Issue 30

G. Belingardi et alii, Frattura ed Integrità Strutturale, 30 (2014) 469-477; DOI: 10.3221/IGF-ESIS.30.57

The response of the elements (Fig. 3) emphasizes an initial perturbation of the signal, but very quickly the behaviour of the system becomes stable and leads to the theoretical values. Calculated averaged values are: force in x direction F x =157.18 N, force in y direction F y =-198.68 N and force in z direction Fz=-134.69 N.

Electric motor rpm

F t

·K A

/b N

N S

K v

500

71.85 71.85 71.85 71.85 65.32 58.79 45.72 39.19 35.93 29.39

0.02 0.05 0.09 0.14 0.19 0.24 0.30 0.35 0.41 0.47

0.80 1.01 0.80 1.02 0.80 1.05 0.80 1.07 0.78 1.10 0.77 1.14 0.74 1.20 0.72 1.27 0.71 1.33 0.69 1.44

1000 2000 3000 4000 5000 6000 7000 8000 9000

Table 2 : K v

values in function of the electric motor speed.

(a) (b)

(c) Figure 3 : Forces of the Rigid simulation of Gear 4, (a) contact force in x direction (radial force), (b) contact force in y direction (tangential force), (c) contact force in z direction (axial force).

473