Copy of Simulating the Response of External Stores on Aircraft Using Linear and Nonlinear Vibroacoustics.
Abstract Not Provided
Ross, Michael↗
Engineering topics
Rouse, Jerry W
Publications and source records attributed to Rouse, Jerry W.
Analytical modeling of the acoustic field during a direct field acoustic test.
The acoustic field generated during a Direct Field Acoustic Test (DFAT) has been analytically modeled in two space dimensions using a properly phased distribution of propagating plane waves. Both the pure-tone and broadband acoustic field were qualitatively and quantitatively compared to a diffuse acoustic field. The modeling indicates significant non-uniformity of sound pressure level for an empty (no test article) DFAT, specifically a center peak and concentric maxima/minima rings. This spatial variation is due to the equivalent phase among all propagating plane waves at each frequency. The excitation of a simply supported slender beam immersed within the acoustic fields was also analytically modeled. Results indicate that mid-span response is dependent upon location and orientation of the beam relative to the center of the DFAT acoustic field. For a diffuse acoustic field, due to its spatial uniformity, mid-span response sensitivity to location and orientation is nonexistent.
36 MATERIALS SCIENCE↗
Analytical modeling and experimental characterization of the acoustic field during a direct field acoustic test.
No abstract prepared.
99 GENERAL AND MISCELLANEOUS↗
Developing laboratory simulations for reentry-like pressure loading environments.
No abstract prepared.
99 GENERAL AND MISCELLANEOUS↗