Integrated cost/weight optimization of composite skin/stringer elements
2007 (English)In: Proceedings of the 16th International Conference on Composite Materials, Springer, 2007, 325-334 p.Conference paper (Refereed)
In this paper, a methodology for a combined cost/weight optimization of composite elements is proposed. The methodology is similar to the work of Curran et al. , where the objective function is formed by manufacturing costs and a so-called weight penalty. This weight penalty could include the effect of fuel burn, environmental impact or con-tractual penalties due to overweight, and depends on the view of the "optimizer". In our approach, the analytical cost model is replaced by a commercial software package that allows a more realistic model of the manufacturing costs. In the spotlight is a parameter study, in which the weight penalty is varied from zero to infinity, literally varying from pure cost to pure weight opti-mization. This is done for three material configura-tions: a metal/metal, a composite/metal and a com-posite/composite skin/stringer panel. It is shown that the design solution depends on the magnitude of the weight penalty and that - depending on this magni-tude - another material configuration has to be re-garded as the optimum.
Place, publisher, year, edition, pages
Springer, 2007. 325-334 p.
Cost/Weight Optimization, Weight Penalty, Direct Operating Cost, Composite Structures
IdentifiersURN: urn:nbn:se:kth:diva-8015ScopusID: 2-s2.0-79960055319ISBN: 978-493113605-2OAI: oai:DiVA.org:kth-8015DiVA: diva2:13222
16th International Conference on Composite Materials, ICCM-16 - "A Giant Step Towards Environmental Awareness: From Green Composites to Aerospace", Kyoto, Japan, 8 July 2007 through 13 July 2007
QC 201011122008-04-222008-04-222015-07-09Bibliographically approved