On homogenized ribbed-panel model for SEA analysis

This paper presents an investigation into a recent model of homogenized rib-stiffened panels. An equivalent panel model is developed from the skin and the stiffeners of the panel. In this case a space-harmonic-based approach is used, and first-order shear deformation theory is employed to account for the wavefield's in-plane/out-of-plane coupling effect in the skin. The panel's stiffeners interact with the skin through internal forces and moments at the connections. A periodic FE mesh is then used to compute the wave dynamics and the results are used to develop the required terms to solve for vibro-acoustic results in Statistical Energy Analysis (SEA). This process is used to predict the vibro-acoustic response of an aircraft structure. The SEA results are compared with detailed FE models of the rib-stiffened aircraft structure.