Static and Dynamic Response of an Aluminum Alloy Panel Having a Central Opening with Combined in-Plane Biaxial Static Loading and Acoustic Excitation

摘要

The static and dynamic response of an aluminum alloy panel, having a central opening, subjected to combined in-plane static tensile loading and acoustic excitation is described. The test specimens were tested in an acoustic tunnel to maximum sound pressure level of 145 dB with in-plane uniaxial and biaxial tensile loading. The local buckling of the free edge of the opening and the plate vibration characteristics were also investigated. The nonlinear behavior of the plate having a central opening was examined under sinusoidal and broad band random excitation. Crack propagation data from the high stress concentration zone at the tips of the opening under acoustic excitation are presented.