RESEARCH OF THE STRENGTH OF AN OPEN WAGON BODY WITH IMPROVED END WALL CLADDING
Abstract
Introduction. Rail transport is an integral part of the successful functioning of the European economy. To ensure its further development, it is important to introduce modern rolling stock designs with improved technical and operational performance. Purpose. Scientific substantiation of the use of corrugated sheets in the cladding of the end walls of the open wagon body. Results. To improve the strength of the end walls of an open wagons, it is proposed to reinforce their lower part, 1/3 of the height of the lower strapping, with horizontal corrugations. The geometric parameters of the corrugations were determined by the moment of resistance of the sheet. To do this, a spatial model of a typical sheet was built in SolidWorks and its moment of inertia was determined using built-in options. The moment of resistance of the sheet was then calculated. Taking into account the determined moment of resistance of the standard sheet, the appropriate corrugation diameter of the improved skin sheet was selected, at which the moment of resistance has a value that exceeds that of the standard sheet. To determine the strength of the open wagon, taking into account the proposed solutions, its calculation was carried out. A universal open wagon model 12-295 was chosen as a prototype. The strength calculation was carried out in SolidWorks Simulation using the finite element method. It was found that the maximum stresses in the end wall occur in the areas of interaction between the horizontal belts and the corner posts and amount to about 180 MPa. In the lower part of the cladding sheet, the stresses decreased to 132 MPa, which is 5.3% less than in a typical one. The maximum displacements in the end wall occur in the upper strapping and amount to about 3 mm. Conclusions. The results of the research will contribute to the creation of recommendations for the design of modern open wagon structures and increase the efficiency of their operation.
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References
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