Hi, I am generating synthetic images from the perspective of a moving vehicle, i.e. a camera mounted on a vehicle driving through a computer generated scene. Now i want to simulate the motions of the vehicle body that result from road roughness (bumps, patches). I modeled my road roughness as vertical displacement over time. What I am looking for is the frequency of the bounces and pitch motions that the vehicle body experiences as a result of driving over the road profile (plotted it looks like this http://imgur.com/0AiwnBy). Due to time constraints and general inability, I can not model a complete suspension system. Instead, I think a quarter vehicle model should suffice (see here: http://imgur.com/VhdJMBn). So the model should consist only of unsprung mass, sprung mass and suspension stiffness All that I have found so far goes way beyond what I need. I am only interested in an approximately correct movement of the vehicle body, the other effects on vehicle dynamics are not relevant for me. So my questions is: Is the general idea okay in that I would get some approximately accurate results? And if so, are simple equations for springs enough, or do I need something more sophisticated?