瓦块弹性对大型水轮发电机组径向可倾瓦轴承润滑性能的影响

用有限元素法和有限差分法建立了可倾瓦轴承瓦块三维弹为形及热效应的计算模型。分析了由瓦面油膜压力引起的三维瓦块弹性变形对采用小包角径向可倾瓦及瓦块支点非均匀密集布置方式下滑动轴承热动力润滑性能的影响。结果表明：在大型低速重载条件下，瓦块三维弹性变形及热效应对小包角瓦块非均匀布置的径向可倾轴承后静态特性和动力特性均有较大影响。

The Effects of Pad Deformations on Large Tilting pad Journal Bearing for Tubular Turbine Generator Set

The finite element method and finite difference method are employed to establish the model for considering the three dimensional elastic deformations of pad and thermal effects in a tilting pad journal bearing. The effects of the three dimensional pad deformations on the thermohydrodynamic performance of large scale tilting pad journal bearing with non uniformly and closely packed pad pivot distributions at small pad wrap span are analyzed in detail. The results show that the pad deformations have considerable effects on both the static performance and the dynamic characteristics under the large scale and the low speed and heavy duty conditions.