THEORETICAL CALCULATIONS FOR RADIATION FROM LOBAR MODES OF CYLINDRICAL SHELLS UNDER POINT LOADING.
Technical rept. no. 9,
J G ENGINEERING RESEARCH ASSOCIATES BALTIMORE MD
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The anisotropic shell theory of Flugge offers a simplified approach for computing the stiffness characteristics of cross stiffened, ring stiffened, and sandwich cylindrical shells. Useing this structural theory as a basis, the vibration and sound radiation from stiffened and sandwich cylindrical shells under random loading was analyzed in a previous report AD-286 334. The water loading was brought into the problem by use of the classical infinite shell approach. Either the infinite shell equations or the more accurate Laird-Cohen technique can be used to calculate the far field radiation from the modes with primarily radial displacement once the modal velocity amplitude is obtained from the radiation loading and elastic characteristics. In this paper the approach outlined above is applied to cylindrical shells under concentrated point loading. Author