| Summary: | <p>The work solves the problem of equal-strength design of the rolling stock elements in option of discrete equal-strength. For this purpose, has been developed the software built in SolidWorks and SolidWorks Simulation as an AddIn-application using necessary basic functionality and extending it in the specified part on the basis of API SolidWorks and COM technology.</p><p>The SolidWorks software is used to develop a 3D-model for general force frame of the wagon as an assembly. As this assembly is quite complicated and includes many elements both standard, and non-standard type, 3D - specification is developed by 3Dvia Composer software, which is included in the article in the form of the gif-animation and via-roller. This means is very useful for the evident analysis of topology and geometrical properties of a design as a whole, facilitates a procedure of adequate formation of the FE model providing accuracy and profitability of computing. From the point of view of profitability and opportunities of definition of concentrators of stresses with a sufficient accuracy for practice the combined model including volume and shell FEM is optimum.</p><p>In the work the analysis results of stress-strain state of a design are given in two options of static loading in the form of stress diagrams, the main areas of stress concentration are revealed.</p><p>Results of equal-strength design in the form of thickness distribution on thin-walled elements of a design, considered within FEM as shells, are received. It is shown that the developed software doesn't allow optimum design results, however it is economically viable, simple in use and can be applied to the solution of problems of rational design in design practice.</p><p>SolidWorks, as well as the majority of similar CADs, possess an open architecture and allow users to apply its functionality. This work continues a series of publications of the author of this paper and other authors concerning the API-based CAD/CAE adaptation and development.</p>
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