| China is rich in wind energy resources.With the support of national policies and the maturity of relevant technologies,the safe and stable operation of wind turbines is the focus of current research,high-strength bolts,as the main connecting part of the wind turbine,are the important supporting structure of the whole wind turbine.In this paper,the static strength and fatigue life of the high-strength bolts are analyzed with the whole tower tube of the wind turbine as the research object,and its production design and installation of construction optimization,improve the feasibility of wind power generation,effectiveness and economy.The main research contents of this thesis include:(1)The finite element method of ANSYS Workbench is used to establish the integral model of the Fan Tower Tube,to analyze whether the strength of the high-strength bolt meets the design requirements of the fan parts,to solve the problem of simplifying the stress of the high-strength Bolt in the existing research,and to pass the strength check,verify the reliability and accuracy of the whole finite element analysis.(2)The S-N curve is obtained by fatigue test,and the fatigue strength is corrected after considering various factors.Then,the load-time curve is obtained,and the average stress is modified based on Goodman curve.The fatigue life of high strength bolt is calculated by ANSYS Workbench software.(3)Putting forward reasonable design optimization opinions,appropriately reducing the number of high-strength bolts and increasing the pre-tightening force of bolts within the range of tightening moment under the premise of meeting the actual engineering requirements,it can reduce the production cost and energy consumption of the fan parts,and provide the theoretical basis for the design and installation of the wind turbine. |
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