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The article presents the results of the strength calculation of the FLAT RACK removable module design using the finite element method. The FLAT RACK removable module provides higher efficiency of freight transportation. The special features of the removable module are its components made of rectangular tubes and its fittings with viscoelastic bonds. The parameters of the profile for such a removable module are determined through the maximum resistance moments of its components. The research includes mathematical modelling of the dynamic loading on the removable module placed on a flat wagon during a shunting impact. The accelerations to the removable module are also determined. The results are confirmed by computer modelling of the dynamic loading on the removable module. It is found that the strength of the removable module is provided. The research conducted may be used by those who are concerned about designing advanced module-type rail vehicle structures and enhancing their operational efficiency.

The object of research is the processes of occurrence, perception and redistribution of loads in the design of the car brake cylinder in operation. To compensate for angular shifts of the brake cylinder rod at its maximum exit from the housing, improvement measures are proposed. This improvement consists in the use of a safety element to limit the angular movements of the rod when leaving the body. The load of the brake cylinder rod during its angular displacements is determined. The condition for ensuring the strength of the rod is obtained. The optimal parameters of the pipe of the safety element (limiter) of the brake cylinder rod were determined by its allowable moment of resistance. For the possibility of moving the levers interacting with the stem, special windows are provided in the limiter. It is proposed to fix the limiter to the cover by welding. To determine the strength of the brake cylinder, a calculation was made using the finite element method. The results of a robust calculation showed that the maximum equivalent stresses occur in the brake cylinder cover and amount to 118.5 MPa. Therefore, the strength of the brake cylinder is ensured. A feature of the obtained results is that the proposed improvement can be applied not only at the stage of designing a brake cylinder, but also at the stage of modernization. The sphere of practical use of the obtained results is railway transport. The conditions for the practical use of the results are the absence of deformations of the brake cylinder rod. The research carried out will help to improve the efficiency of rolling stock brakes, ensure traffic safety, increase rolling stock speeds, deliver goods, etc. Also, the conducted research will contribute to the creation of developments to improve the reliability of the rolling stock brakes

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The publication presents the results of research into the strength of an improved tank container. The tare of a tank container can be reduced through application of composite material for the tank. In this case its mass can be 46% lower than that of a metal tank. The strength of the tank was calculated by computer simulation. The maximum stress occurs in its lower part and is about 295 MPa. The dynamic loading of a tank can be reduced by application of elastic elements in the fittings of a tank container. The reduction in dynamic load is achieved by the elastic friction forces generated in the fittings. The results of mathematical modelling of the tank container dynamics proved the effectiveness of this solution.