Numerical Simulation And Quality Control Of Offshore Wind Tower Rolling Process

With the rise of the wind power industry to promote the development of wind power equipment.Offshore wind power is gradually developing from offshore to offshore,The demand for the size of wind turbines is increasing.The domestic conventional plate coiling machine can’t meet the needs of wind power industry effectively.It is significant to improve the coiling quality of wind power towers for improving manufacturing efficiency and reducing production cost.At present,the research on offshore wind power tower drum winder is still in its infancy.Most of them lay particular emphasis on the structural analysis of the plate coiling machine and the analysis of the small tubular section.In this paper,the marine wind power tower drum reel as an example,in reference to a large number of scholars on the basis of production practice,This paper mainly discusses the factors that influence the rolling accuracy of offshore wind power towers.The details are as follows:Firstly,the geometrical parameters and material parameters are used to model the special plate winder for offshore wind power tower.Based on the bending theory of sheet metal,the relationship between the reduction of upper roll,the center distance of lower roll and the forming radius is analyzed.Secondly,the simulation models of cylinder and cone are established by using the display dynamics analysis of ABAQUS software and the geometric model and the process flow of plate rolling.The material model,meshing,boundary condition,analysis step and load setting in the rolling model of cylinder and cone cylinder are introduced respectively.Finally,the process parameters affecting the forming quality,such as upper roll down pressure,lower roll speed,lower roll deflection and friction coefficient,are compared and simulated.The optimum process parameters are determined,which provides a theoretical basis for improving the quality of the offshore wind power tower barrel.