Dynamic simulation of a simply supported bridge subjected by moving mass with Simulink models

Abstract

It is very important to investigate dynamic interactions of the bridge-moving-load system. There are some difficulties in modeling and solving the dynamic equation of a moving-mass-bridge coupling system because the dynamic coupling behavior usually changes with time.The governing equation of the coupling system between the bridge and moving mass is formulated using the mode superposition technique and Bernoulli-Euler beam theory. Simulink package is used to build simulation model based on MATLAB software. Compared with ABAQUS solutions, simulation accuracy and efficiency are improved by the models presented. The present simulation model has very wide adaptability. It can not only analyze the problem ofa single moving mass but also deal with multiple moving masses.