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Collaborative Multidisciplinary Design Optimization for Conceptual Design of Complex Products
Linköping University, Department of Management and Engineering, Machine Design. Linköping University, Faculty of Science & Engineering.
2016 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

MULTIDESCIPLINARY design optimization (MDO) has developed in theory andpractice during the last three decades with the aim of optimizing complexproducts as well as cutting costs and product development time. Despite thisdevelopment, the implementation of such a method in industry is still a challenge andmany complex products suffer time and cost overruns.

Employing higher fidelity models (HFMs) in conceptual design, one of the early and most important phases in the design process, can play an important role in increasing the knowledge base regarding the concept under evaluation. However, design space in the presence of HFMs could significantly be expanded. MDO has proven to be an important tool for searching the design space and finding optimal solutions. This leads to a reduction in the number of design iterations later in the design process, with wiser and more robust decisions made early in the design process to rely on.

In complex products, different systems from a multitude of engineering disciplines have to work tightly together. This stresses the importance of evolving various domain experts in the design process to improve the design from diverse engineering perspectives. Involving more engineers in the design process early on raises the challenges of collaboration, known to be an important barrier to MDO implementation in industry. Another barrier is the unavailability and lack of MDO experts in industry; those who understand the MDO process and know the implementation tasks involved.

In an endeavor to address the mentioned implementation challenges, a novel collaborative multidisciplinary design optimization (CMDO) framework is defined in order to be applied in the conceptual design phase. CMDO provides a platform where many engineers team up to increase the likelihood of more accurate decisions being taken early on. The structured way to define the engineering responsibilities and tasks involved in MDO helps to facilitate the implementation process.

It will be further elaborated that educating active engineers with MDO knowledge is an expensive and time-consuming process for industries. Therefore, a guideline for CMDO implementation in conceptual design is proposed in this thesis that can be easily followed by design engineers with limited prior knowledge in MDO. The performance of the framework is evaluated in a number of case studies, including applications such as aircraft design and the design of a tidal water power plant, and by engineers in  industry and student groups in academia.

Place, publisher, year, edition, pages
Linköping: Linköping University Electronic Press, 2016. , 68 p.
Series
Linköping Studies in Science and Technology. Dissertations, ISSN 0345-7524 ; 1779
National Category
Production Engineering, Human Work Science and Ergonomics Interaction Technologies Human Computer Interaction Design Other Mechanical Engineering
Identifiers
URN: urn:nbn:se:liu:diva-131792DOI: 10.3384/diss.diva-131792ISBN: 9789176857120 (print)OAI: oai:DiVA.org:liu-131792DiVA: diva2:1033392
Public defence
2016-11-18, ACAS, A building, Campus Valla, Linköping, 13:15 (English)
Opponent
Supervisors
Available from: 2016-10-06 Created: 2016-10-06 Last updated: 2016-12-20Bibliographically approved
List of papers
1. A Collaborative Tool for Conceptual Aircraft Systems Design
Open this publication in new window or tab >>A Collaborative Tool for Conceptual Aircraft Systems Design
2012 (English)In: Guidance, Navigation, and Control and Co-located Conferences: AIAA Modeling and Simulation Technologies Conference / [ed] The American Institute of Aeronautics and Astronautics, Reston, VA, USA: American Institute of Aeronautics and Astronautics, 2012, 1-10 p.Conference paper, Published paper (Refereed)
Abstract [en]

Advances in recent years has brought forth many feasible technologies which oer signif-icant design advantages over the traditional aircraft vehicle ight systems. These advanceshave brought about a need for the aircraft conceptual engineers to evaluate these newtechnologies so as to realize a realistic and optimized architecture which fulls all criti-cal disciplinary requirements. To evaluate these systems, it is necessary to use models ofcomplexity which are a degree higher than what is being used today. Quick developmentand evaluation of these models can be a hard task for an engineer to achieve consideringthe multidisciplinary nature of the systems. A collaborative eort in model developmentbetween various department is needed if the conceptual design is to be completed withinthe time frame. To facilitate a collaborative conceptual design a research project was for-malized at Linkoping university, which has led to the development of a tool named CAVE(Conceptual Aircraft Vehicle Engineering) which can be used to evaluate the architectureof aircraft systems. In this paper, CAVE as a conceptual design tool will be presented.

