Dynamic Stiffness Analysis of Advanced Beams


Start Date: 24-Aug-2012 Duration: 24 Months


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Beam theories used in structural and aeroelaticity analysis of an aircraft wing generally represented by stick models do not account for chord-wise deformation at present. This is generally satisfactory for preliminary calculations, but on occasions the line elements used in the stick model can be a severe limitation, particularly for composite wings which exhibit coupling between various modes of deformation. The proposed three dimensional composite beam theory based on the dynamic stiffness method (DSM) and Carrera Unified Formulation (CUF) can overcome this limitation.

DySAAB was born in 2013 and it is a project leaded by Empresa Brasileira de Aeronáutica S.A. (EMBRAER). Politecnico di Torino (MUL2 team) and the City University London were involved in DySAAB for the development of advanced dynamic stiffness theories for beams with the inclusion of cross-sectional deformations in order to investigate free vibration and flutter characteristics of composite wing structures.

MUL2 Investigators

Erasmo Carrera, Alfonso Pagani

Related Papers

Carrera E., Pagani A., Banerjee J.R.. "Linearized buckling analysis of isotropic and composite beam-columns by Carrera Unified Formulation and dynamic stiffness method", Mechanics of Advanced Materials and Structures (2016), 23(9), pp. 1092-1103

Pagani A., Carrera E., Banerjee J.R., Cabral P.H., Caprio G., Prado A.. "Free vibration analysis of composite plates by higher-order 1D dynamic stiffness elements and experiments", Composite Structures (2014), 118, pp. 654-663

Pagani A., Carrera E., Boscolo M., Banerjee J.R.. "Refined dynamic stiffness elements applied to free vibration analysis of generally laminated composite beams with arbitrary boundary conditions", Composite Structures (2014), 110, pp. 305-316

Pagani A., Boscolo M., Banerjee J.R., Carrera E.. "Exact dynamic stiffness elements based on one-dimensional higher-order theories for free vibration analysis of solid and thin-walled structures", Journal of Sound and Vibration (2013), 332, pp. 6104-6127