Optimization of the body strut of the grain hopper wagon

The article describes the optimization of vertical body struts of the bearing structure of the grain hopper wagon. The study included obtaining mathematical models using modern methods of the mathematical planning of the experiment. At the same time, the target function of the optimization was to reduce the material consumption for the strut. Based on the study conducted, it has been found that the mass of the strut, allowing for the optimization of its geometric parameters, is 4.3% lower than that of the existing structure. It should be noted that the optimization model proposed can also be used for selecting the optimal material for the strut, which may additionally reduce the material consumption of the hopper wagon body. The strength of the hoper wagon body with its optimized struts was calculated using the finite element method. The results of the calculation have shown that the strength indicators of the frame under the main operating loading conditions are within the permissible limits. The conducted research will contribute to the development of best practices for modern rail wagon designs with improved technical and economic characteristics.