Bifurcation and Nonlinear Dynamic Analysis of Externally Pressurized Double Air Films Bearing System

Table 1

Comparison of rotor center orbits for steady floating-ring calculated by FDM and hybrid method, respectively.

		Displacement
Conditions		𝑋 (nT)		𝑌 (nT)
		𝐻=0.001	𝐻=0.01	𝐻=0.001	𝐻=0.01
FDM	𝑚1=4.3 kg; 𝜔=6×10^6 rpm	−0.1081349035	−0.1181808003	0.0517288907	0.0514134509
Hybrid method		−0.1082889076	−0.1082858013	0.0517174812	0.0517172143
FDM	𝑚1=7.0 kg; 𝜔=6×10^6 rpm	−0.2582283150	−0.2501341276	0.0658257815	0.0685321157
Hybrid method		−025823243783	−0.2582657430	0.0658701321	0.0658701121