风力机盘式制动器的热-结构理论模型分析

Establishment of Axisymmetric Thermal Structure Theory Model and Analysis on Wind Machine Disc Brake

充分考虑了风力机制动盘不同表面有不同的边界条件,将制动盘和摩擦衬片各分为了3部分,分别分析和讨论了其边界条件。在此基础上建立了风力机盘式制动器的热—结构耦合模型,使用直接耦合的方法,利用有限元软件ansys模拟了制动盘的温度场、摩擦衬片的应力场。模拟结果显示:摩擦衬片上温度分布是不均匀的,制动盘上的应力分布也是不均匀的,制动盘应力分布最高的区域集中在摩擦接触表面;温度越高的区域应力也就越高,应力场和温度场的分布基本是一致的。

Fully considering different boundary conditions on different surfaces of wind dynamic plate,the brake disc and friction lining are respectively divided into three parts,and its boundary conditions are discussed.On the basis of the establishment of a wind turbine disc brake thermal-structure coupling model,using the direct coupling method,finite element software Ansys was used to simulate the temperature field and friction lining stress field of brake disc.Simulation results show that the friction lining on temperature distribution is not uniform,the stress distribution on the brake disc is uneven,the stress distribution of brake disc of the highest areas concentrated in the frictional contact surface.The higher the temperature is,the regional stress is higher,the distribution of stress field and temperature field in the basic is the same.