Vibration of submerged and ring stiffened conical shells

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Journal of Vibration and Shock ›› 2014, Vol. 33 ›› Issue (14) : 25-32.

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Vibration of submerged and ring stiffened conical shells

CHEN Mei-xia，DENG Nai-qi，ZHANG Cong，WEI Jian-hui

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Abstract

Flügge equations of motion and power series solution were used to study the vibrational characteristics of submerged and ring stiffened conical shells. The ring stiffeners were modeled by a smeared approach. Fluid loading of water was taken into account by dividing the shell into narrow strips which were considered to be locally cylindrical shell. The characteristics of natural vibration and forced vibration of the shells were analyzed. Numerical and analytical results are in good agreement. The influence of fluid loading and ring stiffeners and semi-cone angle and the boundary conditions on vibrational characteristics of shells were studied. The results show that the fluid loading and ring stiffeners affect as added mass and damping on conical shells.

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ring stiffened conical shells / fluid loading / power series / smeared approach

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CHEN Mei-xia;DENG Nai-qi;ZHANG Cong;WEI Jian-hui. Vibration of submerged and ring stiffened conical shells[J]. Journal of Vibration and Shock, 2014, 33(14): 25-32