PSI - Issue 2_A

Francesca Curà et al. / Procedia Structural Integrity 2 (2016) 3610–3616 Author name / StructuralIntegrity Procedia 00 (2016) 000–000

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Table 1. Gear parameters. Geometrical data Number of teeth ( ܢ ) Pitch diameter ( ܌ሾ ܕܕ ሿሻ Module ( ܕ ሾ ܕܕ ሿሻ Tooth thickness at the pitch( ܛ ሾ ܕܕ ሿ ) Tooth thickness at the root ( ܛ ܘ ሾ ܕܕ ሿሻ Tooth height (h[mm])

Material features Young modulus E ሾ ƒሿ Density ɏሾ‰Ȁ ଷ ሿ

31 93

210000

7800

3

4.71 7.55 6.75

Face width (B[mm])

51

3. Results and discussion The initial crack has been placed at the point in the tooth root fillet where the maximum equivalent stress (Von Mises) is reached.

Fig. 3. Boundary conditions applied to the models.

To identify this point, 3D static simulations have been performed, Fig. 4 shows and example of the obtained results.

Fig. 4. Static simulation to identify the most stressed point in the tooth root fillet.