PSI - Issue 81

Taras Dubyniak et al. / Procedia Structural Integrity 81 (2026) 562–569

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Fig. 6 – Modelling of maximum equivalent stresses on the splines of the driven half-coupling

The maximum resulting displacements are observed on the teeth of the driven half-coupling and amount to 0.26 mm. The maximum stress for this part is equal to 26 MPa (Fig. 7).

Fig. 7 – Modelling of maximum equivalent stresses on the teeth of the driven half-coupling

The load on the cup-shaped bushing under the tested operating mode of the safety clutch is low, and the stress in this part is about 1 MPa.

Fig. 8 – Modelling of maximum equivalent stresses in a cup-shaped bushing and adjusting nut

Accordingly, the stresses in the adjusting nut do not exceed 14 MPa (Fig. 8). This means that these elements are not subjected to critical loads and do not require special materials or production conditions. By modelling the load in the form of nominal torque, it is necessary to identify the most heavily loaded elements of the designed TSC structure, where maximum equivalent stresses can cause the destruction, and find practical solutions to these problems.