Analysis of multi lobe journal bearings with surface roughness using finite difference method

International Conference on Recent Advances in Materials & Manufacturing Technologies

Phaniraja Kumar, K.^1 ; Bhaskar, Sudaya^2 ; Manzoor Hussain, M.^3

IBG Manufacturing, Tech Mahindra America, United States^1

Department of Mechanical Engg., Al Habeeb College of Enggand Tech, Telangana, India^2

Department of Mechanical Engineering, JNT University Hyderabad, Telangana, India^3

关键词: Bearing surfaces;    Finitedifference methods (FDM);    Flow factors;    Fourth order Runge-Kutta methods;    High load;    Non linear;    Operating speed;    Roughness orientation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/346/1/012071/pdf
DOI  :  10.1088/1757-899X/346/1/012071

来源: IOP

【 摘 要 】

Multi lobe journal bearings are used for high operating speeds and high loads in machines. In this paper symmetrical multi lobe journal bearings are analyzed to find out the effect of surface roughnessduring non linear loading. Using the fourth order RungeKutta method, time transient analysis was performed to calculate and plot the journal centre trajectories. Flow factor method is used to evaluate the roughness and the finite difference method (FDM) is used to predict the pressure distribution over the bearing surface. The Transient analysis is done on the multi lobe journal bearings for threedifferent surface roughness orientations. Longitudinal surface roughness is more effective when compared with isotopic and traverse surface roughness.