Acoustic Modal Characteristics of The Passenger Compartment-Trunk Coupled by Holes

구멍에 의하여 연성 된 차실-트렁크 계의 음향모드 특성

Acoustic modal characteristics are investigated on the passenger compartment and trunk coupled system. One-dimensional theoretical model is proposed and the validity of the model is verified by experiment on a simplified compartment model. The theoretical model identifies the occurrence of a new low frequency compartment mode, which does not exist in the uncoupled passenger compartment. The effect of the hole size on the compartment modes is analytically and experimentally examined.