Static and dynamic analysis of wind turbine blades using the finite element method

The dynamic stability of a rotating pre-twisted asymmetric cross-section Timoshenko beam subjected to lateral parametric excitation

“…(17) is substituted into Eqs. (5), (6), (11) and (13) and all the elements are assembled. Then the global matrix forms of the kinetic and potential energies of the beam are written, respectively, as…”

“…Chazly [13] proposed a three-dimensional analytical model to compute the deflection, stresses and eigenvalues in rotor blades using a bending triangular plate finite element. Choi and Chou [14] proposed the modified differential quadrature method to study vibration analysis of elastically supported turbo machinery blades.…”

Vibration Analysis of Rotor Blades of a Farm Wind-Power Plant

“…In this regard, El Chazly [6] carried out static and dynamic analysis of a tapered and twisted blade but with constant chord length and symmetric aerofoil-shaped crosssections of NACA 0015 series. Maalawi and Negm [7] formulated and applied appropriate optimisation model for wind turbine design, which strongly was simplified by modelling symmetric aerofoil-shaped cross-sections as circle ones and by neglecting twist angle.…”

Dynamic stability of a rotating asymmetric cross-section blade subjected to an axial periodic force

“…Steinman et al [10] described for a pretwisted rod, in which torsional and exural e ects are coupled, both vibration and buckling behavior by a pair of fourth-order linear ordinary di erential equations. Chazly [11] proposed a three-dimensional analytical model to compute the de ection, stresses, and eigenvalues in the rotor blades using a bending triangular plate ÿnite element. Choi and Chou [12] proposed the modiÿed di erential quadrature method to study vibration analysis of elastically supported turbo machinery blades.…”