Session: 23-04 Gas Lubricated Journals

Paper Number: 153012

Numerical Study and Optimization of Hydrodynamic Herringbone Micro-Grooved Journal Bearing 

To enhance the static and dynamic characteristics of bearing under radial loading circumstances, a herringbone texture across the journal bearing surface has been proposed and optimized in this study. The non-linear Reynolds equation is developed for herringbone micro-grooved journal bearing (HMGJB) and numerically solved using the finite difference discretization method and the Successive Over-Relaxation (SOR) algorithm. The study evaluates static characteristics such as pressure distribution, film thickness, load-carrying capacity, frictional torque, coefficient of friction, and side leakage, as well as dynamic characteristics, including stiffness and damping coefficients. To assess the stability of the rotor-bearing system, critical mass and critical whirl frequency are also determined. The static performance of the HGJB is enhanced by optimizing texture parameters such as groove angle, depth, width, and the number of grooves. An artificial intelligence-based optimization approach using Artificial Neural Networks (ANN) and Adaptive Neuro-Fuzzy Inference Systems (ANFIS) is employed to optimize both static characteristics, identifying the most influential parameter affecting the bearing’s real-time performance. ANN is used to train the distinctive datasets obtained from the numerical analysis, and the ANFIS surface plot provides the best suitable range of the bearing parameters. The study highlights the significance of numerical methodologies and AI-based optimization techniques in the effective design of HGJBs, providing key insights for improving bearing performance

Presenting Author: Hara Prakash Mishra National Institute of Technology, Rourkela

Presenting Author Biography: I am Hara Prakash Mishra, a Ph.D. research scholar in the Mechanical Engineering Department at the National Institute of Technology Rourkela. I am working on the design and development of an alternate grooved bearings for my research work.

Authors:

Hara Prakash Mishra National Institute of Technology, Rourkela
Suraj Kumar Behera National Institute of Technology, Rourkela