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So we can enhance the security of the tower by using material of large permissible stress on the windward side of the tower when designing.
Requirements are fulfilled because of results of studies integrated with computer science and finite element analysis for components and structures[11].
To reduce cost, subsections of a tower are made of various materials according to stress
Elsevier Science Ltd. (2002) [4] Jefferry M.Steele: Applied Finite Element Modeling.
[7] Lu Ping, Qin Huifang: Dynamic Analysis of Wind Turbine Tower on Finite Element Method.Chinese Journal of Mechanical Engineering,(2002),P53-60

Material Properties.
Acknowledgement This research was supported by Research Program (R201201035) funded by Land and Housing Institute and Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (2012-0685).
[2] Tassios TP, Moretti M, and Bezas A: ACI Journal Vol. 42(1996), p.711-720
[3] Kim SW, Park WS, Eom NY, and Yun HD: Applied Mechanics and Materials Vol. 204-208 (2012), p. 1229-1232

Figure 1.1 Film plate coupling three-dimensional model diagram Flexible membranous disc coupling material properties are shown as table 1.
Figure 3.1 The first principal stress nephogram Figure 3.2 Mises stress nephogram From The figure 3.1 and figure 3.2, it is known that In nominal working condition, The first principal stress maximum 295.342 MPa, mises stress maximum 251.601 MPa in film plate coupling, far less than film plate material allowable stress.
(2)0.8 mm film plate coupling the first principal stress and mises stress of static stress analysis have appeared on the plate, both value were 292.4 MPa and 295.2 MPa, plate and sleeve stress value are far less than material yield stress。
Acknowledgements This work was financially supported by the National Natural Science Foundation of China (Grant No.51275081 ).
Mechanics performance study and optimization design of flexible membranous disc coupling [J]，Journal of southeast university，vol.23 No.6:135-138 [4]Hengjingwu，metal flexible membranous disc coupling application of aviation [J]，CSSA 2000-PH-032:164-167.

(2) From Eq.2, roll material tension T is also influenced by unwinding speed v1 and unwinding roll radius R.
So the tension of the roll material T is mainly controlled by unwinding speed v1. 2 Mathematical model and control strategy of unreeling tension system The specific relationship between speed and tension are analyzed by Hooke's law and we can get the formula as follows： (3) Here A is sectional area of thin film.
The most important thing to adjust the motor speed n precisely is to calculate the real-time radius R of the roll material.
Tension Control System for Spin-Draw-Winder Used in Vacuum Coating[J].Chinese Journal of Vacuum Science and Technology.2011,1(31):44-49
Huazhong University of Science and Technology,2004

Study on the Parametric Optimal Design of a Different-Speed Mixer Fan Zhimin1,a，Hu Weifei2,b，Choi Dong-Hoon2,c, Xu Jun1,d 1 College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, P.
Introduction The different-speed mixer is a new type and high efficiency and all phase double horizontal shaft mixer, which has strong ability of smashing and oneself cleaning and can well resolve the problem in the high viscosity material stirring and mixing[1].
(11) Fig.5 Differential element on the screw flight Fig.6 Force analysis of the screw flight The Figure 7 shows the expansion of the screw flights on different radius, there (12) (13) Fig. 7 Expansion of the screw flights on different radii Fig.8 Mechanics analysis of material element According equation（10）～（13）, we can get the torque on the main shaft and the clean axis.
The objective function is shown in the equation (18). 2.2 design variables and constraint conditions According to the actual conditions, the design variables were identified as R, r1, n1, θ1 and λ1, the constraint conditions are: a) R, r1 (19) (20) b) the maximum speed range is, (21) Thus, the restrain condition n 1 and R is (22) c) θ1 [7] (23) d) The length h of the screw flight (24) (25) e) λ1 (26) f) n1 The mechanics analysis of material element is shown in Fig. 8.
Journal of Qingdao University of Science and Technology, 2006, NO. p. 330-332

Synthesis and characterization of polyaniline copolymer Tingxi Li, Yuhua Zhao, Qian Li, Chengqian Yuan, Quanliang Chen, Meng Wei,Susu Gao, Peng Sui, Na Kong School of Material Science and Engineering, Shandong University of Science & Technology, China,Qing Dao 266590 Email: litx@sdust.edu.cn Email: yuhuazhao2006@126.com Keywords: polyaniline, copolymer, crystallization, thermal stability Abstract.
Experiment Materials.
Li, et al: Chinese Journal of Colloid & polymer Vol. 4 (2011), p. 154.

Experimental The material used in this study was type 304-austenitic stainless steel.
The density distribution of boundary planes was obtained by use of software code designed in the Department of Materials Science and Engineering at Carnegie Mellon University.
Acknowledgement This work is sponsored by the Nature Science Foundation of China (NSFC) (Nos. 50771060 and 50974147).
Zhou: International Journal of Modern Physics B Vol.23 (2009), p.1110

Fiber Grating Sensor for Hydrogen Detection Using Neural Networks Jie Xiao1, a, Weimin Qi2, b 1 Wenhua College, Huazhong University of Science and Technology, Wuhan 430073,China 2 School of Physics & Information Engineering, Jianghan University, Wuhan 430056,China aluckycrystalxj@163.com, bqwmin@jhun.edu.cn Keywords: neural networks; fiber grating; hydrogen detection Abstract.
The addition of the Pd nanoparticle to the host material can yield significant improvement and modification in their mechanical, thermal, transport and optical properties [2].
Measurements of Science Technology, (2003), pp. 14-49
[2] Kaczmarek M, Tomita Y, Optics of nano-composite materials, Journal of Optics A: Pure Applied Optics, (2009)

This process extensively applied to cut a conductive material irrespective to their hardness and toughness, especially to complicated form and small piece of working material [1].
Experiment Design Equipment and Materials.
Singh, Effects of process parameters on output characteristics in WEDM, International Journal of Manufacturing Science and Technology, 2 (2008) 103-112
Caydas, Electrical discharge machining of titanium alloy (Ti-6Al-4V), Applied Surface Science, vol. 253 (2007) 9007-9016
Pramujati, Optimization of Surface Roughness and Recast Layer Thickness in the Wire-EDM Process of AISI D2 Tool Steel using Taguchi-Grey-Fuzzy, Applied Mechanics and Materials. 393 (2013) 21-28

Raw Materials and Mix Proportions.
Building Materials and Decoration, 2017 (24): 2.
Construction and Building Materials, 2019, 195: 638-649
Construction and Building Materials, 2012, 36: 216-227
Frontiers in Materials, 2021, 8: 769579