In this thesis, a computer program is developed for the dynamic analysis of the vehicle modeled as a multibody system. The program is written in MACSYMA, a symbolic computation language, to produce FORTRAN subroutines necessary for numerical postprocess. The FORTRAN subroutines contain symbolic equations formulated using relative joint coordinate. And to get the most numerical efficiency, the symbolic equations are arranged well. The numerical postprocessor uses the hybrid method to solve the governing equations.
The vehicle model has 15 degrees of freedom, and tire model is based on that of DADS, a commercial 3-dimensional dynamic analysis package. The dynamic simulation of the vehicle model is executed under four conditions. The results are compared with those of DADS. Because of the tire model, the two results do not agree exactly.
