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Publicações
Valido, A.J., Cardoso, J.B. e Castro, J.A. (2009), “Optimal design of composite laminated thin-walled cross-sections”, Proceedings of the 8th World Congress on Structural and Multidisciplinary Optimization (WCSMO-8), 1-5 Junho, LNEC, Lisboa, Portugal.
The aim of this paper is to perform optimal design of cross-section properties of thin-walled laminated composite beams. These properties are expressed as integrals based on the cross-section geometry, on the warping functions for torsion, shear bending and shear warping, and on the individual stiffness of the laminates constituting the cross-section. The finite element method is used in discretizing the theory. For design sensitivity calculations, the cross-section is modelled throughout design elements. Geometrically, these elements may coincide with the laminates that constitute the cross-section. The developed formulation is based on the concept of adjoint structure method, which suffers a specific adjoint warping for each of the properties. It can be applied in a unified way to open, closed or hybrid cross-sections. Design optimization is performed by nonlinear programming techniques. Laminate thickness and lamina orientations are considered as design variables.
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