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Integrated cost/weight optimization of aircraft structures
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering. (Lightweight Structures)
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering. (Lightweight Structures)ORCID iD: 0000-0002-9744-4550
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering. (Lightweight Structures)ORCID iD: 0000-0003-0198-6660
2010 (English)In: Structural and multidisciplinary optimization (Print), ISSN 1615-147X, E-ISSN 1615-1488, Vol. 41, no 2, 325-334 p.Article in journal (Refereed) Published
Abstract [en]

A methodology for a combined cost/weight optimization of aircraft components is proposed. The objective function is formed by a simplified form of direct operating cost, i.e. by a weighted sum of the manufacturing costs and the component weight. Hence, the structural engineer can perform the evaluation of a design solution based on economical values rather than pure cost or weight targets.The parameter that governs the balance between manufacturing cost and weight is called weight penalty and incorporates the effect of fuel burn, environmental impact or contractual penalties due to overweight. Unlike previous work, the analytical cost model and structural models are replaced by commercially available software packages that allow a more realistic model of the manufacturing costs; further, arbitrary constraints for the structural analysis can be implemented. By means of parametric studies it is shown that the design solution strongly depends on the magnitude of the weight penalty.

Place, publisher, year, edition, pages
Berlin Heidelberg: Springer, 2010. Vol. 41, no 2, 325-334 p.
Keyword [en]
Cost/Weight Optimization, Operating Cost, Weight Penalty, Composite Structures
National Category
Other Mechanical Engineering
URN: urn:nbn:se:kth:diva-11339DOI: 10.1007/s00158-009-0413-1ISI: 000274043200011ScopusID: 2-s2.0-77649337128OAI: diva2:274246
European Framework Program 6, project ALCAS, AIP4-CT-2003-516092Nationella flygtekniska forskningsprogrammet (NFFP) 4, project kostnadseffektiv kompositstruktur (KEKS)

Parts of this paper have been presented as: Kaufmann M, Zenkert D, Wennhage W. "Integrated cost/weight optimization of composite skin/stringer elements", Proceedings of ICCM-16, Kyoto (2007). QC 20100723.

Available from: 2009-10-27 Created: 2009-10-27 Last updated: 2015-09-22Bibliographically approved

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