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Static and Dynamic Characteristic Analysis of the tower for Vertical Axis Wind Turbine Based on Finite Element Method Gong Yanjue 1, a, Zhang Yuanyuan2, b, Zhao Fu1, c,Xiang Huiyu1, d, Meng Chunling1, e, Zhang Yuan1, f 1School of Material and Mechanical Engineering, Beijing Technology and Business University, China 2China Ship Research and Development Academy ayjgong@th.btbu.edu.cn, b542907131@qq.com, czhaoffu@163.com, dXianghy@th.btbu.edu.cn, emengcl@th.btbu.edu.cn, fzhangyuan1965@126.com Keywords: vertical axis wind turbine; tower; finite element method Abstract.
The material is high strength dilute alloy steel Q345, the elastic modulus is 2.1E+11N/m^2, the poisson ratio is 0.3, the density is 7850kg/m^3 and the yield strength is 3.51E+8Pa.
For the most basic problem involving a linear elastic material which obeys Hooke’s Law, the matrix equations take the form of a dynamic three dimensional spring mass system.
References [1] Zhao Rongzhen, Lv Gang, Static Analysis of the Tower for Horizontal Wind Turbine Based on Finite Element Method, Wind Turbine Technology, Vol.4 (2009), P.42-44 [2] Jin Xin, Du Jing, He Yulin, Application of Simulation in Analysis of Performance of Wind Turbine, Journal of System Simulation, Vol.12 (2007), P.2823-2830
[3] Xiangxin Liu: Basic and Application of ANSYS, Science Publishing, China (2006)

The basic idea is to replace the conventional cylindrical pipe by a textured pipe of the same material, diameter and wall-thickness.
Von-Mises elastoplastic material definition (Table 1) with isotropic hardening is used.
Bilinear material model (Table 1) using von-Mises plasticity with isotropic hardening is adopted.
International Journal of Mechanical Sciences, 2013. 68(0): p. 224-235

Analysis of the Adhesive-bonded Joint Stress in a MW Segmented Assembly Wind Turbine Blade Liu Lang 1,a, Li Gongyu 1,b , Sun Jie 1,c and Liu Qingbo 1,d 1Faculty of Mechanical and Electrical Engineering,Kunming University of Science andTechnology，Kunming 650093, China aliulanghn@gmail.com, blgy0203@sina.com, cjs5861975@126.com, dlqbxiaoyaofei@foxmail.com Keywords: adhesive-bonded joint stress; tress analysis; finite element method; glue line interface.
The blade material is FRP and the adhesive of the joint is epoxy resin, and the related stiffness of them has order of magnitude difference.
The material properties of the FRP and the foam core are anisotropic.
[3] Luo Yifeng, World Wind Energy and its blade material development overview and trends, Hi-Tech Fiber & Application, 2003，28-5
[11] LiLong,HuPing,LiuLizhong,Strength of Unsymmetric Single—lap Adhesively Bonded Joints, Journal of Agricultural Machinery,2011,42-1

Acknowledgment This research is financially supported by the National Science Foundation of China under grant No. 51075126.
A Fuzzy Multicriteria Decision –Making Method for Material Selection.
Journal of Manufacturing Systems,1996,15(1):1-12 [2] T.
Key Engineering Materials, v 455, p 575-579, 2011 [5] Zhanqi Hu, Wu Zhao.

Material and Method Culture Medium Slant medium：PDA medium Seed medium：glucose 60g/L，Bran 8g/L ，(NH4)2SO4 10g/L，KH2PO4 5g/L，MgSO4 1g/L Fermentation medium：Malt extract powder 18g/L，Yeast extract 3.22g/L，KH2PO4 Experimental method Seed preparation : Cultured 4d slant tube at 28 ˚C was rinsed with sterile water, preparing spore suspensions of 10-8cfu/mL, 250mL Erlenmeyer flask by inoculation access 2% with 100mL seed liquid , culturing at 28 ˚C, 200r/min for 48 h Fermentation conditions : 250mL Shake bottle with fermentation medium 50mL, according to the inoculation amount 10%, 28 ˚C, 200r/min shaking culture 5d, the initial pH natural.
Acknowledgements This work was financially supported by National Natural Science Foundation of China (21076114).
Journal of Agricultural and Food Chemistry Vol. 44 (1996) , p. 2336
Takeo: Phytochemistry Vol. 120 (1981), p. 2145 [5] C.Zhang, R.Huang, H.Tian: Applied Mechanics and Materials Vol.419 (2013), p.328 [6] S.Jung, S.

