FINITE ELEMENT ANALYSIS OF COMPRESSOR BLADES UNDER EXTENSION, BENDING, AND TORSION LOADS

Document Type : Original Article

Authors

Egyptian Armed Forces.

Abstract

ABSTRACT
The objective of this research is to develop a finite element model for the analysis of the
dynamic as well as the static response of a compressor blade made of composite
materials subjected to extension, transverse, and torsion loads. The equation of motion
is derived based on the variation technique with the principle of the total potential
energy of a laminated fiber reinforced structures with different fiber orientation angles.
The formulation is based on the classical laminate theory and the warping effect is
taken into consideration. A one dimensional linear isoperimetric element with Lagrange
and hermit cubic shape function are used to model the axial and transverse
deformation. A two end nodes and one intermediate node as well is implemented for
modeling the torsion deformation. The bending – torsion and axial coupling are
introduced in the stiffness and mass matrices. The obtained results of the present
model are compared to the available finite element and analytical results of others
investigators, a good agreement is generally obtained.

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