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基于数值模拟技术,运用热力学和动力学理论建立了风力机法兰塔筒焊接件熔池的数学模型;并运用ANSYS进行了热-应力耦合和热-结构耦合分析。通过分析法兰焊接时发生角变形的原因,根据风力机法兰和塔筒的焊接技术要求,在法兰塔筒连接制造过程中,采用预留焊接反变形量的方法改进风力机法兰和塔筒的焊接工艺。
Based on the numerical simulation technology, the mathematical model of the welding pool of the tower flange of the wind turbine was established by using the theory of thermodynamics and dynamics. The thermal-stress coupling and the thermo-structure coupling analysis were carried out by ANSYS. By analyzing the causes of angular deformation during flange welding, according to the welding technical requirements of the flange of the wind turbine and the tower, during the manufacturing process of the flange tower, the method of reserved welding deformation is used to improve the wind turbine flange and Tower welding process.