[1] Junger, M.C., Dynamic behavior of reinforced cylindrical shells in a vacuum and in a fluid, J.Appl.Mech., 3(1954). [2] Galletly, G.D., On the in-vacuo vibrations of simple supported ring-stiffened cylindrical shell, Proc.of the Second U.S.National Congress of Applied Mechanics(1954). [3] Wah, T., Flexural vibrations of ring-stiffened cylindrical shells, J Sound.Vib., 3(1966). [4] Henshell, R.D., B.K.Neale and G.B.Warburton, The natural frequencies of a complex cylindrical shell structures, Applications of Experimental and Theoritical Structural Dynamics 1(1972). [5] Li Long-yuan and Lu Wen-da, Analyses of free vibration and response to turbulent wind of hyperbolic cooling towers with ring stiffeners, Part I, Theoretical Analyses of Ring, IASS, Japan(1986), 9. [6] Garnet, H., and A.Levy, Free vibtations of reinforeced elastic shells, J Appl.Mech., 36(1969). [7] Basdekas, N.L.and M.Chi, Response of oddly-stiffened circular cylindrical shell, J.Sound.Vib.17(1971). [8] Mikulas.M.M.Jr., and J.A.Mcelm, On free vibrations of eccentrically stiffened cylindrical shells and flat plates, NASA, TN-D-3010(1965). [9] Hoppmann, W.H.II, Some characteristies of the flexural vibrations of orthogonally stiffened eylindrical shells, J Acoust.Soc.Am., 30(1958). [10] Patel.J.S., Natural frequencies and strain distribution in a ring-stiffened thick cylindrical shell.J.Acoust.Soc.Am., 47(1970). [11] Dai Shi-qiang, The method of PLK, The Theory and Application in Mechanics of Singular Perturbation, Edited by Chien Wei-zang, Science press(1981).(in Chinese). [12] Li Long-yuan, Stability and vibration analyses of arbitrary varying thickness plates, Shanghai Mechanics(1986).(in Chinese). [13] Li Long-yuan, Vibration analysis of moderate-thick plates with slowly varying thickness, Appl.Math.and Mech.7, 7(1986), 655-662. [14] Flugge, W., Stress in Shell, Springer-Verlag, (1960). [15] Li long-yuan and Lu Wen-da, Analyses of free vibration and response to turbulent wind of hyperboli cooling towers with stiffeners, Part Ⅱ:Numerical Analyses of Shell, IASS, Japan (1986), 9. |