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Design Space Exploration for Structural Aircraft Components: A method for using topology optimization in concept development
Linköping University, Department of Management and Engineering, Machine Design.
2019 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

When building aircrafts, structural components must be designed for high strength, low cost, and easy assembly.To meet these conditions structural components are often based upon previous designs, even if a new component is developed.Refining previous designs can be a good way of preserving knowledge but can also limit the exploration of new design concepts.

Currently the design process for structural aircraft components at SAAB is managed by design engineers. The design engineer is responsible for ensuring the design meets requirements from several different disciplines such as structural analysis, manufacturing, tool design, and assembly.Therefore, the design engineer needs to have good communication with all disciplines and an effective flow of information.

The previous design is refined, it is then reviewed and approved by adjacent disciplines.Reviewing designs is an iterative process, and when several disciplines are involved it quickly becomes time consuming.Any time the design is altered it has to be reviewed once more by all disciplines to ensure the change is acceptable.So there is a need for further customizing the design concept to decrease the number of iterations when reviewing.

Design Space Exploration DSE is a well known method to explore design alternatives before implementation and is used to find new concepts.This thesis investigates if DSE can be used to facilitate the design process of structural aircraft components and if it can support the flow of information between different disciplines.To find a suitable discipline to connect with design a prestudy is conducted, investigating what information affect structural design and how it is managed.The information flow is concluded in a schematic diagram where structural analysis is chosen as additional discipline.

By using topology optimization in a DSE, design and structural analysis are connected.The design space can be explored with regards to structural constraints.The thesis highlights the possibilities of using DSE with topology optimization for developing structural components and proposes a method for including it in the design process.

Place, publisher, year, edition, pages
2019. , p. 52
Keywords [en]
Design Space Exploration, Topology Optimization, Knowledge Based Engineering, Model Based Design
National Category
Aerospace Engineering
Identifiers
URN: urn:nbn:se:liu:diva-159955ISRN: LIU-IEI-TEK-A--19/03513-SEOAI: oai:DiVA.org:liu-159955DiVA, id: diva2:1347039
External cooperation
SAAB AB
Subject / course
Machine Design
Presentation
2019-06-14, 08:15 (Swedish)
Supervisors
Examiners
Available from: 2019-08-30 Created: 2019-08-29 Last updated: 2019-08-30Bibliographically approved

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