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And Q235 is the material we mainly used for the main frame.
Because of the premise of finite element analysis, we tried to simplify the geometric model of the main frames and took Q235 as the main material to obtain the main structure characteristics .The physical parameters of material Q235 is shown in Table 2.
The Physical Parameters of Material Q235 Project Value Yield Point 235 MPa Young's Modulus 212 GPa Poisson's Ratio 0.288 Density 7860 kg/m3 Dynamic Analysis Because the structure of main frame was very complex, we should simplify the structure first.
Journal of Northeastern University (Natural Science), 29(7) (2008), p.p. 1045-1048.

According to material mechanics and elastic-plastic mechanics, the piston lip expands to the external and the clearance will be diminished if the force acts on the internal surface is greater than the external surface.
Fig. 2 Forces acting on the unit Fig. 3 The resultant force The approximate differential equation of deflection curve is a linear function of bending moment while the bending deformation is very tiny and the material obeys Hooke's law.
Oertel, etal: Prandtl's Essentials of Fluid Mechanics (Science Press, Beijing 2011) [2] Y.Q.
Meng: Mechanics of Materials (China Machine Press, Beijing 2004) [3] K.
Mani: Journal of Computational and Applied Mathematics, Vol. 230 (2009) No.2, 803

Acknowledgment: This work was realized within the frame of the Operational Program ERDF: “Research Center of advanced materials and technologies for current and future applications - PROMATECH”, project code ITMS: 26220220186 and also partly supported by APVV agency grant No.
Doiron, A., Revie, R.W.: Industry survey on techniques to monitor internal corrosion, In: Materials Performance, 51 (2), pp. 34-38 [3] Halama, M., Kreislova, K., Lysebettens, J.
V.: Prediction of Atmospheric Corrosion of Carbon Steel Using Artificial Neural Network Model in Local Geographical Regions, In: Corrosion: The Journal of Science and Engineering, Vol. 67, no. 6 (2011), p. 1-6, ISSN 0010-9312 [4] Halama, M., Zhu Y., Kovaľ, K., Brezinová, J.: Quantification of corrosion activity on HDG steel sheets during cyclic dip tests in classical and ecological salt solutions, In: Acta Metallurgica Slovaca, Vol. 20 (2014) pp. 89-96 [5] Mabbut, S., Mills, D.J., Woodcock, C.P.: Developments of the electrochemical noise method for more practical assessment of anti-corrosion coatings, In: Progress in Organic Coatings, Vol. 59 (2007)

Aluminum-silicon alloys with high strength, the most important aluminum alloys, were ideal engineering materials [1].
Experimental set-up The cutting force experiments were carried out in dry turning aluminum-silicon alloy ZL702, which the measuring schematic diagram was given in Fig. 1, under following conditions: 1) Cutting machine: common lathe C620-1, which can realize continuously variable speed with inverter. 2) Experimental instrument: turning dynamometer CLY, dynamic strain gauge DYB-5, data acquisition system WS-U60116, electronic balance: DZC-1, computer and so on. 3) Workpiece: ZL702 bar, solution-treated and aged (T6), the physical properties and chemical composition were shown in table 1 and 2. 4) Tool materials: cemented carbide tool YG8. 5) Tool geometrical features: rake angle, clearance angle=8°, major cutting edge angle= 45°, minor cutting edge angle = 45°, cutting edge inclination angle = 0°. 6) Cutting parameters: cutting speed: v = 100, 141 and 200 m/min, feed rate: f = 0.08, 0.13 and 0.2 mm/r, depth of cut: ap = 0.2, 0.45 and 1 mm.
References [1]Zhang Jianhua, Shang Zihe: Journal of Shandong University (engineering science).

Wu2, Z Li1 1 College of Materials Science and Engineering, Nanjing University of Technology, 5 Xinmofan Road, 21009, Nanjing, China. powderfang@163.com 2 Foshan City Modena Machinery CO,.LTD.
Improvement and Advancement of an Axial Type Separator of Coarse Pulverized Coal[J] Journal of Engineering for Thermal Energy and Power,2001,11(16): 661~663
MD dynamic separator in coal preparation system[J] Henan Building Materials, 2004(3):P25~41; [5] Wei Huanhai.

Materials and Methods Experiment methods and designs.
Acknowledgements This work was supported by the National Natural Science Foundation of China (No.50879025).
Voutsa: Journal of Hazardous Materials, Vol.166 (2009), p. 1250 [7] Q.

Hu: Materials Science Forum, Vol. 532-533(2006), pp. 404
Xie: Chinese Journal of Spectroscopy Laboratory, Vol. 1(2001), pp. 78
Hu: Key Engineering Materials, Vol. 304(2005), pp. 214.

The concrete strength grade for Fuyang river aqueduct is C40, foundation includes soft soil layer and bedrock layer, material properties of which shows in the table 1.
Table 1 Material properties for calculation model of Fuyang river aqueduct Material for calculation model Density(kg/m3) Elastic modulus(GPa) Fuyang river aqueduct structure 2500 32.5 Soft soil layer 1800 0.5 Bedrock layer 2600 50 Material for calculation model poisson's ratio Damping ratio Fuyang river aqueduct structure 0.2 0.05[2] Soft soil layer 0.35 0.05 Bedrock layer 0.25 0.05[3] Element Selection.
Journal of Building Structures, 2009(5): 102-107
Sichuan Building Science, 2005(4): 88-90

Occurrence Analysis of Cracking Concrete Floor Caused by Alkali- Aggregate Reaction Xiqing Bai1,2,a,Tiecheng Wang1,3,b, Pengyu Zhang2, Da Yan2, Tong Liu2 1School of Civil Engineering, Tianjin University, Tianjin 300072, China； 2 Tianjin Building Materials Academy, Tianjin 300381, China; 3Key Laboratory of Coast Civil Structure Safety(Tianjin University), Ministry of Education, Tianjin 300072, China abaixq@163.com, bwangtiechengtj@126.com Key words: Alkali- aggregate reaction; concrete; floor; crack Abstract: In order to find the reason of concrete cracking in some construction.
Experiments Materials.
[2] Su Feng-lian , Wang Ping, Shao Jing, Zhao Shuang-xi, Review on Concrete Alkali-aggregate Reaction Issues and Its Prevention Measures, Journal of North China Institute of Water Conservancy and Hydroelectric Power, 2002, 23(04): 22-25
[5] Sun Bin, Wang Jingxian, Zhou Yan, Di Xiaoyun, Identification Methods for damages Due to Freeze-Thaw Sulfate Attack and Alkali-aggregate Reactions, Building Science, 2011, 27(S1): 29-33

Tong: Materials Science and Engineering A Vol.499 (2009) No.1-2, p.230-233
Tang: Key Engineering Materials Vols.375-376 (2008), p.445-448
[7] H.Guo, D.W.Zuo, Y.W.Liu: Journal of Jilin University(Engineering and Technology Edition)  Vol.37 (2008) No.1, p.84-88.