A study of nonlinear transient behavior of worn out 3-lobe nonrecessed journal bearing

The purpose of this work is to discuss how the nonlinear transient behavior of a symmetric 3- lobe non-recessed hybrid journal bearing is affected by the worn bearing surface. The stability of a non-recessed worn out 3-lobe journal bearing has been investigated using the RungeKutta technique to solve nonlinear equations of motion. For various wear depth parameter values, the journal center trajectories have been plotted. According to the stability study's findings, a 3-lobe hybrid journal bearing's stability is severely influenced by the wear defect. The selection of the bearing's non-circular shape and worn-out surface parameter must be correct in order to sustain stability under dynamic operating conditions.