Dynamic analysis of the tramcar & track interaction

Prikazan je numerički model gibanja tramvajskog vozila. Tračnica je modelirana kao Euler-Bernullijev kontinuirani nosač s diskretno raspodijeljenom masom. Vozilo je diskretizirano s tri koncentrirane mase i prijenosom opterećenja preko jednog kotača. Ležajevi nosača i veze među masama modelirane su Kelvinovim reološkim elementima. Sustav diferencijalnih jednadžbi gibanja riješen je metodom prediktor-(re)korektor, a kontakt kotača i tračnice proračunan je primjenom metoda sila.The numerical model of tramcar motion is presented. The rail is modelled as an Euler-Bernoulli continuous beam with the discretely distributed mass. The vehicle is discretized with three concentrated masses, and with load transfer via one wheel. Beam bearings and mass links are modelled by means of Kelvin rheological elements. The differential equation system for motion was solved by the predictor - (re)corrector method, and the wheel and rail contact was calculated by means of the force methods