Abstract: For speeding up vehicle test and validation cycles and reducing test cost, a virtual load generation method based on multi-body dynamics and its data processing procedure are adopted, a test bench for road simulation of suspension system is built, and durability tests based on both virtual load and the real load of proving ground are conducted respectively. The comparative analysis on the mode and occurring time of suspension part failures in durability tests verifies the effectiveness of suspension road simulation test method based on virtual load.

Key words: virtual load, road simulation, suspension system, iteration