Place, publisher, year, edition, pages
Reston, VA, USA: American Institute of Aeronautics and Astronautics, 2012
Keyword
Aircraft Conceptual Design
National Category
Aerospace Engineering
Identifiers
urn:nbn:se:liu:diva-86275 (URN)10.2514/6.2012-4716 (DOI)978-1-62410-183-0 (ISBN)
Conference
AIAA Modeling and Simulation Technologies Conference 13-16 August 2012, Minneapolis, Minnesota
Available from: 2012-12-18 Created: 2012-12-12 Last updated: 2016-10-06Bibliographically approved
2. Collaborative multidisciplinary design optimization: A framework applied on aircraft conceptual system design
Open this publication in new window or tab >>Collaborative multidisciplinary design optimization: A framework applied on aircraft conceptual system design
2015 (English)In: Concurrent Engineering - Research and Applications, ISSN 1063-293X, E-ISSN 1531-2003, Vol. 23, no 3, 236-249 p.Article in journal (Refereed) Published
Abstract [en]

In a product development process, it is crucial to understand and evaluate multiple and synergic aspects of systems such as performance, cost, reliability, and safety. These aspects are mainly considered during later stages of the design process. However, in order to improve the foundations for decision-making, this article presents methods that are intended to increase the engineering knowledge in the early design phases. In complex products, different systems from a multitude of engineering disciplines have to work tightly together. Collaborative design is described as a process where a product is designed through the collective and joint efforts of domain experts. A collaborative multidisciplinary design optimization process is therefore proposed in the conceptual design phase in order to increase the likelihood of more accurate decisions being taken early on. The performance of the presented framework is demonstrated in an industrial application to design aircraft systems in the conceptual phase.

Place, publisher, year, edition, pages
Sage Publications, 2015
Keyword
conceptual design; collaborative design; aircraft system design; multidisciplinary design optimization
National Category
Mechanical Engineering
Identifiers
urn:nbn:se:liu:diva-122539 (URN)10.1177/1063293X15587020 (DOI)000362993200005 ()
Note

Funding Agencies|VINNOVA (Swedens innovation agency) through the IMPOz project [2013-03758]

Available from: 2015-11-09 Created: 2015-11-06 Last updated: 2017-12-01
3. Implementation of collaborative multidisciplinary design optimization for conceptual design of a complex engineering product
Open this publication in new window or tab >>Implementation of collaborative multidisciplinary design optimization for conceptual design of a complex engineering product
Show others...
2016 (English)In: Concurrent Engineering - Research and Applications, ISSN 1063-293X, E-ISSN 1531-2003, Vol. 24, no 3, 251-265 p.Article in journal (Refereed) Published
Abstract [en]

This study investigates the performance of the collaborative multidisciplinary design optimization framework and how it facilitates the knowledge integration process. The framework is used to design and optimize an innovative concept of a tidal water power plant. The case study helps to highlight the challenges that may occur during implementation. The result is presented as a modified framework with less implementation difficulties. The improved framework shows significant reduction in design time and improvement in collaborative design optimization for a design team. The geometry of the product is optimized to minimize weight and maximize the power generated by the turbine with respect to some mechanical constraints.

Place, publisher, year, edition, pages
Sage Publications, 2016
National Category
Production Engineering, Human Work Science and Ergonomics Human Computer Interaction Fluid Mechanics and Acoustics Interaction Technologies Aerospace Engineering Design
Identifiers
urn:nbn:se:liu:diva-131790 (URN)10.1177/1063293X16661224 (DOI)000382850200005 ()
Note

Funding agencies: VINNOVA (Swedens innovation agency) through IMPOz project [2013-03758]

Available from: 2016-10-06 Created: 2016-10-06 Last updated: 2017-11-30Bibliographically approved
4. Rapid Concept Realization for Conceptual Design of Modular Industrial Robots
Open this publication in new window or tab >>Rapid Concept Realization for Conceptual Design of Modular Industrial Robots
2010 (English)In: Proceedings of NordDesign 2010, the 8th International NordDesign Conference, Göteborg, Sweden, 25.-27.08. 2010 / [ed] Andreas Dagman and Rikard Söderberg, 2010, 375-384 p.Conference paper, Published paper (Refereed)
Abstract [en]

When conducting design on novel mechatronic products, it can be valuable to test and evaluate the performance and properties of the concepts throughout the design process by producing them as downscaled prototypes, see Jouannet et al. [1]. This is especially true when the product is of unconventional design and the designer can get increased confidence of the proposed concept by testing it as a sub scaled version. Nonetheless, the process of realization of new concept should be done in a rapid fashion in order not to halt the design process and simultaneously increasing explicit knowledge about the concept. A case study will be illustrated which demonstrates how fully automated design and construction of downscaled prototypes is performed.

Keyword
Automated design, multidisciplinary design, industrial robots
National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-62606 (URN)978-91-633-7063-2 (Vol. 1) (ISBN)978-91-633-7064-9 (Vol. 2) (ISBN)
Conference
8th International NordDesign Conference, Göteborg, Sweden, August 25-27, Göteborg, Sweden
Available from: 2010-11-30 Created: 2010-11-30 Last updated: 2016-10-06Bibliographically approved

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