Prediction of dynamic hub forces as a source of structure-borne tire/coarse road noise using a high-fidelity simulation approach
* Presenting author
When optimizing the tire/road structure-borne interior noise, multiple other coupled tire performances need to be simultaneously optimized. Typically, different tire design prototypes are built and tested. However, with the recent advent in virtual product development and the Digital Twin concept, high-fidelity numerical simulation approaches become a viable alternative to the experimental approach. These numerical approaches allow for e.g. design space exploration without the need for building and testing physical tire prototypes. Therefore, in this work the use of a fully predictive nonlinear numerical approach for the prediction of the dynamic contact- and hub forces of a tire rolling over a coarse road surface is described. These predicted hub forces can then be further used to assess the tire/road structure-borne noise performance of a tire. The influence of incorporating tire model nonlinearities as well as the air cavity and rim flexibility on the simulated hub forces is discussed. Furthermore, nonlinear model order reduction and hyper-reduction techniques are applied to greatly reduce the numerical simulation time, being approximately ten times faster than the experimental approach. Finally, a comparison between the predicted hub forces and experimental hub forces is shown, where a sufficient correspondence between both can be observed for design engineering purposes.