Аннотация:
The object of this study is the processes of
occurrence, perception, and redistribution of
loads in the body of a gondola car with reinforcing
belts in the structure of side walls.
In order to improve the strength of side walls
of the gondola car body, it is proposed to strengthen them with additional belts. At the same time, it
is reinforced with diagonal belts in three sections
of the body on the side of the consoles, and in the
middle section, 1/3 of the height from the lower
strapping, with a horizontal belt. To determine
the parameters for the execution of profiles in the
reinforcing belts, the calculation of the gondola
car body as a rod system was carried out. Based
on the resulting values of bending moments, the
moment of resistance of the cross-section of the
profiles of the reinforcing belts was determined.
The calculation of the strength of the body of the
gondola car under the main modes of its loads in
operation (I and III calculation modes) was carried out. It was found that the resulting stresses
were 10.3 % lower than those occurring in a typical design of a gondola car body. The movement
of the gondola car in the empty and loaded states
was evaluated.
A feature of the reported research results is
that the improvement of the strength of the side
walls of the gondola car body is achieved by
increasing the rigidity of its frame.
The field of practical use of the results is
the engineering industry, in particular, railroad
transport. The conditions for the practical application of results are the symmetrical distribution
of reinforcing belts along the length of the gondola car body.
This study results may contribute to improving
the durability of gondola car bodies in operation,
and accordingly to reducing costs for unscheduled
repairs. Also, the findings could prove useful for
designing modern structures of railroad cars
