Acoustic pressure load conversion method to vibration spectra

This work presents a fully‑parametric finite‑element methodology for shape optimization of aerospace panel structures under acoustic loading by converting an acoustic pressure spectrum into an equivalent vibration spectrum. A 1 psi uniform pressure and 1 g negative base acceleration are applied to a parametric panel model using mode‑superposition and mode‑acceleration techniques, respectively, to compute peak displacement responses. Their ratio defines a space‑ and frequency‑independent conversion factor, enabling substitution of expensive acoustic tests with shaker‑table vibration tests. The approach integrates automated mesh generation, sensitivity‑driven design iteration, and stress‑margin optimization to deliver lightweight, fatigue‑resilient panel designs.

Read full publication here