[HTML][HTML] Lateral vibration analysis of flexible shafts supported on elliptical journal bearings

WM Miranda, MTC Faria - Tribology Letters, 2012 - Springer
Tribology Letters, 2012Springer
This paper presents the development of a finite element procedure for the dynamic analysis
of flexible rotors supported on fluid-film elliptical journal bearings operating under several
operating conditions. The rotating shaft is modeled by using Timoshenko beam theory and
the coupled rotating components, such as disks and impellers, are modeled by using
lumped masses. The modeling of the elliptical journal bearings is performed by solving the
lubrication equations generated from the application of a linearized perturbation method on …
Abstract
This paper presents the development of a finite element procedure for the dynamic analysis of flexible rotors supported on fluid-film elliptical journal bearings operating under several operating conditions. The rotating shaft is modeled by using Timoshenko beam theory and the coupled rotating components, such as disks and impellers, are modeled by using lumped masses. The modeling of the elliptical journal bearings is performed by solving the lubrication equations generated from the application of a linearized perturbation method on the classical Reynolds equation. The bearing carrying-load capacity and the linearized dynamic force coefficients can be predicted for elliptical bearings with different preloads and journal eccentricities. The rotor transient whirling unbalance response is estimated by performing the time integration of the finite element equations using Newmark method. Experimental whirling unbalance response of a rotating shaft supported at two identical journal bearings is used to validate the finite element procedure. A comparative analysis of the dynamic response of flexible rotors supported on both cylindrical and elliptical journal bearings is performed to show that some elliptical bearings are capable of attenuating the rotor unbalance response more efficiently than cylindrical bearings are.
Springer
以上显示的是最相近的搜索结果。 查看全部搜索结果

Google学术搜索按钮

example.edu/paper.pdf
搜索
获取 PDF 文件
引用
References