FREQUENCIES AND MODE SHAPES FOR AXISYMMETRIC VIBRATION OF SHELLS.
ARMY MATERIALS RESEARCH AGENCY WATERTOWN MASS MATERIALS ENGINEERING DIV
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This report treats the axisymmetric vibration of thin elastic shells. Estimates of natural frequencies and mode shapes are obtained for a general class of thin shells by applying the approximations obtained in a previous paper by one of the authors. Numerical results are obtained for ellipsoidal shells, and one new theoretical result is found. Author