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Durability simulation with chassis control systems

Model depth for a handling maneuver
: Brandes, S.; Hilf, K.-D.; Möller, R.; Melz, T.


SAE International Journal of Passenger Cars. Mechanical Systems 9 (2016), Nr.3, S.1289-1296
ISSN: 1946-3995
ISSN: 1946-4002
Fraunhofer LBF ()

This paper makes a contribution toward a more efficient chassis durability process for the development of passenger cars, in which the simulation of relevant load data is a time-consuming part. This is especially due to the full vehicle model complexity which is usually determined by the demands of rough road simulations. However, for the load calculation on a racetrack, time saving model approaches that are more simplified might be sufficient. Our investigation comprises two levels of vehicle model complexity: one with all chassis parts modeled in a multibody system environment and one characteristic curve based model in an internal simulation environment. Both approaches consider an original chassis control system as a Software-in-the-Loop model. By the evaluation of real-world experiments the main influence factors in terms of durability are demonstrated. With the help of those highly sensitive durability criteria the measurement and simulation results are then compa red. This discussion demonstrates that both model approaches show an almost excellent performance, whereas the computation times differ significantly. This combination - a durability relevant handling maneuver with the use of an original chassis control system - has not been previously considered.