Andrea Stella
Frequency-Based Substructuring Decoupling for Tire Characterization.
Rel. Stefano Alberto Malan, Domenico Minervini. Politecnico di Torino, Master of science program in Mechatronic Engineering, 2022
Abstract
Due to the vehicle electrification trend and the consequent phasing out of internal combustion engines, tire-road interaction is nowadays one of the main contributors to inner cabin noise. To handle the ever-increasing number of components that contribute to noise, the current industry trend is to characterize the full vehicle Noise, Vibration and Harshness (NVH) profile through the virtual assembly of various subcomponents. The level of prediction of the current coupling methodology is strictly dependent on the quality of information at the interface of each subcomponent. Furthermore, when determining realistic component interface transfer functions, especially in real operational conditions, the significant difference between experimental measurements and finite element models is an increased difficulty.
Noise, positioning errors, inaccessibility of such locations and difficulties in recreating some operational conditions are the primary causes in tests, therefore characterizing the behaviour of tires, under different conditions (static, rolling) is of primary interest
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