Study on Vibration Characteristics in Terms of Airfoil Cross Sectional Shape by using Co Rotational Plane Beam Transient Analysis
In this paper, vibration characteristics in terms of the airfoil cross sectional shape was examined by using the EDISON co rotational plane beam transient analysis. Co Rotational plane beam analysis is appropriate for large rotation and small strain. Assuming aircraft wing as a cantilevered beam, natural frequencies of each airfoil cross sectional shape were estimated using VABS program and fast Fourier transformation(FFT) VABS conducts finite element analysis on the cross section including the detailed geometry and material distribution to estimate the beam sectional properties. Under the same airfoil geometric configuration and material selection, variation of material induced difference in the deflection and natural frequencies. It was observed that variation of the natural frequency was dependent on variation of the airfoil shape and material.