| Summary: | 碩士 === 國立中央大學 === 機械工程學系 === 84 === The article is proposed to derive a hollow conical beam
finite element formulation especially for large rotor. The
shape functions are obtained from the homogeneous solution of
the governing equation neglecting dynamic effects. Four
illustrative examples demonstrate the performance of this
element, and allow comparisons of results with those obtained by
elements derived from Greenhill, Bickford and Nelson''s
formulations based on polynomial shape function. As the
result shown, when the taper gets steeper or
complicated,the rate of convergency is increasing. And the
effect of gyroscopic donot have much influence on rate of
convergency.
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