Vehicle Vibration Response Subjected to Longwave Measured Pavement Irregularity

The motivation of this work is to develop a spectral method to deal with the vehicle vibration response when subjected to a longwave measured pavement irregularity. For this purpose, the vehicle model vibration is correlated in the frequency domain with the spectral density function of the pavement irregularity, to achieve the system spectral transfer function. Vehicle transfer function and spectral pavement irregularity results are treated in the frequency domain to obtain the vehicle frequency response due to a longwave road evenness input. The results show that, at 120 km/h in an asphalt pavement with ondulation, the first vehicle vibration mode has a significant movement enlargement, due to the pavement irregularity signature, causing passenger vibrational discomfort and identifying location for maintenance.