Towards a high-fidelity simulation approach for predicting coarse road dynamic tire/road contact forces using an ALE-formulation and a-priori nonlinear hyper-reduction

© Proceedings of ISMA 2018 - International Conference on Noise and Vibration Engineering and USD 2018 - International Conference on Uncertainty in Structural Dynamics. All rights reserved. Currently no industrially applicable fully predictive high fidelity numerical approach is available in literature to model a car tire rolling over a coarse road surface. Therefore, a fully predictive high fidelity numerical approach for the calculation of tire/road contact forces and hub forces during rolling with a constant angular velocity over a coarse road surface is presented in this work. A nonlinear structural finite element (FE) tire model in combination with an ALE formulation is used to describe both the rotational tire dynamics as well as the coarse road excitation. No measurement data taken from a physical tire is used in the proposed approach, thus keeping it fully predictive. A novel nonlinear projection-based model order reduction (MOR) technique is applied to the proposed approach to greatly reduce the associated computational costs. The proposed predictive high fidelity approach is shown to predict dynamic tire/road contact forces and hub forces with good accuracy, thereby showcasing its use in virtual tire design exploration and design assessment.status: publishe