PSI - Issue 81

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

563

Malashchenko et al. (2021), Gevko et al. (2017), Protsenko et al. (2021), Lyashuk et al. (2015), Roczek et al. (2018), Nagornyak et al. (1992). An important method of studying TSCs is a detailed study of their dynamic behavior by Zhou et al. (2024), Zhang et al. (2024). Such an analysis is usually accompanied by a study of the loads and deformation of the coupling elements, in particular, using modeling and finite element method, including simulation of experimental studies results of Sawarkaret al. (2025), Liu et al. (2024), Dutt et al. (2024). This contributes to the development of new approaches to the optimization of TSC structures by the authors Soleimani et al. (2025), Yin et al. (2025). The design features of couplings and drives aimed at improving their functional characteristics were studied by Controzzi et al. (2017), Hanqi et al. (2018), and Zhou et al. (2014). The above-mentioned authors and their colleagues considered various aspects of the functioning of machine and mechanism drives, but each new coupling design has its own individual characteristics, advantages, and disadvantages. Accordingly, there is a need to solve scientific and technical problems of improving reliability, in particular of TSC, by increasing their manufacturability through weight reduction, the use of inexpensive structural materials, and the identification of possible weak links and ways to eliminate or correct them by modelling the equivalent stresses acting on the critical components of TSC. 2. Research methods The theoretical research is based on mechanical and mathematical modelling of the functioning processes of the proposed TSC design using the basic principles of machine parts, machine and mechanism theory, theoretical mechanics, as well as the use of a solid CAD model of the coupling design using the SolidWorks Simulation engineering analysis module. Rationalisation of the contact profile based on mechanical and mathematical modelling will make it possible to avoid one of the significant drawbacks of the TSC – a sudden change in torque at the moment of slippage. Accordingly, to eliminate it, it is desirable to get rid of the slippage phenomenon completely or minimise the duration of this process by ensuring uniform disengagement of the kinematic link during overload.

Fig. 1. Design of a toothed safety coupling

The proposed TSC by Lutsiv et al. (2023) (Fig. 1) with self-disconnection capability consists of a drive half coupling 1, which is mounted on the drive shaft 2 by means of a splined connection 3 with the possibility of axial