song Yalin, Xiong Guoquan: Fundaments of mechanical design[M].HuaZhong University of Science ＆ Technology Press,（2008.2）p.316-318

Study on the Thermal Properties of High-strength Flame Resistant Vinylon Blending Fabric Zhang Shuo1,a, Chen Xuwei1,b, Li Yuling1,c, Du weiping2 1Kay Lab of Textile Science & Technology, Ministry of Education, Donghua University, Shanghai, China,201620 2The technology center of Shangtex, Shanghai, China,200336 a2100029@mail.dhu.edu.cn, bcxw@dhu.edu.cn, clylu@dhu.edu.cn Keywords: high-strength flame resistant , Vinylon fibers, thermal conductivity, heat resistance.
Material 1.1 Yarn The high-strength flame resistant Vinylon fiber, flame retardant viscose fiber and aramid fiber were blended into a high-strength flame resistant Vinylon blending yarns, with the blending ratio 25/25/50.
Thermal conductivity of sample The thermal conductivity coefficient means the energy transfer rate in the thermal diffusion process of the material.
The formula of thermal conductivity coefficient is as follow: (1) -- Thermal conductivity coefficient of the material[W/(˚C•m2)] -- Unit time heat energy through the fabric.
References [1] SHI MeiWu, The structure and Properties of High Tenacity PVA Fibers[J], China fiber inspection, 2011(4):76-77 [2] SHI MeiWu, The application of high-strength flame resistant vinylon research[A], The 11th functional textiles, nano technology application and low carbon textile conference[C],Beijing: Beijing textile engineering academy, 2011:101 [3] Law of the people's Republic of China electric power industry standard, Performance requirements of personal arc protective equipment[S], DL/T 320-2010 [4] The people's Republic of China National Standard, Textile-Testing method for warmth retention property[S], GB/T 11048-1989 [5] Zhang Kangzhen, Study on the preparation and thermal properties of polyphenylene sulfide fabric[J],Technical Textiles, 2011(2):13 [6] The people's Republic of China National Standard, Protective clothing for firefighters[S], GA 10-2002 [7] ZHU Zheng-fen, Study on Properties of the Fire—retardant Viscose Fiber[J], JOURNAL OF ZHONGYUAN UNIVERSITY

The aeronautic industries always have been a source and driving force for the development of new materials and material compounds.
In forming analyses a too high shear load/weight ratio is the most frequent case for failure of sandwich materials.
Some defect can appear in sandwich materials, with and without reinforcement.
Fleck, International Journal of Mechanical Sciences, 46 (4) (2004), p.585608
Palkowski., Materials and Manufacturing Processes, (24) 2009, 1-5.

Numerical Simulation for the Damping Effect of Empty Holes on Blasting Vibration BIAN Kaifang1, a, LI Haibo1,b and LIU Yaqun1,c 1 Institute of Rock and Soil Mechanics, The Chinese Academy of Sciences, Wuhan China ajunlintianxiabian@163.com, bhbli@whrsm.ac.cn, cyqliu@whrsm.ac.cn Keywords: Empty holes; Damping effect; Blasting vibration; Influencing factors Abstract.The two-dimensional discrete element program (UDEC) is applied to simulate the dampi- ng effect of empty holes on blasting vibration.
Physico-mechanical parameters of rock material are shown in table 1.
Table 1 Properties of rock material Property Value Density[kg/m3] 2606 Young’s Modulus[GPa] 52.77 Poisson’s Ratio 0.28 Cohesion[MPa] 26.83 Friction angle[] 43.37 Fig.1 Numerical model Two stages are involved in the UDEC modeling: (a) static modeling to determine the pre-existing stress in the rock mass before the explosion, and, (b) dynamic modeling to investigate the rock mass response due to the explosion [7].
Furthermore, the damping empty holes can be filled with vibration-absorptive material to have better damping effect in practical engineering.
Zhou, UDEC modeling of a field explosion test, International Journal of Blasting and Fragmentation. 4(2000) 149–163

In order to differentiate out with the electromechanical coupling coefficient of material, the electromechanical coupling coefficient to call the compound structure is effective electromechanical coupling coefficient, keff , ( index eff shows the effective ) .
This work was supported by Natural Science Foundation Committee of China (60172008).
Li Denghua, Xia Song, Finite Element Analysis on Cymbal Piezocomposite Transducer, Journal of Functional Materials and Devices, Vol.8 (2002).p.155～160

Establishment of Index System Influencing Cleaning Quality In this article, from the perspective of 5M1E (Man, Machine, Material, Method, Measure and Environment), by using AHP [4] to establish hierarchical and ordered structure method, the index system influencing cleaning quality is established.
Formula of chemical cleaning liquid is chosen by component of scale and metal material.
Through investigation, chemical cleaning liquid is only chosen by metal material in this factory.
Science and Technology Management Research, 2007, 27(10): 97-99 [4] Ling Qi, Xianchao Wang, Xianghui Du.
Journal of Henan Mechanical and Electrical Engineering College, 2009, 17(3): 33-35 [5] Chunyan Shao, Tang De-shan.

Basic Principle of Electrical Discharge Machining EDM is a manufacturing process whereby a piece with desired shape, size, and surface is obtained using electrical discharges.[2] Material is removed from the workpiece by a series of rapidly recurring current discharges between two electrodes (one is called tool-electrode while the other is called workpiece-electrode).
Figure 3 Machining Size of the Micro Thin-walled Miniature Impeller 3.3 Results and Analysis 3.3.1 Machining Accuracy and Quality Experiments parameters are shown as follows: Voltage 100V Pulse Width 10μs Pulse Current 4A Electrode Material Hard Alloy Electrode Diameter 0.4mm Dielectric Discharge Oil Material of Work Piece Aluminum Alloy The experiment processing method is layered manufacturing, the piece is milled in 10 layers while the machining depth is 0.1mm.
Journal of Manufacturing Science and Engineering,2004, 126: 727～731 5.