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Student Number 85323003
Author Chen-Hua Ming()
Author's Email Address No Public.
Statistics This thesis had been viewed 442 times. Download 11 times.
Department Mechanical Engineering
Year 1997
Semester 2
Degree Master
Type of Document Master's Thesis
Language zh-TW.Big5 Chinese
Title Vibration Analysis of Cracked Turbine Blades
Date of Defense
Page Count 53
Keyword
  • blades
  • cracked
  • transfer matrix
  • vibration
  • Abstract This paper studies the dynamic behavior and vibration modes of
    cracked turbine-blade through numerical simulation by transfer
    method . Although the usual turbine blades have complex
    geometric shape , such as a pre-twisted angle , width and depth
    , which all change with the length of blade . But the precision
    of blade's simulation by general beams has been proved well in
    many papers .Therefore , Timoshenko contiuous beam is selected
    in the present thesis . Besides , blade is often connected with
    a flexible disk which induces the vibration of blade . Hence the
    disk's influences in vibration behavior of a blade are also
    considered in this paper . The way of crack-modeling adopts the
    local flexibility matrix , and then the system's governing
    equation is solved by transfermethod . Finally the system's
    natunal frequency and vibration modes can be obtained . This
    paper shows the influences of a crack location and the crack
    sizeon blade's system . The effects of transverse shear
    deformation , rotary inertia and the pre-twisted angle are taken
    into account . It is found that the crack has great influences
    on the dynamic characteristics of the rotating blade .
    Table of Content
    Reference
    Advisor
  • Wang Y.-Z.()
  • Files No Any Full Text File.
    Date of Submission

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