Papers Published

  1. Dowell, Earl H., MASTER PLAN FOR PREDICTION OF VEHICLE INTERIOR NOISE., AIAA Journal, vol. 18 no. 4 (1980), pp. 353 - 366 .
    (last updated on 2007/04/10)

    A general theory of noise transmission analysis is now available which includes the (modal) mass (inertia), stiffness (compliance), and damping (absorption) of structural walls and acoustic cavities. Efficient and accurate numerical procedures have been developed for computing acoustic natural modes and interior noise levels due to prescribed wall motion for acoustic cavities of arbitrary geometry. The results have been verified by comparison with experiment. Good agreement between theory and experiment for the total acoustoelastic problem has been obtained for simple geometries. That is, from prescribed exterior sound levels, structural wall motion and interior sound levels have been calculated which are in good agreement with experiment. Current efforts are being directed toward the acoustoelastic problem for more complicated geometries including the effects of double walls.