风力发电机传动轴的锻压成形计算机仿真分析

Computer Simulation Analysis of Forging Forming of Transmission Shaft of Wind-driven Generator

为了获得强度、塑性、韧性、疲劳强度及可靠性较高的风力发电机传动轴,分析了它的锻压成形工艺,建立了镦粗、冲孔、管端锻及法兰模锻四大锻压工序的有限元分析模型。运用有限元分析软件对其在四大锻压工序中温度及等效应变场进行了仿真分析。结果表明,不同锻压工序中的锻压温度及等效应变不同,在镦粗工序时温度最高,冲孔工序时温度变化最大,法兰模锻工艺时温度变化最小;镦粗工序时等效应变的变化最小,冲孔工序时等效应变的变化最大。

In order to obtain the wind-driven generator＇s transmission shaft with high strength, plasticity, toughness, fatigue strength and reliability, the forging forming process was analyzed, and the finite element analysis models of four forging procedures （upsetting, punching, tube end forging and flange die forging） were established. Temperature and equivalent strain fields of the shaft in the four forging procedures were simulated by using the finite element analysis software. The results show that the forging temperature and the equivalent strain are different during different forging procedures, the temperature is the highest in the upsetting process, the temperature change is the largest in the punching process, and the temperature change is the smallest in the flange die forging process. The change of the equivalent strain is the smallest in the upsetting process, and the change of the equivalent strain is the largest in the punching process.