Vehicle – bridge dynamic interaction represents the actual problem which is solved on many work places. Within the solution of the task the numerical methods are applied mainly. The Finite Element Method is the best-known and widely used. Several commercial systems works with the algorithms based on the FEM principles, for example program system ANSYS. The submitted article is dedicated to the numerical modelling of vehicle – bridge interaction problem in the environment of this system. It compares the numerical accuracy of FEM with other numerical method and illustrates the influence of the speed of vehicle motion on the bridge mid-span deflection.

ANSYS; finite element method; vibration; dynamic analysis; random profile