Acoustic sensitivity analysis of a tractor cab model

Acoustic sensitivity of a vehicle body was defined as the interior sound pressure due to a unit force applied to the body, which is a very useful characteristic for evaluating a vehicle noise, vibration and harsh performance. In this paper, a structural-acoustic model of a model tractor cab for finite element analysis was established, and the acoustic modal and the coupled structural-acoustic modal were analyzed. Then the noise sensitivity at the position of the driver's ears was calculated caused by the vibration at the suspension attachment positions according to the cab structural-acoustic characteristic and the analysis method of acoustic sensitivity.