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Multidisciplinary design automation: Working with product model extensions
Jönköping University, School of Engineering, JTH, Product Development. Jönköping University, School of Engineering, JTH. Research area Product Development - Computer supported engineering design.ORCID iD: 0000-0002-9337-791x
2018 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

Being able to efficiently and effectively provide custom products has been identified as a competitive advantage for manufacturing organizations. Product configuration has been shown to be an effective way of achieving this through a modularization, product platform and product family development approach. A core assumption behind product configuration is that the module variants and their constraints can be explicitly defined as product knowledge in terms of geometry and configuration rules. This is not always the case, however. Many companies require extensive engineering to develop each module variant and cannot afford to do so in order to meet potential customer requirements within a predictable future. Instead, they try to implicitly define the module variants in terms of the process for how they can be realized. In this way they can realize module variants on demand efficiently and effectively when the customer requirements are better defined, and the development can be justified by the increased probability of profiting from the outcome.

Design automation, in its broadest definition, deals with computerized engineering support by effectively and efficiently utilizing pre-planned reusable assets to progress the design process. There have been several successful implementations reported in the literature, but a widespread use is yet to be seen. It deals with the explicit definition of engineering process knowledge, which results in a collection of methods and models that can come in the form of computer scripts, parametric CADmodels, template spreadsheets, etc. These methods and models are developed using various computer tools and maintained within the different disciplines involved, such as geometric modeling, simulation, or manufacturing, and are dependent on each other through the product model. To be able to implement, utilize, and manage design automation systems in or across multiple disciplines, it is important to first understand how the disciplinary methods and models are dependent on each other through the product model and then how these relations should be constructed to support the users without negatively affecting other aspects, such as modeling flexibility, minimum documentation, and software tool independence.

To support the successful implementation and management of design automation systems the work presented here has focused on understanding how some digital product model constituents are, can, and, to some extent, should be extended to concretize relations between methods and models from different tools and disciplines. It has been carried out by interviewing Swedish industrial companies, performing technical reviews, performing literature reviews, and developing prototypes, which has resulted in an increased understanding and the consequent development of a conceptual framework that highlights aspects relating to the choice of extension techniques.

Place, publisher, year, edition, pages
Jönköping: Jönköping University, School of Engineering , 2018. , p. 56
Series
JTH Dissertation Series ; 037
National Category
Software Engineering
Identifiers
URN: urn:nbn:se:hj:diva-41191ISBN: 978-91-87289-38-5 (print)OAI: oai:DiVA.org:hj-41191DiVA, id: diva2:1240342
Available from: 2018-08-21 Created: 2018-08-21 Last updated: 2018-08-21Bibliographically approved
List of papers
1. Extended CAD-models – State of Practice within Three Companies
Open this publication in new window or tab >>Extended CAD-models – State of Practice within Three Companies
2017 (English)In: IEEM2017, International Conference on Industrial Engineering and Engineering Management, 10-13 December, 2017, Singapore, IEEE, 2017, p. 1089-1093Conference paper, Published paper (Refereed)
Abstract [en]

Product platforms and product family design have been recognized as successful methods to enable masscustomization strategies. However, companies working with products where pre-defined product variants are not feasible require a more generic platform with re-usable components as well as engineering resources. Extended CAD-models is an approach where CAD-models are utilized as carriers of information to support re-usability of both geometric content and engineering activities, decreasing product development lead-time and enabling the definition of a product family within Engineer-To-Order business contexts. The following paper presents the approach in more detail and the results of a multi-case study where three Swedish industrial companies were interviewed. Results show that all companies store information within the CAD-models to support re-usability. Several challenges were expressed such as managing responsibilities and modeling flexible CAD-models. Future trends involve the concept, but to which extent is not clear.

