Study on coupled vibration of ring-stiffened cylindrical shells subjected to hydrostatic pressure using wave propagation method

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Journal of Vibration and Shock ›› 2014, Vol. 33 ›› Issue (21) : 142-147.

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Study on coupled vibration of ring-stiffened cylindrical shells subjected to hydrostatic pressure using wave propagation method

LIANG Bin1, LI Rong2, LIU Xiaowan1, NODA Nao-Aki2, XU Hongyu1

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Abstract

Based on the Flügge’s shell theory, coupled vibration characteristic of submerged ring-stiffened cylindrical shell under hydrostatic pressure is examined. By means of conversion switch on axial wave number, the coupled frequency of submerged FG cylindrical shell with various boundary conditions is obtained, using wave propagation method and Newton method. Results are compared to known solutions, where these solutions exist. The natural frequency of ring-stiffened cylindrical shell is studied. The effects of hydrostatic pressure, size and number of rib and boundary condition on the natural frequencies of submerged ring-stiffened cylindrical shell are illustrated by examples.

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ring-stiffened / hydrostatic pressure / cylindrical shell / natural frequency

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LIANG Bin;LI Rong;LIU Xiaowan;NODA Nao-Aki;XU Hongyu. Study on coupled vibration of ring-stiffened cylindrical shells subjected to hydrostatic pressure using wave propagation method[J]. Journal of Vibration and Shock, 2014, 33(21): 142-147