Hybrid porous tilting pad bearings with the advantages of gas porous bearings and tilting pad bearings exhibited excellent rotor-supporting performance with high accuracy and stability. Under hybrid lubrication, the transient adaptive motion of the tilting pads was important for the rotordynamic characteristics. A novel fluid–structure interaction model of hybrid porous tilting pad bearings was developed to investigate the transient hydro forces and the pad's adaptive motion. The rotordynamic coefficients of the hybrid porous tilting pad bearings were identified using the rotor harmonic trajectory. The computational fluid dynamics-fluid–structure interaction model was validated with the experimental data. The effects of eccentricity ratios, rotor speeds, supply pressures, pivot radial stiffnesses, and dampings on the pad adaptive motion and the rotordynamic coefficients were evaluated. The pad self-adaption motions significantly influenced the supporting and vibration-absorbing characteristics of hybrid porous tilting pad bearings.

中文翻译：

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一种新颖的瞬态计算流体动力学-流体-结构相互作用模型，用于混合多孔可倾瓦轴承的瓦自适应运动和转子动力系数

混合多孔可倾瓦轴承结合了气体多孔轴承和可倾瓦轴承的优点，表现出优异的转子支撑性能，具有高精度和稳定性。在混合润滑下，可倾瓦的瞬态自适应运动对于转子动力学特性非常重要。开发了混合多孔可倾瓦轴承的新型流固相互作用模型来研究瞬态水力和瓦的自适应运动。使用转子谐波轨迹确定混合多孔可倾瓦轴承的转子动力系数。计算流体动力学-流-固相互作用模型通过实验数据进行了验证。评估了偏心率、转子速度、供给压​​力、枢轴径向刚度和阻尼对垫自适应运动和转子动力系数的影响。瓦自适应运动显着影响混合多孔可倾瓦轴承的支撑和减振特性。