Hi, vehicular dynamics is the area I am currently working on. check out my publication titled "dynamic loads on prefabricated modular building unit during transportation"
I deal with 2D and 3d pitch plane and whole vehicle model respectively and am working on quantifying vehicles vertical vibration characteristics.
i am currently solving the system with MATLAB and have these model ready with me.
I am sure that I will be able to help you in your work. eagerly waiting to hear from you.
warm regards