Place, publisher, year, edition, pages
IEEE, 2017
Series
IEEE International Conference on Industrial Engineering and Engineering Management (IEEM), ISSN 2157-362X
Keywords
Extended CAD-model, Platform strategy, State of practice
National Category
Production Engineering, Human Work Science and Ergonomics
Identifiers
urn:nbn:se:hj:diva-38549 (URN)10.1109/IEEM.2017.8290060 (DOI)000428267800222 ()2-s2.0-85045235592 (Scopus ID)
Conference
IEEM2017, International Conference on Industrial Engineering and Engineering Management, 10-13 December, 2017, Singapore
Available from: 2018-01-15 Created: 2018-01-15 Last updated: 2018-09-11Bibliographically approved
2. Review of CAD-model Capabilities and Restrictions for Multidisciplinary use
Open this publication in new window or tab >>Review of CAD-model Capabilities and Restrictions for Multidisciplinary use
2018 (English)In: Computer-Aided Design and Applications, ISSN 1686-4360, p. 1-11Article in journal (Refereed) Epub ahead of print
Abstract [en]

Product development is an iterative process, partially due to changes in both company internal and external product requirements, resulting in changes to the product under development. These changes might require recapitulation of design rationale and result in re-doing assessments and syntheses of different kinds. One way to support this work is to proactively model in such a way that as much as possible of the previous work can be re-used. Not only within one product development project but also across and to future ones. Modelling for re-use can be done by documenting design rationale and formalising performed activities as design guidelines or computer scripts. To be able to find and re-use this information it could be attached to the product features which it relates to. Since geometry is such a core product characteristic, especially within the mechanical industry, and is often modelled as CAD-models, this paper presents a review of CAD-model capabilities and restrictions to serve as a carrier of multidisciplinary information. This is done by; enquiring three Swedish companies, exploring an automated Finite Element Analysis method utilising the CAD-model as a carrier of information, and reviewing different CAD software capabilities. Results show that there are at least seven extension techniques, out of which all are currently being used or considered to be in the future, by at least one company. Further, depending on the extension technique, extendibility and human-comprehension of the added information differ.

Place, publisher, year, edition, pages
CAD Solutions, 2018
Keywords
Computer-aided design, computer supported engineering, simulation-ready cad-models, knowledge re-use
National Category
Production Engineering, Human Work Science and Ergonomics
Identifiers
urn:nbn:se:hj:diva-37034 (URN)10.1080/16864360.2017.1419639 (DOI)2-s2.0-85040971759 (Scopus ID)
Available from: 2017-08-28 Created: 2017-08-28 Last updated: 2018-08-21
3. Extended design assets enabling automated tool development as a part of a product platform approach
Open this publication in new window or tab >>Extended design assets enabling automated tool development as a part of a product platform approach
2018 (Swedish)In: DS92: Proceedings of the DESIGN 2018 15th International Design Conference / [ed] Marjanović D., Štorga M., Škec S., Bojčetić N., Pavković N., The Design Society, 2018, p. 757-768Conference paper, Published paper (Refereed)
Abstract [en]

Product platform development is a well-established approach for reusing product knowledge in the form of geometry and its configuration rules and constraints. Explicitly defining all platform components is not always possible however. This is why a product platform approach where the processes of realising platform components also are supported is needed, instead of exclusively relying on their results. The work presented here works toward this, with a focus on automated tool development enabled by extending design assets from different tools.

Place, publisher, year, edition, pages
The Design Society, 2018
Series
Design, ISSN 1847-9073
Keywords
product platform, design automation, product families, model based engineering
National Category
Production Engineering, Human Work Science and Ergonomics
Identifiers
urn:nbn:se:hj:diva-39681 (URN)10.21278/idc.2018.0219 (DOI)978-953-7738-59-4 (ISBN)
Conference
15th International Design Conference - DESIGN 2018, May 21st-24th, 2018, Dubrovnik, Croatia
Available from: 2018-06-01 Created: 2018-06-01 Last updated: 2018-09-11Bibliographically approved
4. Multidisciplinary design automation – A conceptual framework for working with product model extensions
Open this publication in new window or tab >>Multidisciplinary design automation – A conceptual framework for working with product model extensions
(English)Manuscript (preprint) (Other academic)
National Category
Software Engineering
Identifiers
urn:nbn:se:hj:diva-41190 (URN)
Note

Submitted to an international journal.

