作者: Mustafa Sabuncu
DOI: 10.2514/3.9102
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摘要: This paper presents a finite element model for the vibration analysis of pretwisted uniform cross-sectional blading. The variation pretwist along blade length can be in linear or trigonometric increments. dynamic stiffness free is derived from strain and kinetic energies using Lagrange's equation. cubic polynomial approximation displacements, two principal directions, assumed. method gives excellent results with use only small number elements. Good agreement found experimental theoretical other investigators straight linearly blades. comparison between nonlinearly beams shows large deviations when angle increases.