Abstract
It was developed a computational model to evaluate the body strength of short base hopper models 19-758-01, 20-471, and 20-4015 when unloading them on the car dumper VRS–134M. Modeling of the stress-strain state of the car design was made using the finite element method. It was established that in terms of strength, bodies of the hopper models 19-758-01, 20-471, and 20-4015 are suitable for unloading on car dumper. The results of experimental studies showed sufficiently high accuracy of the chosen computational model for estimating the stress-strain state of design and confirmed the possibility of hopper car unloading on the car dumper VRS–134M.
Highlights
Open-type hopper cars of the models 19-758-01, 20-471, 20-4015 [1,2] have a typical design for this class of rolling stock
Their bodies consist of a frame, lateral, inclined end walls and unloading bins closed by hatches from the outside
General requirements to the types of loads acting on the car when unloading on the car dumper are given in the «Norms ...» [4] and DSTU GOST 33211:2017 [5]
Summary
Open-type hopper cars of the models 19-758-01, 20-471, 20-4015 [1,2] have a typical design for this class of rolling stock. Their bodies consist of a frame (center sill, body bolster and end beams), lateral, inclined end walls and unloading bins closed by hatches from the outside. The end walls are supported by the car frame through the inclined or vertical posts. General view of such a car using the example of wagon for pellets transportation is shown in the (Fig. 1). It is necessary to develop the corresponding methodology for both placing hopper cars in the car dumper, as well as for determining the actual operational loads
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