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Optimisation of composite structures - enforcing the feasibility of lamination parameter constraints with computationally-efficient maps

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Show simple item record Macquart, T. Maes, V. Bordogna, Marco T. Pirrera, A. Weaver, Paul M. 2018-07-05T14:39:34Z 2018
dc.description peer-reviewed en_US
dc.description The full text of this article will not be available in ULIR until the embargo expires on the 15/05/2020
dc.description.abstract Composite materials are increasingly used in high performance structural applications because of their high strength and stiffness to weight ratios together with their significant tailoring capabilities. The stiffness of a monolithic laminate can be expressed as a linear combination of material invariants, one thickness variable, and twelve lamination parameters, which is an efficient alternative to using fibre angles as design variables. However, feasibility constraints originating from the interdependency between lamination parameters must be satisfied to obtain laminates with realistic stiffness properties. Currently, enforcing these feasibility constraints is a computationally intensive task. In this paper we propose to use normalised design variables that inherently map (i.e. correspond) to feasible lamination parameters, effectively removing the need to evaluate feasibility constraints altogether. To this end, linear and B-spline maps of the feasible lamination parameter subspace are proposed and evaluated. Results of 2D and 4D benchmark analyses and optimisation studies suggest that the proposed methodology does successfully provide an efficient means of achieving feasible results at lower computational costs. en_US
dc.language.iso eng en_US
dc.publisher Elsevier en_US
dc.relation.ispartofseries Composite Structures;192, pp. 605-615
dc.rights This is the author’s version of a work that was accepted for publication in Composite Structures. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Composite Structures, 2018, 192, pp. 605-615, en_US
dc.subject composite materials en_US
dc.subject laminate en_US
dc.subject structural optimisation en_US
dc.subject lamination parameters en_US
dc.subject maps en_US
dc.title Optimisation of composite structures - enforcing the feasibility of lamination parameter constraints with computationally-efficient maps en_US
dc.type info:eu-repo/semantics/article en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.identifier.doi 10.1016/j.compstruct.2018.03.049
dc.contributor.sponsor EPSRC en_US
dc.relation.projectid EP/N006127/1 en_US 2020-05-15
dc.embargo.terms 2020-05-15 en_US
dc.rights.accessrights info:eu-repo/semantics/embargoedAccess en_US

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