Theoretical Vibration Analysis Regarding Excitation due to Elliptical Shaft Journals in Sleeve Bearings of Electrical Motors

Figure 13

Semi-major axes of the relative orbit (a) between 𝐵₁ and 𝑉₁ and (b) between 𝐵₂ and 𝑉₂, depending on the rotor speed 𝑛 and on the difference angle Δ𝜑.

(a)

(b)