Simulation of the impact of seats on interior noise field in passenger compartment cavity

Car seats are important component to the interior acoustic field, their existence and sound absorbing performance could affect the acoustic field significantly. A light bus was selected as the research object in this paper, the effect of seats to the interior acoustic filed was analyzed contrastively. In addition, based on the practical situation of car design, the acoustic models without seats, with seats neglected their sound absorption, and with seats considered their sound absorption in the passenger compartment cavity were established. Based on these models, the acoustic mode in the passenger compartment was computed, and acoustic-structural coupling analysis was conducted, the impact of seats on the interior acoustic field was analyzed.