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Vehicle excitation by passing over pavement unevenness represents the actual problem which is solved on many departments in this time. The numerical methods are mainly applied for the solutions of the interaction of similar systems. The Finite Element Method (FEM) is the best-known and widely used. It provides appropriate accuracy. In this article, commercial computer software ADINA based on the FEM is used to solve kinematic excitation of vehicle. The 2D model of vehicle which represents real type of lorry T-815 is excited by simulation of passage across obstacle. There are compared dynamic responses of the vehicle on the kinematic excitation at different speeds.

The experimental modal analysis is often used to validate the accuracy of dynamic numerical models. It is also a good tool to obtain valuable information about current condition of the structures that could help to determine residual lifetime. The quality of modal testing results is highly dependent on the proper estimation of the natural frequencies from the frequency response function. This article presents the experimental modal test of the laboratory steel structure in which the natural frequencies and mode shapes are determined.

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