Dynamic response analysis of rotating functionally graded thin-walled rotating blades exposed to steady temperature and external excitation

Byung Young Oh, Seog Ju Cha, Sungsoo Na, Liviu Librescu

Research output: Contribution to journalConference article

Abstract

This paper is devoted to the thermoelastic modeling and dynamic response of pretwisted rotating blades made of functionally graded ceramic-metal based materials. The blade is modeled as a non-uniform thin walled beams fixed at the hub at a setting angle. The blade is rotating with a constant angular velocity and is exposed to a steady temperature field as well as external excitation. Moreover, the effect of the temperature field and is impacted by a pressure pulse. The material properties are graded in the blade thickness direction according to a simple power law distribution. The numerical results highlight the effects of the volume fraction, temperature gradient, taper ratio, setting angle and pre-twisted angle on the dynamic response of bending-bending coupled beam characteristics, which are provided for the case of a biconvex cross section, and pertinent conclusions are outlined.

Original languageEnglish
Pages (from-to)5720-5730
Number of pages11
JournalCollection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
Volume8
DOIs
Publication statusPublished - 2005
Event46th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference - Austin, TX, United States
Duration: 2005 Apr 182005 Apr 21

ASJC Scopus subject areas

  • Architecture
  • Materials Science(all)
  • Aerospace Engineering
  • Mechanics of Materials
  • Mechanical Engineering

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