Multi-objective topology optimization and structural analysis of periodic spaceframe structures

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dc.contributor.authorLim, Jarad
dc.contributor.authorYou, Chao
dc.contributor.authorDayyani, Iman
dc.date.accessioned2020-02-25T09:28:15Z
dc.date.available2020-02-25T09:28:15Z
dc.date.issued2020-02-05
dc.description.abstractReduction of structural weight provides significant benefits in many engineering applications. While methods to optimise structural shape and topology of both continuous solids and discrete frame structures have existed for a while, the advent of additive layer manufacturing processes has enabled more complex geometries to be feasible. In this paper, a periodic spaceframe structure is designed for minimum mass and maximum effective flexural and torsional rigidities. A method of parametrising the spaceframe through its constituent unit cells is proposed, and Genetic Algorithm (GA) multi-objective optimisation is used to optimise its topology, size and geometry as a generic structure. The superior performance of the topology optimised periodic spaceframe is highlighted in terms of structural rigidity, large deformation capability, buckling and vibrational modal analysis in compare to equivalent beam structures of identical weight and comparable domain. The results show that the proposed method can effectively generate lightweight substitute structures of great mechanical performance in many beam structures applications, such as: aircraft wing spars. The periodic spaceframe is applied into a conventional aircraft wing structure to demonstrate the possibilities of promoting weight saving in the design of civil aircraft wings.en_UK
dc.identifier.citationLim J, You C, Dayyani I. (2020) Multi-objective topology optimization and structural analysis of periodic spaceframe structures. Materials and Design, Volume 190, May 2020, Article number 108522en_UK
dc.identifier.cris26175635
dc.identifier.issn0264-1275
dc.identifier.urihttps://doi.org/10.1016/j.matdes.2020.108552
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/15180
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rights© Cranfield University, 2015. All rights reserved. No part of this publication may be reproduced without the written permission of the copyright holder.
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectPeriodic structuresen_UK
dc.subjectMulti-objective topology optimizationen_UK
dc.subjectStructural analysisen_UK
dc.subjectAircraft wing structureen_UK
dc.titleMulti-objective topology optimization and structural analysis of periodic spaceframe structuresen_UK
dc.typeArticleen_UK

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