An Improved Rigid Multibody Model for the Dynamic Analysis of the Planetary Gearbox in a Wind Turbine

Figure 16

Modal energy distributions: (a), (c), and (e) are distributions of the second rotational natural frequency of the second stage; (b), (d), and (f) correspond to the third rotational natural frequency of the second stage. The 3 bars in the subplots in the first row represent the energy of the three stages. The 3 bars in the subplot in the second row represent the rotational energy of all the components except for the planets, the translational energy of all the components except for the planets, and the energy of all the planets, respectively; in the subplots in the third row, the first four bars and the second four bars represent the energies in the first stage and the second stage (refer to Figure 4), bar 9 represents the rotational energy of the third stage, and bar 10 represents the other energy of the third stage.

(a)

(b)

(c)

(d)

(e)

(f)