معرفي الگويي از جرم متحرك به صورت يك دستگاه سه درجه آزادي آزمايشگاهي

In this paper first the motion equations of a three degree of .freedom system which is a laboratory model for a moving mass on a rough surface of a bridge has been driven; then the importance of different parameters in motion equations has been studied. Finally by a computer program function of the model has been analyzed. The results show the important role of velocity, mass (of vehicle), and roughness (of the bridge surface) in motion equation.