A Continuous Model for the Dynamical Analysis of Mistuned Bladed Rotors

Figure 3

Convergence analysis for the homogenization limit: relative error between modal frequencies evaluated according to the EB model and the HOM model, as a function of the number 𝑁 of blades. Rotor without imperfections. Modal frequencies relevant to modal numbers 𝑙=1 and — □  𝑛=2; – ⋅∘𝑛=3; – – ∗  𝑛=4; ⋅⋅▵𝑛=5. The triangle in the figure indicates the quadratic convergence slope.