While, piezoelectric materials are not routinely supported in the fabrication processes offered by commercial MEMS foundries.
Where is the lateral displacement, is the lateral force per unit length of the beam, is the mass density of the beam, is the cross-sectional area of the beam, is the Young’s modulus of the material, is the moment of inertia of the cross-section, is shearing force, and is the moment of force.
Acknowledgment The authors would like to gratefully acknowledge the financial supports from the National Natural Science Foundation of China under grant No. 51075249 References [1] W.C.
Journal of Micromechanic and Microengineering, vol. 10(2010), p. 1-9

Radiation-Induced Graft Polymerization of Maleic Anhydride onto Poly-ββββ -Hydroxybutyrate Herong Ye, Dongzhi Yang, Ping Hu*, Fengbo Zhang and Qinglei Qi Institute of Polymer Science and Engineering, Department of Chemical Engineering, Tsinghua University, Beijing, China yhr02@mails.tsinghua.edu.cn Keywords: Poly-β-hydroxybutyrate, Maleic anhydride, Radiation grafting, Thermostability Abstract: This paper focuses on an effective way to improve the thermostability of poly-β-hydroxybutyrate (PHB).
However, it must be noted that PHB is a somewhat stiff and brittle material, readily subject to thermal decomposition.
Advantages of radiation grafting include no requirement of a catalyst or an initiator, polymeric material forms at room temperature, superior suitability for high purity biomaterial production and an easily manageable reaction.
Experimental Material.
Hu: Polymer Journal. 33(2001),P647-653

Simple hot embossing technique was utilized for micropump construction with PMMA material which appear to be good rapid prototype technique to be further integrated in disposable biomedical application due to its low cost, bio-compatibly and chemical inert properties.
Jung, High-rate sputtering of thick PZT thin films for MEMS, Journal of Electroceramics 25 (2010) 198-202 [3] H.
Qiu, Characterization and MEMS application of low temperature TiNi(Cu) shape memory thin films, Materials Science and Engineering: A 438-440 (2006) 1106-1109 [4] D.

Therefore, in order to obtain self-lubrication composite material, increasing the film thickness becomes one of the research focuses [8].
References [1] Yanchun Zhao, Miao Chen, Preparation and self-lubrication treatment of ordered porous anodic alumina film, Materials Chemistry and Physics82 (2003) 370-374
Amin, Growth kinetics, composition and morphological structure of porous and barrier-type anodic alumina films, Journal of Applied Electrochemistry 32: 1257� 1264, 2002
Fukuda, Ordered metal nanohole arrays made by a two-step replication of honeycomb structure of anodic alumina, Science 268 (1995) 466-1468.�

The kinetic energy of small particles has been found to dissipate within the substrate material in the form of elastic energy (Hutchings, 1977), and AE can, in principle, be used to characterize such strain energy because it is generated by rapid release of strain energy within a material.
Part of the energy radiates from the source in the form of elastic waves which propagate over the material surface and can be detected using AE sensors.
The test was devised to observe whether or not a clear signal could be recorded while the substrate material is being coated, and whether this signal is distinguishable from that associated with the continuous background noise.
M. (1977), "Strain Effects in Microparticle Impact", Journal of Physics D: Applied Physics, Vol. 10, pp. 179-184 Lugscheider, E., Ladru, F., Crostack, H.
Materials 4, pp. 623-631 Pawlowski, L. (1995), The Science and Engineering of Thermal Spray Coating, John Wiley & Sons Publisher, New York