Study on stability of submerged ring-stiffened cylindrical shells with functionally graded material

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Journal of Vibration and Shock ›› 2017, Vol. 36 ›› Issue (13) : 80-85.

LIANG Bin1, CHEN Jin-xiao1, LI Rong 2, XU Hongyu1

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Abstract

The stability of submerged ring-stiffened cylindrical shells based on functionally graded material(FGM) is studied in this paper. According to Flügge theory and orthotropic theory, the coupled vibration characteristic equations of submerged ring-stiffened FGM cylindrical shells is derived by wave method. The natural frequency of submerged ring-stiffened FGM cylindrical shells is obtained by the Newton iteration method, the critical pressure of submerged ring-stiffened FGM cylindrical shells is obtained by linear fitting at last. The present analysis is validated by comparing results with those in the literature. By numerical examples, the effects of material component, volume fraction, shell size, ring size and number on the critical pressure of submerged ring-stiffened FGM cylindrical shell are illustrated.

Key words

hydrostatic pressure, ring-stiffened, functionally graded material, cylindrical shell, linear fitting, / critical pressure

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LIANG Bin1, CHEN Jin-xiao1, LI Rong 2, XU Hongyu1. Study on stability of submerged ring-stiffened cylindrical shells with functionally graded material[J]. Journal of Vibration and Shock, 2017, 36(13): 80-85

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