The paper describes a computational model and an original software system, UKS-Dynamic, for the analysis of dynamic interaction between train pantographs and an overhead catenary system at high-speed railway lines. The study focuses on the problem of reducing non-physical high-frequency oscillations arising in dynamic simulations due to the spatial discretization of flexible wires of the catenary. A number of model problems are solved both analytically and numerically, and the quality of high-frequency mode suppression is studied for several suppression techniques, including specific time integrators (beta-Newmark and generalized-alpha methods) and Rayleigh damping. The model is validated against the solutions of etalon problems given by the EN 50318:2018 standard for alternating and direct current catenary lines at a train speed of 320 km/h. Code parallelization employs the OpenMP library; the code profiling results are presented for both serial and parallel implementations.
- Overhead catenary line
- Dynamic simulation
- High-frequency oscillation suppression