Vibrational analyses of cracked pre-twisted blades

L. W. Chen, C. H. Jeng

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

A finite element model is utilized to analyze the vibrational behavior of a pre-twisted rotating blade with a single edge crack. This model can satisfy both geometric boundary conditions and natural boundary conditions of the blade. The effects of the transverse shear deformation, rotary inertia and the pre-twisted angle are taken into account. The influences of the crack location and the crack size on natural frequencies, buckling loads and dynamic instability regions are studied. It is found that a crack has great influences on these dynamic characteristics of the rotating blade.

Original languageEnglish
Pages (from-to)133-140
Number of pages8
JournalComputers and Structures
Volume46
Issue number1
DOIs
Publication statusPublished - 1993 Jan 3

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Modelling and Simulation
  • Materials Science(all)
  • Mechanical Engineering
  • Computer Science Applications

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