Integrated cost/weight optimization of aircraft structures
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
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.
Cost/Weight Optimization, Operating Cost, Weight Penalty, Composite Structures
Other Mechanical Engineering
IdentifiersURN: urn:nbn:se:kth:diva-11339DOI: 10.1007/s00158-009-0413-1ISI: 000274043200011ScopusID: 2-s2.0-77649337128OAI: oai:DiVA.org:kth-11339DiVA: diva2:274246
ProjectsEuropean 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 20100723.2009-10-272009-10-272015-09-22Bibliographically approved