Research On Simulation And Optimization Design And Damage Prediction Of Offshore Wind Power Tower Under Penetrating Sensing Mode

With the development of economy,the increase of energy demand,together with30 years of Carbon Peak,60 years of carbon neutrality,the proportion of new energy is bound to become more and more important.As a new energy industry with early start and relatively mature technology,the increase of single-unit generation capacity not only increases the production capacity of wind turbines,it can also increase the proportion of the new energy industry in the 14 th five-year plan,which promotes the increase of tower height,thus bringing about the renewal of material and performance research.In view of this,this topic aims at the present situation that the single steel material and the concrete material already can not satisfy the fan tower development demand,takes the concrete material as the tower bottom,takes the steel material as the tower body,the proportion of concrete segment and steel segment was studied,and a control test was carried out to seek the best proportion from the direction of economy and performance.Firstly,the finite element method is used to construct different scale wind power tower models,and the life prediction is used as the evaluation index to complete the mixed scale study.The wind and wave loads on the tower are calculated,and a thorough sensing model is introduced to monitor and analyze the key points and all forces on the tower in real time.Secondly,using Solidworks 3D modeling software to carry out a comprehensive and three-dimensional modeling of the wind power tower,on the basis of the completion of the existing wind power tower in the middle and far seas,and then 120 meters high tower modeling,the assembly function is used to change the material and structure composition of the tower,and then the material data of the wind power tower is calculated.Thirdly,we associate Solidworks with ANSYS Workbench software,and import Solidworks model into ANSYS Workbench for simulation.In particular,the wind and wave loads are applied to the tower,and the stress and deformation of the tower are analyzed to obtain the stress bearing range of the tower under the wind load simulation.Due to the inevitable damage of wind power tower during operation,the existing fatigue formula is modified to complete the fatigue analysis of wind power steel-concrete tower,the damage and service life of the tower can be predicted,which provides the corresponding theoretical data and basis for the tower design optimization.Finally,in order to improve the strength performance,stability and durability of the tower,this paper proposes a modular design of prestressed steel tube-concrete tower.The design scheme assembles the pylon,taking into account the convenience of transportation,but also reduces the amount of work,improve the economic benefits.In this paper,stress analysis,deformation analysis and damage prediction of the optimized model are carried out.Compared with a single tower,the optimized model can bear larger load and have longer life,the results show that the fatigue analysis and life prediction of the tower obtained in this paper can promote the development of the wind power tower.