Особливості визначення навантаженості несучої конструкції критого вагона з пружними елементами в хребтовій балці

Abstract

The authors suggest elastic elements in the body of the center sill being the basic carrying element of the frame to decrease the dynamic loads. This solution can transform the dynamic loads on the body into the work of the dry friction forces between the components of the center sill. The authors substantiated the solution by means of the mathematic modelling of the dynamic loads on the body of a boxcar in the vertical plane. The differential equations were solved in the MathCad software. This solution can decrease the accelerations on the body of a boxcar by about 20 % in comparison to that of the prototype car. The study presents the strength calculations and the design service life for the body of a boxcar. It was calculated that the design service live of a boxcar was longer than that of the prototype car by about 20 %. The research may be used by those who are concerned about higher efficiency of railway transportation.