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Static and Dynamic Finite Element Analysis of Large Wind Turbine Tower

Author: CuiYang
Tutor: BaoWenBoï¼›XuJinHua
School: Shenyang University of Technology
Course: Structural Engineering
Keywords: Tower Finite Element Static strength Earthquake time history analysis
CLC: TM315
Type: Master's thesis
Year: 2011
Downloads: 88
Quote: 0
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Abstract


The support means of the tower is a wind power generator , it generators and the ground connection of the wind turbine to obtain a sufficient height . Over the years , the domestic and no uniform standard of wind turbine tower design , the only reference to foreign design experience . But with the wind turbine tower increasingly large-scale structure of the more in-depth study is necessary , and thus lay the foundation for our own design procedures and standards . 3 MW wind turbine tower , the tower of strength and stability of the static analysis using finite element analysis software ANSYS analysis of dynamic characteristics of earthquake . Static strength analysis to determine the tower at the rated wind speed , cut -out wind speed , maximum wind speed conditions of anti- stress and displacement , which cut out the stress of the wind conditions and the maximum displacement , maximum stress occurs at the bottom of the tower . Study the steady state of the tower structure , the tower in gravity and three wind load case buckling analysis , has been buckling modes and modes of the tower , tower above conditions The next meet the stability requirements . Dynamic characteristics analysis to determine the dynamic characteristics of the tower of the natural frequencies and mode shapes , etc. , calculations show that the frequency of the tower to meet the wind turbine structure design principles ; addition, analysis of the change of the tower top quality and change the tower wall of thick natural frequency . Time , were a tower in a variety of earthquake and seismic and wind conditions coupling analysis to determine the tower in the distribution of stresses and displacements corresponding earthquake conditions , get tower deformation under the combined effect of the the El Centro rare earthquake , and the cut-out speed and displacement . Static paper -based means of kinetic theory and finite element and with reference to the prevailing norms and technical standards , a variety of operating conditions of a 3 MW wind turbine tower , buckling and dynamic analysis of large wind turbine tower independent design of the frame , providing a useful reference .

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CLC: > Industrial Technology > Electrotechnical > Motor > Generators, large the generator group ( Zonglun,) > Wind turbines
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