A Simplified Approach for Roadway Slope Development in Vehicle Simulation

A simplified approach for creating road surface elevation information for simulation of vehicle vertical response to roadway unevenness is presented. Roadways for single and parallel track simulations as well as averaged roads for variable velocity simulation are developed. Sets of correctly chosen random roadway slopes are appropriately averaged for the variable velocity simulation. The procedure generates approximately "white" slope spectral density roadways in the frequency ranges of interest and the elevation profiles are representative of average road profiles. The method is quite simple in practice yet suffices for many parameter studies of suspensions and the like.