PSI - Issue 39

Aljaž Ignatijev et al. / Procedia Structural Integrity 39 (2022) 89 – 97 Author name / Structural Integrity Procedia 00 (2019) 000–000

91 3

Fig. 1. (a) Geometrical model 1; (b) Geometrical model 2.

Five different load cases with the different values of torque were considered (see Table1). In the case of the geometrical model 2, the total force was defined at the outermost single contact point, which was equivalent to the torque transmitted via contact as shown in Fig. 1a.

Table 1. Load cases used in the computational analyses. Load case Torque T [Nm]

Total force F [N]

1 2 3 4 5

27 30 33 36 40

1,682 1,869 2,057 2,243 2,493

Finite element meshes for both models are shown on Fig. 2 and use the tetrahedral parabolic finite elements, where global size equals to 0.4 mm. Since we expected the important stress-strain values in the tensile zone of the tooth root, the local refinement with the element size of 0.1 mm was considered in this area. The total number of finite elements was 275,000 for model 1 and 194,000 for model 2.