Dynamic response analysis of rotating composite-VEM thin-walled beams incorporating viscoelastic materials in the time domain

Sungsoo Na, Jaeyong Park, Chul H. Park, Moon K. Kwak, Jae Hong Shim

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

This paper addresses the analytical modeling and dynamic response of the advanced composite rotating blade modeled as thin-walled beams and incorporating viscoelastic material. The blade model incorporates non-classical features such as anisotropy, transverse shear, rotary inertia and includes the centrifugal and coriolis force fields. The dual technology including structural tailoring and passive damping technology is implemented in order to enhance the vibrational characteristics of the blade. Whereas structural tailoring methodology uses the directionality properties of advanced composite materials, the passive material technology exploits the damping capabilities of viscoelastic material (VEM) embedded into the host structure. The VEM layer damping treatment is modeled by using the Golla-Hughes-McTavish (GHM) method, which is employed to account for the frequency-dependent characteristics of the VEM. The case of VEM spread over the entire span of the structure is considered. The displayed numerical results provide a comprehensive picture of the synergistic implications of both techniques, namely, the tailoring and damping technology on the dynamic response of a rotating thin-walled beam exposed to external time-dependent excitations.

Original languageEnglish
Pages (from-to)1139-1148
Number of pages10
JournalJournal of Mechanical Science and Technology
Volume20
Issue number8
DOIs
Publication statusPublished - 2006 Aug

Keywords

  • GHM Method
  • Passive Damping
  • Thin-Walled Composite Beam
  • Viscoelastic Material

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering

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