Dynamic stability of a shaft-disk system with flaws

Der Ming Ku, Lien Wen Chen

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


The dynamic stability behavior of a cantilever shaft-disk system with flaws and subjected to axial periodic forces is studied by the finite element method. In the present analysis the effects of translational and rotatory inertia, gyroscopic moments, bending and shear deformation have been taken into consideration. Four parameters are employed to characterize the damaged zone: location, size, effective bending and shear stiffness of the damaged region. Numerical results show that due to the presence of the damaged zone, the regions of dynamic instability are shifted closer to the dynamic load factor axis and parametric resonance may occur at lower disturbance frequencies. Also, as the rotational speed increases, the sizes of the regions of dynamic instability will be enlarged, and therefore, the system becomes more unstable.

Original languageEnglish
Pages (from-to)305-311
Number of pages7
JournalComputers and Structures
Issue number2
Publication statusPublished - 1992 Apr 17

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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