Vibratory Response and Acoustical Radiation of a Water-Loaded,Turbulence-Excited Plate-Cavity System--Option 6,

摘要

This report presents a method and computer program for calculating certain spectral quantities for the vibration as well as the external (half-space) and internal (cavity) acoustic radiation of a plate-cavity system represented as a rectangular parallelepiped. The upper surface of the plate, lying outside of the cavity, is excited by boundary layer turbulence. The lower surface of the plate covers the cavity. The walls of the cavity are either all rigid or uniformly nearly absorbtive, i.e., nearly all rigid. The plate is thin, flat, flexible, isotropic, rectangular, and finite and is either simply supported or clamped-clamped at its boundaries which are contiguous with an infinite, rigid, planar, baffle. The fluid at the boundaries of both sides of the plate, external and internal to the plate cavity system, may consist of any combination of heavy (or dense) and light fluid media. Thus, the plate is acoustically coupled to the external flow field and to the field within the cavity.