PSI - Issue 81

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

566

2

M

. o

K



(8)

ND

Q

Substituting the value of М о in equation (8), we obtain





2

Q Q G Rf d





. r r

K L tg

EL       

 

  

(9)

D ND

It should be noted that as the teeth slide relative to each other and come out of mesh, the spring compression and limit torque will increase, reaching values:

max 0 0 , N N Ch  

(10)

where С – spring rigidity; h 0 – tooth height. Accordingly, the maximum torque transmitted by the couplings





D

2

d

D

G

Q





r

.

max max M N L N tg   max

Q        EL D

Rf

  

(11)

r

2

2

2

After the teeth disengage, the torque on the drive half-coupling drops to the value of the friction torque on the end and non-working surfaces of the teeth, which can practically be taken as zero. Subsequently, the nature of the torque change will remain the same, but due to the tightening of nut 7 and the corresponding reduction in spring deformation, the values of the initial and limit torques will be mixed. To identify the most heavily loaded elements of the developed TSC that could affect the reliability of the device, its design was modelled as a solid CAD model using Solid Works software. Accordingly, typical dimensions characteristic of couplings of similar designs were specified, indicating the most probable stresses and forces from the torque transmitted by the device. To reduce the required design power, the CAD model of the coupling was somewhat simplified, namely, the equivalent effect of forces on the critical elements of the TSC from the bearing, spring and two limiting nuts is simulated by applying the necessary couplings.

Fig. 3 – CAD model of the studied TSC

The Solid Works Simulation engineering analysis module allows to accurately identify areas of structural elements where maximum equivalent stresses can cause their destruction. Considering that the safety clutch of the studied