PSI - Issue 81

Juraj Gerlici et al. / Procedia Structural Integrity 81 (2026) 66–72

70

The pressure caused by the cargo on the body walls was calculated using the formula given by the DSTU standard (2014):

4 2  −       

(3)

2 tan

,

p P g H 

=   

where γ is the density of the transported cargo, H is the height of the body wall, φ is the angle of natural slope of the transported cargo, g is gravitational acceleration. Rigid connections were installed on the horizontal surfaces of the center pivot. The calculation results are shown in Fig. 7 to Fig. 9. The maximum stresses occur in the body mounting zones (Fig. 7) and are 305.1 MPa (Fig. 8). These stresses are lower by 1.7% than the permissible ones, which are taken to be 310.5 MPa for steel grade 09G2S as in the DSTU standard (2014).

Fig. 7. Areas of greatest stress concentration in the open wagon body.

Fig. 8. A distribution of stresses in the open wagon body, a side view.

Fig. 9. A distribution of stresses in the open wagon body, a bottom view.