Improved Full Vehicle Finite Element Tire Road Noise Prediction

Paper #:
  • 2017-01-1901

Published:
  • 2017-06-05
Abstract:
With the reduction of engine noise in internal combustion engines and the advent of alternative propulsion systems, road noise has become the major source of interior noise in urban and suburban driving in the low frequency range. The challenges of weight reduction, performance improvement and reduced development time call for stronger support of the development process by numerical methods. The long and complex transfer paths from the road surface to the occupants’ ears through tire, chassis, bushings, body, trim and air cavity make such a prediction a non-trivial task. This starts with the tire. Tire manufacturers have a thorough knowledge of their product and the physics involved in its behavior and deploy refined simulation techniques. However, interfacing difficulties between tire simulation and vehicle simulation very often lead to unnecessary losses in accuracy. This paper presents the application to full vehicle finite element simulation of a steady state rolling tire/wheel/cavity finite element model developed in previous work and validated at the component level. Numerical results and test track measurements are compared in the 20-300 Hz frequency range showing good agreement.
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