Validation of Computer Simulations of Vehicle Dynamics

This paper examines the validation process for computer simulations of ground vehicle dynamics. Validation in this context may be defined as the process of gaining confidence that the calculations yield useful insights into the behavior of the simulated vehicle. It is our view that this process requires three separate questions to be addressed:

• Is the model appropriate for the vehicle and maneuver of interest?
• Is the simulation based on equations that faithfully replicate the model?
• Are the input parameters reasonable?

This paper addresses each of these questions, mainly from an analytical point of view. The paper then addresses strengths and weaknesses of vehicle testing as part of the validation process.