Optimal Topology of Aircraft Rib and Spar Structures Under Aeroelastic Loads

Bret K. Stanford, Peter D. Dunning

Research output: Contribution to journalArticlepeer-review

64 Citations (Scopus)
251 Downloads (Pure)


Several topology optimization problems are conducted within the ribs and spars of a wing box. It is desired to locate the best position of lightening holes, truss/cross-bracing, etc. A variety of aeroelastic metrics are isolated for each of these problems: elastic wing compliance under trim loads and taxi loads, stress distribution, and crushing loads. Aileron effectiveness under a constant roll rate is considered as are dynamic metrics: natural vibration frequency and flutter. This approach helps uncover the relationship between topology and aeroelasticity in subsonic transport wings and can therefore aid in understanding the complex aircraft design process that must eventually consider all these metrics and load cases simultaneously.
Original languageEnglish
Pages (from-to)1298-1311
Number of pages14
JournalJournal of Aircraft
Issue number4
Early online date19 Sep 2014
Publication statusPublished - Jul 2015


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