Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Design and optimization of a composite mast
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Lightweight Structures.
2018 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The mast is a key element in the behavior of a sail boat. It impacts the overall dynamic when sailing and gives the lifting shape to the sail generating the driving force. The objective of this thesis is to design a new mast that can equal or surpass the behavior of a competing mast, most widespread and appreciated mast by the sailors today.The focus of this study was set on the design of the composite layup for a given mast shape. The mast was modeled in a Computer Assisted Design software. Thanks to this numerical model, the composite layup was optimized manually so the mast would reach the deformation specifications given by the sailors and validate navigation, competition and manufacturing constraints.To specify design criteria, the competing mast was retro-engineered. A first set of mast designs were explored and one was chosen according to the criteria. This led to the fine-tuning of the layup and manufacturing of a first mast that was tested by the sailors. The feedback from the sailors was encouraging regarding previous design tentative, but the mast was actually too flexible with respect to the deformation specifications. A second mast was designed very close to the sailors’ target to confirm the feedback given on the first mast.The results of the two masts showed an improvement of the behavior, but not sufficient. The CAD model predicts quite well the deformations out of manufacturing and the masts can now be designed directly to the sailors’ specifications. The validation cases are not sufficient to predict the mast’s behavior. Hence, the optimization will be automated to generate and test numerically a high quantity of masts. The focus will then be set on dynamic and structural-aerodynamic co-simulation to improve the predictability of the behavior.

Place, publisher, year, edition, pages
2018. , p. 43
Series
TRITA-SCI-GRU ; 2018:347
National Category
Vehicle Engineering
Identifiers
URN: urn:nbn:se:kth:diva-243878OAI: oai:DiVA.org:kth-243878DiVA, id: diva2:1287120
External cooperation
Dassault Systèmes
Examiners
Available from: 2019-02-08 Created: 2019-02-08 Last updated: 2019-02-08Bibliographically approved

Open Access in DiVA

No full text in DiVA

By organisation
Lightweight Structures
Vehicle Engineering

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
Total: 32 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf