Optimal design of dynamic absorbers on vibration and noise control of the fuselage

Yii Mei Huang, Chun Cheng Chen

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

Optimum design of dynamic absorbers for reducing the vibration and the interior noise of an aircraft's fuselage is studied. Herein, a thin, elastic cylindrical shell is adopted as a simple model of the fuselage. The sound source of the noise in the acoustic field comes from the vibration of the shell. Several dynamic absorbers are then attached to the shell for vibration and noise control. The vibration of the shell and its interior sound pressure, caused by the propellers or the engines are formulated. Optimum design of the absorbers is studied for obtaining the minimum vibration of the fuselage or the minimum noise level in the cylindrical cavity. From the numerical results, the absorbers are found to be effective for vibration and noise control of the fuselage. Some general guidelines on optimum absorber design are also offered in conclusion.

Original languageEnglish
Pages (from-to)691-702
Number of pages12
JournalComputers and Structures
Volume76
Issue number6
DOIs
StatePublished - 30 Jul 2000

Keywords

  • Cylindrical shell
  • Fuselage
  • Optimum dynamic absorbers
  • Passive control
  • Vibration and noise control

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