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Thursday, July 11 • 09:20 - 09:40
STUDY ON OPTIMIZING LOW FREQUENCY VIBRATION PARAMETERS OF UNDERWATER ARC PLATE

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For the underwater shell structure of warship, the low-frequency structural vibration caused by surface fluid excitation or mechanical excitation will lead to underwater acoustic radiation and affect the acoustic stealth performance of warship. Aiming at the underwater plate structure of naval ships, the arc plate structure is proposed within the acceptable range of the overall profile, and the function relationship between the arc and thickness of the plate is constructed under certain weight constraints. In order to reduce the excitation response of arc plate structure, the finite element method (FEM) is used to analyze the modal frequency change of arc plate under different parameters combination, taking into account the influence of fluid resistance performance, and to obtain the optimum arc and thickness of the plate when the stiffness is optimal.

Moderators
avatar for Simon Jones

Simon Jones

Associate Professor, Rose-Hulman Institute of Technology
Professional interests include undergraduate engineering education, finite element modeling, ground-borne vibrations, vibrations of musical instruments, and dynamics of toys.
GM

Guilhem Michon

Professor, ISAE-SUPAERO

Authors

Thursday July 11, 2019 09:20 - 09:40 EDT
St-Laurent 7
  T07 Struct. dyn. & nonlin. vib., RS03 Struct ac & vibr