PSI - Issue 81

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

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Fig. 10. Deflections of the open wagon body under the load.

In the side wall, the highest stresses are recorded in the lower parts of the vertical uprights – about 130 MPa, which is lower by 7% than in the typical version of the casing (Fig. 8). The maximum displacements occur in the middle part of the upper strapping and are about 5 mm (Fig. 9). Therefore, under the given loading modes, the strength of the open wagon body is ensured. The calculation was also carried out for other load calculation schemes in accordance with modes I and III. The calculation results are given in Table 1.

Table 1. Results of the strength calculation of the open wagon body.

Load mode

Strength indicator

I

III

impact

pressing

jerk-stretch

impact-compression

jerk-stretch

Stress, MPa

305.1

297.2

294.3

207.3

205.6

Displacement in nodes, mm

5.04

4.96

4.92

4.53

4.52

It can be concluded by analyzing the data given in Table 1 that the strength of the open wagon body is ensured. The development of this study may consist in determining the strength of the open wagon body when transported by rail ferry. In this mode, the side wall experiences greater loads than those that occur during operation on the main tracks. Therefore, it is planned to consider this type of load on the open wagon body as well. In addition, as it is stated by Kondratiev et al. (2021), it is possible to study the feasibility of using composite materials for the manufacture of the open wagon body wall cladding. The conducted studies will contribute to the creation of developments in terms of increasing the technical and economic indicators of wagons, as well as improving their strength under operational load conditions. 5. Conclusions 1. The options for the possible implementation of corrugations of the open wagon wall sheets were investigated. It was established that the most rational is the manufacture of wall sheets with rectangular corrugations. The thickness of the wall sheets of the open wagon body was determined using the Bubnov-Galerkin method. In this case, the calculation of the sheets` thickness provided that the strength is ensured for a value of 3.4 mm. Considering the fact that the cladding will be formed by rectangular corrugations, the thickness of the sheet can be taken as δ = 1.8 mm. The moment of resistance of the sheet is W =2,265,135.2 cm 3 . The mass of the sheet is 67.26 kg, which is lower by 10.5% than the mass of a typical sheet. 2. The strength of the open wagon body with cladding formed by rectangular corrugated sheets was calculated. It was established that the maximum stresses occur in the first design mode (impact). They arise in the body fastening zones and amount to 305.1 MPa. At the same time, these stresses are lower by 1.7% than the permissible ones. In the side wall, the highest stresses were about 130 MPa, which is lower by 7% than in the typical version of the cladding. The maximum displacements occur in the middle part of the upper strapping and are about 5 mm.