Cost/weight optimization of composite prepreg structures for best draping strategy
2010 (English)In: Composites. Part A, Applied science and manufacturing, ISSN 1359-835X, Vol. 41, no 4, 464-472 p.Article in journal (Refereed) Published
The application of hand-laid carbon fiber prepreg is very expensive from a labor perspective. Therefore the manufacturing cost should be included in the design process. In this work, we propose a novel optimization framework which contains a draping simulation in combination with a detailed cost estimation package and the calculation of the structural performance based on FE. We suggest applying the methodology in two steps. First, a draping knowledge database is generated in which combinations of seed points and reference angles are evaluated in terms of fiber angle deviation, scrap, ultrasonic cuts and material shear. Second, a cost/weight optimization framework picks the best sets of plies during the subsequent optimization. The methodology is tested by means of a curved C-spar which is designed using plain weave and unidirectional prepreg. Different objectives in the generation of the draping database lead to different design solutions.
Place, publisher, year, edition, pages
Elsevier , 2010. Vol. 41, no 4, 464-472 p.
Cost/Weight Optimization, Finite element analysis, Prepreg, Lay-up (manual/automated)
Composite Science and Engineering
Research subject SRA - Production
IdentifiersURN: urn:nbn:se:kth:diva-11475DOI: 10.1016/j.compositesa.2009.11.012ISI: 000275800400002ScopusID: 2-s2.0-75749103014OAI: oai:DiVA.org:kth-11475DiVA: diva2:277045
ProjectsEuropean Framework Program 6, project ALCAS, AIP4-CT-2003-516092Nationella flygtekniska forskningsprogrammet (NFFP) 4, project kostnadseffektiv kompositstruktur (KEKS)
FunderXPRES - Initiative for excellence in production research
Uppdaterad från submitted till published: 20100723 QC 201007232009-11-132009-11-132015-09-22Bibliographically approved