A new paradigm for the optimum design of variable angle tow laminates
Chapitre d'ouvrage scientifique
In this work the authors propose a new paradigm for the optimum design of variable angle tow (VAT) composites. They propose a generalisation of a multi-scale two-level (MS2L) optimisation strategy already employed to solve optimisation problems of anisotropic structures characterised by a constant stiffness distribution. In the framework of the MS2L methodology, the design problem is split into two sub-problems. At the first step of the strategy the goal is to determine the optimum distribution of the laminate stiffness properties over the structure, while the second step aims at retrieving the optimum fibres-path in each layer meeting all the requirements provided by the problem at hand. The MS2L strategy relies on: a) the polar formalism for describing the behaviour of the VAT laminate, b) the iso-geometric surfaces for describing the spatial variation of the stiffness properties and c) an hybrid optimisation tool (genetic and gradient-based algorithms) to perform the solution search. The effectiveness of the MS2L strategy is proven through a numerical example on the maximisation of the first buckling factor of a VAT plate subject to both mechanical and manufacturability constraints.
Files in this item
Showing items related by title, author, creator and subject.
Thermo-mechanical homogenisation of cork-based composites: variability in materials properties and propagation of uncertainty Conférence invitéeDELUCIA, Marco; CATAPANO, Anita; MONTEMURRO, Marco; PAILHES, Jérôme (2019)The last decades have been characterized by a growth of raw material demand, in particular due to the consumerism in developed countries and to the fast industrialization of emerging economies. Nowadays, with the aim to ...
Article dans une revue avec comité de lectureDELUCIA, Marco; CATAPANO, Anita; MONTEMURRO, Marco; PAILHES, Jérôme (SAGE Publications, 2019)In this paper, a general numerical homogenisation scheme coupled with an efficient modelling strategy for predicting the effective thermoelastic properties of cork-based agglomerates is presented. In order to generate a ...
Communication avec acteMONTEMURRO, Marco; CATAPANO, Anita (2016)The present paper focuses on the development of a multi-scale design strategy for the optimisation of variable angle stiffness laminates. The main goal consists in proving that it is possible to design structures having ...
A multi-scale approach for the simultaneous shape and material optimisation of sandwich panels with cellular core Article dans une revue avec comité de lectureMONTEMURRO, Marco; CATAPANO, Anita; DOROSZEWSKI, Dominique (Elsevier, 2016)This work deals with the problem of the optimum design of a sandwich panel made of carbon-epoxy skins and a metallic cellular core. The proposed design strategy is a multi-scale numerical optimisation procedure that does ...
On the effective integration of manufacturability constraints within the multi-scale methodology for designing variable angle-tow laminates Article dans une revue avec comité de lectureMONTEMURRO, Marco; CATAPANO, Anita (Elsevier, 2017)In this work a multi-scale two-level (MS2L) optimisation strategy for optimising VAT composites is presented. In the framework of the MS2L methodology, the design problem is split and solved into two steps. At the first ...