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Because model scale is 3:40, the similarity constant of material bulk density is 40/3.
That is the model material bulk density should be 12.333 times bigger than the prototype material.
A Model Test on Long-span X-style Tied Arch Bridge on Railway[J].China Railway Science, 2003,23(1):88-93 in Chinese [5] Liu Zhaofeng, Shi Fanghua, Zhao Renda, Yang Yongqing, Wang Xiaoyang.
[J] China Civil Engineering Journal,2010,43(2):72-78 [7] Huang Hai-xin, Zhang Yin, Liu Bo, Zhu Wei-zhi.
Journal of Railway Engineering Society,2010,1:33-37 [8] Liu Zhaofeng, Dai Xianrong, Zhao Renda, Yang Yongqing, Wang Xiaoyang.

The existence of the stiffeners effectively improves the out-of-plane instability of the node plate, and the CHS materials can be fully used.
Journal of civil engineering and environmental engineering.
Beijing: science press, 2000
Journal of Structural Engineering, 2007, 125(10): 1100-1108
Clem: submitted to Journal of Materials Research (2003) [6] Li Zixiang.

Material and methods Experimental apparatus and material.
Chiang, The Chemical and Biological Characteristics of coke-oven Wastewater by Ozonation, Journal of Hazardous Materials, vol. 156, 2008, pp. 560–567
[4] Laisheng Li, Wanpeng Zhu and Pengyi Zhang, TiO2/UV/O3-BAC Processes for Removing Refractory and Hazardous Pollutants in Raw Water, Journal of Hazardous Materials vol. 128, 2006, pp. 145–149
Jin, Effect of Ozone Treatment on Ammonia Removal of Activated Carbons, Journal of Colloid and Interface Science vol. 286, 2005, pp. 417–419
[8] Hong Liu, Beizhen Xie and Anjie Li, Theory and Technology on Water purification with Biological Activated Carbon, Science Press, Beijing, 2007, pp. 58-59

FEM Analysis of Hydraulic Dismantling Feasibility on Shaft-sleeve Interference Fits Jian Shen1, a, Shulin Rao1, b, Guangfu Liu2, c, Dan Zhou2 and Xiaodong Du3 1School of Mechanical and Automotive Engineering, Hefei University of Technology, Hefei, China 2Institude of Green Design and Manufacturing Engineering, Hefei University of Technology, Hefei, China 3School of Materials Science and Engineering, Hefei University of Technology, Hefei, China ashenjian56@vip.sina.com, braoshulin1988@163.com, cgfliu@hfut.edu.cn Keywords: Finite element method; Contact analysis; Interference fit; Orthogonal test; Dismantling Abstract.
Contact theory The contact analysis of shaft-sleeve interference fits is a three-dimensional multi-body elastic-plastic contact problem, which is about the uncertainty of contact mechanical status on the surface. [2] Due to the unknown contact areas, friction phenomenon, the infinite number of possible sliding directions of three-dimensional contact problem, and the elastic-plastic deformation caused by the nonlinear properties of materials therefore it is a highly nonlinear problem. [3] According to the principle of virtual work, when the system composed of two contiguous elastic bodies is in equilibrium, the discrete balance equation can be created.
The material of shaft and sleeve is set for structural steel from the material library, and the computational model is 3D model.
[2] Xianxin Cai, Yueping Chu: An efficient method for stress analysis of integrated impellers, Journal of Mechanical Strength, 1997, 19 (3): 21～23(In Chinese) [3] Aihua Liao, Hongwu Zhang, Changhua Wu: Contact analysis for interference fit of vane machinery, Journal of Mechanical Strength, 2006, 28(2):282-286(In Chinese)
International Journal of Mechanical Sciences, 2000, Volume 42 (Issue 9) :Pages 1835-1850

Materials and methods Materials.
[3] In Chinese Daojiang Chen, Zhengsheng Ma: Guangxi Textile Science, 2006,35(1):43-47
[4] In Chinese Jianhua Qian, Fu Sun, Ronggen Ling: Journal of Textile Research, 2007,28(4):16-18
[5] Sang Young Yeo etc: Journal of Materials Science,2003,V38:2143-2147
[7] In Chinese Xinzhao Huang, Zhongyi Zhang, Xiaodong Zhang: Journal of Qingdao University, 2008,23(1):21-24.

Introduction Hydropress is one of the basis machinery in the material processing industry[1].
The material of die is K403, and the forming temperature is 940℃, at which the elastic modular of die is 148000MPa.
Wanheim: Journal of Materials Processing Technology Vol. 105 (2000), p.246 [4] H.
Balendra: Journal of Materials Processing Technology Vol .87 (1999), p.28 [5] S.F.
Lin: Chinese Journal of Mechanical Engineering Vol. 44 (2008), p.308 (in Chinese) [8] L.

Keywords: SO2 fumigation, Quality, SO2 residue, Red grape Abstract: Taking Red Grape as material, studied on the effect of SO2 interval fumigation treatments on postharvest quality and SO2 residue of fruit stored under 0 °C.
Materials and methods Materials.
Grapes were harvested freshly from grape science and technology park on August 24st in Tianjin province, China and were immediately transferred to the laboratory within 2 hours.
Acknowledgements This study was supported by National High Technology Research and Development Program 863 (No. 2012AA101703) and the Natural Science Foundation of Tianjin 12JCZDJC23400 References [1] A.K.
Zhang: Journal of Fruit Science, Vol.28 (2011), p. 685.

In fibre cementitious materials, the contribution of fibres is mostly apparent in the post-peak tensile region.
Journal of Bridge Engineering, Vol. 13(2008), pp.602-610 [2] Lok T.
Flexural strength assessment of steel fibre reinforced concrete, Journal of Materials in Civil engineering,Vol. 11, N. 3(1999), pp. 188-196 [3] Alena, K., Kristek, V., and Broukalova, I..
Material Model of FRC - Inverse Analysis.
Variable Engagement Model for the Design of Fibre Reinforced Concrete Structures. 2003 ECI Conference on Advance Materials for Construction of Bridges, Buildings and Other Structures- III, Davos/Switzerland, (2003),pp. 1-10

The swelling of the Fe-Cu materials sintered at the temperatures above the copper melting point during sintering has been studied for many years [14-16].
Powder metallurgy science. 2nd ed.
Engineering materials and their applications.
Journal of applied physics 74.2: 955-962, 1993
Structural and Thermodynamic Factors of Suppressed Interdiffusion Kinetics in Multicomponent High-entropy Materials, Phys.

Introduction CH3NH3PbI3 is a material of organic-inorganic hybrid perovskites.
In many organic materials, it is usual to analyze the optical absorption at the fundamental edge in terms of band-to-band transitions theory [11].
Acknowledgements This work was supported by Funding for the development project of Beijing Municipal Education Commission of science and technology (Grant No.KZ201410005008), Natural Science Foundation of Beijing City (No.4102014), and China Postdoctoral Science Foundation (No.2015M570020).
Perovskite solar cells keep on surging, Science, 344(2014) 458 [4] Kagan C R, Mitzi D B, Dimitrakopoulos C D.
Organic-inorganic hybrid materials as semiconducting channels in thin-film field-effect transistors, Science, 286(1999) 945–947 [5] Heo J H, Im S H, Noh J H, et al.