Available from: 2018-08-21 Created: 2018-08-21 Last updated: 2018-08-21
5. Assessment of Simulation Ready CAD Models in a Set Based Concurrent Engineering Context
Open this publication in new window or tab >>Assessment of Simulation Ready CAD Models in a Set Based Concurrent Engineering Context
2016 (English)In: Proceedings of the DESIGN 2016 14th International Design Conference, Dubrovnik, May 16-19, 2016. / [ed] Marjanović, D., Štorga, M., Pavković, N., Bojčetić, N., Škec, S., The Design Society, 2016, p. 649-658Conference paper, Published paper (Refereed)
Abstract [en]

Set-based concurrent engineering (SBCE) has been pointed out as a means of enabling customisation and easy adaptation to fluctuating requirements. A feature and script based automation method of Finite Element Analysis has been proposed and developed by [Johansson, 2014] to help support SBCE. This article presents an assessment of the purposed method with respect to its industrial need, scientific novelty, and further work required. Outcomes of which include a new CAD-model tagging technique, positive industrial feedback and further work suggestions.

Place, publisher, year, edition, pages
The Design Society, 2016
Keywords
Automated FEA, technology transfer, simulation ready CAD models, set-based concurrent engineering
National Category
Software Engineering
Identifiers
urn:nbn:se:hj:diva-30038 (URN)000395390600066 ()2-s2.0-84980005522 (Scopus ID)
Conference
DESIGN 2016, 14th International Design Conference
Available from: 2016-05-24 Created: 2016-05-24 Last updated: 2018-08-21Bibliographically approved
6. Automated Producibility Assessment Enabling Set-Based Concurrent Engineering
Open this publication in new window or tab >>Automated Producibility Assessment Enabling Set-Based Concurrent Engineering
2016 (English)In: Transdisciplinary Engineering: Crossing Boundaries / [ed] Milton Borsato, Nel Wognum, Margherita Peruzzini, Josip Stjepandić and Wim J.C. Verhagen, IOS Press, 2016, p. 947-956Conference paper, Published paper (Refereed)
Abstract [en]

The aero-engine industry is continuously faced with new challenging cost and environmental requirements. This forces company's, active in the industry, to work toward more fuel efficient engines with less environmental impact at a lower cost. This paper presents a method for assessing producibility of large sets of components within aircraft engines to enable a Set-Based Concurrent Engineering development approach. A prototype system has been developed aimed at enabling weldability analysis at a sub-supplier within the aero-engine industry. It is a part of a multi-objective decision support tool used in early design stages. The tool produces sets of CAD-models reaching the hundreds for different analyses, mainly focusing on performance aspects within structural analysis, aerodynamics and thermodynamics.

Place, publisher, year, edition, pages
IOS Press, 2016
Series
Advances in Transdisciplinary Engineering, ISSN 2352-7528 ; 4
Keywords
Manufacturability, Producibility, Set-based Concurrent Engineering, Aero-engine industry
National Category
Other Mechanical Engineering Aerospace Engineering
Identifiers
urn:nbn:se:hj:diva-32002 (URN)10.3233/978-1-61499-703-0-947 (DOI)978-1-61499-703-0 (ISBN)978-1-61499-702-3 (ISBN)
Conference
Proceedings of the 23rd ISPE Inc. International Conference on Transdisciplinary Engineering, Parana, Curitiba, October 3–7, 2016.
Available from: 2016-10-17 Created: 2016-10-17 Last updated: 2018-08-21Bibliographically approved

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