| 摘要 |
The invention concerns a method for forecasting comfort (noise, vibrations) in a vehicle equipped with a test-mounted assembly in a selected position, said vehicle running at a given speed V on a smooth-surface running means enabling to reach a maximum equivalent speed Vmax of the vehicle (Vmax being higher than the given speed V), said method consisting in establishing a global transfer function of the vehicle equipped in the same position with a reference-mounted assembly comprising a tyre and its mounting wheel, said tyre comprising N substantially identical defects uniformly distributed over the circumference of the assembly, said defects being selected to energize the vehicle in a frequency range from a minimum frequency Fmin to a maximum frequency Fmax during a smooth-surface running. After measuring the forces resulting at the wheel centre of the test-mounted assembly running on the same running means, the method consists in multiplying said forces by the transfer function obtained with the reference-mounted assembly to obtain a noise and vibration forecast in the vehicle running at speed V, said vehicle being equipped with the test-mounted assembly in the selected position.
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