小支柱簇双层瓦推力轴承热弹流润滑性能分析

Performance analysis for thermo-elastic-hydrodynamic lubrication of thrust bearing with pins and double layer system

对Alstom公司三峡小支柱簇双层瓦试验推力轴承进行了热弹性流体动力润滑性能有限元分析 .采用推力轴承润滑计算的有限元程序 ,并借助结构有限元程序ADINAT、ADINA的热传导和热弹变形分析功能 ,形成了一套完整的推力轴承热弹流动力润滑性能分析软件 .物理模型包括润滑油膜、推力轴承和镜板推力头 .对三峡试验推力轴承性能的计算结果和测量结果进行了对比分析 .分析结果表明 ,计算结果和实测的结果吻合 ,试验模型使用的小支柱簇双层瓦可有效地控制瓦的热弹变形 ,进一步优化小支柱的弹性 。

The thermo-elastic-hydrodynamic lubrication performance of Three Gorges test thrust bearing with pins and double layer system for Alstom has been analyzed by the finite element methods. The lubrication calculation is programmed with the finite element methods. Together with the function of structural finite element program ADINAT and ADINA, a complete software of the thermo-elastic-hydrodynamic(TEHD) lubrication performance analysis is obtained, where the physical model includes lubricating oil film, thrust bearing, runner and thrust head. The thermo-elastic-deformation of thrust bearing and runner is analyzed with the program ADINA(T). The calculated results are compared with the measured ones in real operation. It shows that calculated characteristics are coincident with the experimental measurement, the pins and double layer system used in the test model has the advantage to control the thermal and elastic deformation of the pad, and the elasticity of the optimized pins further allows equalizing a significant part of the runner deformation.