Vibration analysis and effect of internal Stiffener on the structural response of Steel wind turbine tower

Islam, Md. Mirazul; Al Saeed, Abdullah

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dc.contributor.author	Islam, Md. Mirazul
dc.contributor.author	Al Saeed, Abdullah
dc.date.accessioned	2017-11-24T09:19:30Z
dc.date.available	2017-11-24T09:19:30Z
dc.date.issued	2016-11-20
dc.identifier.citation	[1] H. M. Negm and K. Y. Maalawi, "Structural design optimization of wind turbine towers," composite and structure, pp. 649-666, 2000. [2] N. Bazeos, G. D. Hatzigeorgion, I. D. Hondros, H. Karamaneas, D. L. Karabalis and D. E. Beskos, "Static, seismic, stability analyses of a prototype wind turbine steel tower," Engineering Structure, pp. 1015-1025, 2002. [3] L. Zheng-Quan, C. Sheng-jun, M. Hao and F. Tao, "Design defect of wind turbine operating in typhoon activity zone," Engineering Failure Analysis , pp. 165-172, 2013. [4] C. Dimopoulos and C. Gantes, "Comparison of stiffening types of the cutout in tubular wind turbine towers," Constructional Steel Research , pp. 62-74, 2013. [5] D. Lemak and J. Studnicka, "Influence of Ring Stiffeners on a Stell Cylindrical Shell," 2005. [6] P. Murtagh, B. Basu and B. B.M., "Simple models for natural frequencies and mode shapes of towers supporting utilities," Computers and Structures, pp. 1745-1750, 2004. [7] WC Jiang, QS Fan and J. Gong, "Optimization of welding joint between tower and bottom flanges based on residual stress considerations in a wind turbine," Energy, pp. 461-467, 2010. 38 [8] J. Chou and T. WT, "Failure analysis and risk management of a collapsed large wind turbine tower," Engineering Failure Analysis, pp. 295-313, 2011. [9] K. Lee and H. Bang, "A study on the prediction of lateral buckling load for wind turbine tower structure," Int J Precision Eng Manuf, pp. 13: 1829-36, 2012. [10] F. Pena, P. Lourenco, N. Mendes and D. Oliveira, "Numerical models for the seismic assesment of an old masonry tower," Eng Struc, vol. 32, pp. 270-282, 2010. [11] Y. Hu, C. Baniotopoulus and J. Yang, "Effect of internal stiffening rings and wall thickness on the structural response of steel wind turbine towers," pp. 148-161, 81 (2014). [12] E. 1991-01-04, "Actions on structures, CEN, Brussels," 1991.	en_US
dc.identifier.uri	http://hdl.handle.net/123456789/166
dc.description	Supervised by Prof. Dr. Md. Zahid Hossain Professor Department of Mechanical and Chemical Engineering (MCE) Islamic University of Technology (IUT) Board Bazar, Gazipur.	en_US
dc.description.abstract	In this paper, the structural response of steel tubular wind turbine towers with various design configuration is analyzed using FEM modeling. 50m tower with 3 different design option as follows: i) tower without stiffener, ii) tower with horizontal stiffening ring, iii) tower with vertical stiffener. The model of the towers are designed in SolidWorks. Von- Mises stress and total deflection of the tower are analyzed to identify more efficient design approach adopting internal stiffeners. Here we analyzed the mode shapes, natural frequencies and harmonic response of von-mises stress and total deflection by using ANSYS Workbench 14.5. The studied model ignored the mass of nacelle-rotor system and the wind turbines, namely, only the isolated tower was included. Actually we validate an existing paper where tower without stiffening ring and with stiffening ring are analyzed and here another design option has been analyzed in which vertical stiffeners are used instead of stiffener ring. Finally best design option will be selected based on strength of the tower and vibration analysis	en_US
dc.language.iso	en	en_US
dc.publisher	IUT, MCE	en_US
dc.title	Vibration analysis and effect of internal Stiffener on the structural response of Steel wind turbine tower	en_US
dc.type	Thesis	en_US