Fig. 8 | Scientific Reports

Fig. 8

From: Stability analysis of hydrodynamic journal bearings with variable axial geometrical configuration using titanium dioxide nanoparticles as lubricant additives

Fig. 8The alternative text for this image may have been generated using AI.

Vibration behavior and rotor trajectory at \(\varepsilon_{o} = 0.6\,,\,\,\varepsilon^{\prime}(0) = 0.05\) using modified Krierger-Dougherty viscosity model with \(\Phi = 0.005\,\,and\,\,\beta = 7.77\): (a & b) stable oscillations (\(\lambda = 36\)); (c & d) critical case (\(\lambda_{cr} = 44.125)\) and (e & f) unstable oscillations (\(\lambda = 56)\).

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