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By controlling the deformations of the rotor blade using smart materials induced strains, the geometry of the rotor blade can be changed, or by deflecting on-blade control surfaces, the aerodynamic loads can be modified.
So far, in the vast majority research on the use of smart material actuators for active blade deformation, the smart materials are limited to piezoelectric materials [2-3].
Progress in Aerospace Sciences Vol.42 (2006), p. 285-330
Sympo. on Smart Structures and Materials (2000)
International Journal of Solids and Structures Vol. 38 (2001), p. 1765-1789

But arch curve bending moment is smaller, and this gives full play to the mechanical properties of the materials[4].
Each cross section in bent structure must bear the load and weight itself, and variable cross-section can make full use of the materials in actual engineering.
Materials parameters are as follows
The side wall of tank has no obvious damaged, so the corresponding poles of truss structure can become much thinner or can increase the distance between the poles, which can reduce the modeling materials.
South-to-North Water Transfers and Water Science & Technology, 2007, 5(3), p:14-17.

Due to the significant content of non-metallic inclusions and technical oils in metal wastes, they cannot be used as secondary raw materials without preliminary processing.
Frolova, Peculiarities of the technological process of devices for grinding ferromagnetic materials on the base of the magneto-vibrational layer, Materials of the international scientific symposium of engineering technologists "Knowledge intensive and vibrowave technologies of detail processing of s of hi-tech products, Rostov-on-Don (2016), 26p
Ignatenko, Basic state of dipole system in flat rectangular center net, Journal of Experimental and Theoretical Physics, Vol. 68, №3, рр. 889-893 (1985) [5] B.E.
Instability and disasters in science and technology, M.: Mir, 254 p. (1985) [9] Y.M.
Simulation of destruction of ferromagnetic materials particles in magneto-vibrational layer, World Science Proceedings of articles the international scientific conference, рр. 59-70 (2017) [10] Y.M.

Preparation of HSLWAC with Activity Mineral Admixtures (1) Materials ①Cement: Portland cement.
Such action can increase the quantity of gelled materials and improve their qualities, so that strength of cement could be improved if suitable activity mineral admixtures are mixed.
(In Chinese) [2] Changjun Ke, Keshuan Ma, Jingjie Yang, Xiang Dong: Civil Engineering Materials (Science Press, China 2010).
Tests and properties of concrete and concrete-making materials.
Journal of Nanjing Forestry University (Natural Sciences Edition), Vol. 34, September 2010, p. 91-95.

Hunderi2 1 Department of Materials Technology and Electrochemistry, Norwegian University of Science and Technology, N-7491 Trondheim, Norway 2 Department of Physics, Norwegian University of Science and Technology, N-7491 Trondheim, Norway Keywords: normal grain growth, computer simulation, grain growth kinetics, topology.
According to Lücke et al [6] the dimensionless growth rate can be written as Journal Title and Volume Number (to be inserted by the publisher) 3 2 0 1 2 2 r r dr d r ω ω ω τ + + = (3) Eq. 3 has three parameters: ω0, ω1, and ω2.
Journal Title and Volume Number (to be inserted by the publisher) 5 In the 1D case, Hunderi and Ryum demonstrated that it is sufficient to describe the effect of the environment on the growth rate of one particular grain size class by a function which depends on the mean neighbor grain size only.

Testing analysis on rock fatigue life due to affecting factors under uniaxial compression REN Jian-xia, ZHANG Yin-heb, LI Qing-yuanc , Zhang Kund School of Architecture and Civil Engineering,Xi’an University of Science and Technology, Xi’an 710054,China aRenjianxi1968@163.com , bzhangyinhe013@sohu.com,c lqywy@hotmail.com,dzhangkun0833@163.com Key words: rock,uniaxial compression,fatigue life,cyclic loading,affecting factors Abstract: Using the rock mechanics multi-function testing machine named RMT150B, the testing study on rock fatigue life due to different affecting factors under uniaxial compression condition are accomplished.
Test equipments and test methods This test is accomplished on the rock mechanics multi-function test machine---RMT150B manufactured by the Institute of Rock Mechanics in Chinese Academy of Science.
The deformation of the specimens consists of two parts: elastic deformation and plastic deformation, that is If (1) So (2) For a closed path, (3) So (4) Missing materials are defined as follows (5) For this kind of condition it can get cyclic plastic strain energy (6) So each cycle of strain energy is directly related to stress amplitude.The bigger stress is, the greater the area of each loop, the more the energy for the extension is, the shorter fatigue life will be.
Acknowledgement Specialized Research Fund for the Doctoral Program of Higher Education (NO.20096121110004) References [1] Ge Xiurun, Ren Jianxi, Pu Yibin, Ma Wei, ZhuYuanlin etc Rock fatigue mesoscopic damage evolution properties of CT analysis [J]Journal of Geotechnical Engineering 2001,23(2):191～195 [2] Ge Xiurun, JiangYu, LuYun, Ren Jianxi,the experimental research of therock fatigue deformation characteristics under the cycle load ,Rock mechanics and engineering journal2003,22(10):1581～1585 [3] JiangYu, Ge Xiurun,Ren Jianxi,The deformation laws and acoustic emission characteristics during the destruction process of rock fatigue [J],Rock mechanics and engineering journal2004,23(11):1810～1814 [4] C E Fairhurst,J A Hudson．Uniaxial compression test determing rock stress_straining curves ISRM The recommended draft[J],Rock mechanics and engineering journal 2000,19（6）：802～808

Materials and methods Study site The study was carried out at the barren hillsides in the arid valley of the upper reach of the Minjiang River that runs mainly from north to south.
Journal of Fujian Forestry Science and Technology, 2004, 31(2):123-127(In Chinese)
Chinese Journal of Ecology,1992,11(2):35,44-49(In Chinese)
Journalof Southwest China Normal University(Natural Science), 2002,27(2):215-218(In Chinese)

Data analysis: firstly compare the materials from different sources and modify the inside and outside data on the basis of the data from the interview, so as to raise the data validity.
Acknowledgments This study is supported by Zhejiang Provincial Philosophy and Social Science Foundation of China(Grant No.08CGGL004Z) and Soft Science Research Program of Hangzhou (Grant No. 20091334M18).
Strategic Management Journal, 1997, 18(5): 375-405 [2] Ravichandran, T.& Lertwongsatien, C.
Journal of Management Information Systems, 2005, 21(4):237-276 [3] Wade, M.& Hulland, J.

Research on Nonlinear Dynamic Characteristics of Fluid-conveying Pipes System Yu Hou1,a and Guohua Zeng 1College of Mechanical Automation, Wuhan University of Science and Technology, Wuhan, China afly_houyu@163.com Keywords: fluid-conveying pipes; nonlinear dynamics; modal analysis; system responses Abstract.
The fluid was room temperature water, and the pipe material was rolled copper.
Acknowledgements This paper was supported by Natural Science Foundation of Hubei Province of China (2010CDB03406).
Joohong: Journal of Vibration and Acoustics.
Fan: Journal of Fluids and Structures.

The angle steel is used as auxiliary materials of tower head and leg sections.
Acknowledgments This research is supported by the Natural Science Foundation of Hebei Province (E2013502291), the Science and technology Research Project for Colleges and Universities in Hebei Province (Z2011229) and the Fundamental Research Funds for the Central Universities (10MG17).
Journal of Vibration and Shock.
China Civil Engineering Journal.