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An aeroelastic beam finite element based on Euler-Bernoulli beam theory and two-dimensional unsteady aerodynamics is presented. Based on the flexural-torsional equations of motion of the wing the finite element formulation is provided by means of their weak form, taking into account the presence of trailing edge control surfaces that are considered flexible. Each aeroelastic beam presents transverse and rotation displacements due to bending and torsion of the wing box, torsion of the control surface, and the aerodynamic lag state. The developed finite element model is validated with literature and numerical flutter results of wings with and without control surfaces. [ABSTRACT FROM AUTHOR]

The article presents an analytical theory for multilayered composite beams subjected to transverse uniformly distributed loads. The formulation is based on a layerwise model characterized by third-order approximation of the axial displacements and fourth-order approximation of the transverse displacements. The layerwise kinematical model is rewritten in terms of generalized variables. The beam equilibrium equations, expressed in terms of stress resultant, allow writing the boundary value governing problem. The layerwise fields are obtained by postprocessing steps. The main advantage is to ensure the accuracy level associated to the layerwise formulations preserving the computational efficiency of the equivalent-single-layer theories. [ABSTRACT FROM PUBLISHER]

The influence of the magnetic configuration on the behavior of magneto-electro-elastic bimorph beams is analyzed by using a boundary element approach. The problem is formulated by using the generalized displacements and generalized tractions. The boundary integral equation formulation is obtained by extending the reciprocity theorem to magneto-electro-elastic problems; it is numerically implemented by using the boundary element method multidomain technique to address problems involving nonhomogeneous configurations. Results under different magnetic configurations are compared highlighting the characteristic features of magnetopiezoelectric behavior particularly focusing on the link between interlaminar stress and magnetic induction. [ABSTRACT FROM AUTHOR]