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Formulation of NVH-Specifications for passenger car tire development Print
Contact: Dipl.-Ing. Torsten Bahnert   

Problem

Tire structure vibrations and vibrations of the air column inside the tire (cavity vibrations) transmitted as structure-borne noise or airborne noise cause a relevant part of the traffic noise and reduce the ride comfort.

rollgeraeusch

Objective


  • allocation of tire parameters to specific eigenmodes
  • adaptation of a tire model for rolling noise simulation by structural adjustment and parameterization
  • derivation of technical specifications for the tire development

Approach


  • measurement of the tire-eigenfrequencies and visualization of the corresponding eigenmodes via laser-vibrometer
  • transmission of the measurement results on a suitable tire model
  • verification of the correlation between the vibration characteristics of the tire and the vehicle interior noise by means of simulation
  • development of a standard method for the forecast of the acoustic behavior of a certain tire/vehicle-combination

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