CATAPANO MONTEMURRO, Anita; DESMORAT, Boris; VANNUCCI, Paolo

doi:10.1007/s10957-014-0693-5

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CATAPANO MONTEMURRO, Anita

DESMORAT, Boris
Institut Jean Le Rond d'Alembert [DALEMBERT]

VANNUCCI, Paolo
Laboratoire de Mathématiques de Versailles [LMV]

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Journal of Optimization Theory and Applications. 2015p. DOI 10.1007/s10957-014-0693-5

Springer Verlag

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In this paper, we deal with the problem of optimizing the anisotropy distribution of a laminated structure in order to maximize, simultaneously, its stiffness and strength. For these two objectives, two functionals are considered: the compliance as a measure of the plate stiffness and a laminate-level failure index as a measure of the strength. To solve this optimization problem we used a two-step hierarchical strategy: in the first step the aim is to find the best distribution of the stiffness and strength anisotropic tensors of an equivalent homogenized plate, while in the second one the objective is to find at least one laminate lay-up satisfying the optimal properties obtained as result of the first step. The polar formalism has been used to represent both the stiffness and strength tensors and allowed us to find analytical solutions to the local minimizations of the two functionals. A test case is finally presented to show the effectiveness of the proposed strategy.< Réduire

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Stiffness and Strength Optimization of the Anisotropy Distribution for Laminated Structures

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