风力发电机塔吊装机横梁有限元分析

The Finite Element Analysis of Cross Beam of Wind Turbine Tower Crane

针对普通风力发电机塔吊装机钢制横梁,重量大、易受到振动破坏的特性,基于铝制结构重量轻、耐腐蚀、易加工等特点,将原钢制横梁改为铝制结构,使用ANSYS Workbench软件对其进行有限元网格划分、静态特性分析、模态分析和谐响应分析,分析其刚度和强度。基于有限元分析结果,对横梁结构进行改进,使吊装机的激振频率远离横梁共振频率,可有效避免工作过程中产生共振,增加风力发电机塔吊装机横梁的稳定性以及耐疲劳性,提高设备的使用寿命。

The steel crossbeam of ordinary wind turbine tower cranes has a large weight and is prone to vibration damage.Based on the characteristics of aluminum structure such as light weight,corrosion resistance,and easy processing,this article changes the original steel crossbeam to an aluminum structure,in this paper,ANSYS Workbench software is used to carry out finite element meshing,static characteristic analysis,modal analysis and harmonic response analysis of the beam.This article analyzes the stiffness and strength of the beam.Based on the result of finite element analysis,the structure of the beam is improved.The exciting frequency of the hoisting machine is far away from the resonance frequency of the beam.This increases the stability and fatigue resistance of the wind turbine tower crane beam,thereby improving the service life of the equipment.