This article is devoted to determining of the development of CAEsystems influence (Computer-AidedEngineering) finite element analysis railway carriage building industry. There are stages of development of CAE-systems, their capabilities in the design of innovative rolling stock on the example of LTD «UKBV» considered here, and the dependence of the complexity of calculating the body on the method used is determined.
An example of strength calculation in ANSYS using beam elements is shown in Fig. 2. To increase the convergence of the results of calculations and tests, a transition was made from the use of beam elements to the plane. An example of strength calculation in ANSYS using planar elements is shown in Fig. 3.
In 2010, ANSYS Workbench was introduced. The combination of modern functionality, availability and quality of built-in tools had a positive impact on the timing of the calculations and the convergence of the results with the test results), and also expanded the list of performed calculations. In addition to the static analysis (Figure 4), it became possible to calculate the loss of stability (used to determine the critical loads and forms of loss of stability in a linear formulation based on stationary analysis). Calculation of the stability of the boiler is shown in Fig. 5. In the same way, it became possible to estimate the kinematics by the example of the unloading mechanism of the hopper car (Fig. 6), and the brake linkage (Fig. 7).
In ANSYS Workbench, unlike the predecessor, where there were problems with applying the finite element mesh, you can work with complex geometry, for example, cast parts. The calculation of cast parts of a three-axis trolley is shown in Fig. 8. The economic effect obtained from the introduction of various methods of calculation is presented in Table. 1. Force and displacement method FEM in ANSYS (beam elements) FEM in ANSYS (planar elements) FEM in ANSYSWorkbench
Today, the use of CAE-systems has become the standard of engineering activity in all industries due to the following advantages:
it is often the only possible method of designing the majority of complex real technical objects and systems because they can’t be accurately described using analytical formulas and relations;
allows you to calculate the parameters of the product, its performance characteristics even before the material embodiment of the product;
allows you to significantly reduce the costs and laboriousness of research and development in comparison with the use of material samples and real technical systems.