Functional representation as design rationale

Chandrasekaran, B.; Goel, Ashok K.; Iwasaki, Yumi

doi:10.1109/2.179157

Cited by 145 publications

(57 citation statements)

References 7 publications

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“…So functionality plays a crucial role in the conceptual design of engineering devices (Chandrasekaran, Goel, & Iwasaki, 1993;Keuneke, 1991;Pahl & Beitz, 1988;Umeda, Ishii, Yoshioka, Shimomura, & Tomiyama, 1996). For example, a designer often decomposes a required function into sub(micro)-functions, socalled functional decomposition (Pahl & Beitz, 1988).…”

Section: Introductionmentioning

confidence: 99%

Ontology-based description of functional design knowledge and its use in a functional way server

Kitamura

Mizoguchi

2003

Expert Systems with Applications

120

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In conceptual design of engineering devices, a designer decomposes a required function into sub-functions, so-called functional decomposition, using a kind of functional knowledge representing achievement relations among functions. However, such knowledge about functionality of engineering devices is usually left implicit because each designer possesses it. Even if such knowledge is found in documents, it is often scattered around technical domains and lacks consistency. Aiming at capturing such functional knowledge explicitly and sharing it in design teams, we discuss its systematic description based on functional ontologies which provide common concepts for its consistent and generic description. We propose a new concept named 'way of achievement' as a key concept for capturing such functional knowledge. Categorization of typical representations of the knowledge and its organization as is-a hierarchies are also discussed. The generic concepts representing functionality of a device in the functional knowledge are provided by the functional concept ontology, which makes the functional knowledge consistent and applicable to other domains. We also discuss development of a design supporting system using the systematized knowledge, called a functional way server. It helps human designers redesign an existing engineering device by providing a wide range of alternative ways of achievement of the required function in a manner suitable for the viewpoint of each designer and then facilitates innovative design. q

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Section: Introductionmentioning

confidence: 99%

Ontology-based description of functional design knowledge and its use in a functional way server

Kitamura

Mizoguchi

2003

Expert Systems with Applications

120

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“…In the real world, majority of the decisions are made in the conceptual design stage. The integration of conceptual design into the whole product model is a prerequisite for a comprehensive and explicit design intent representation (Chandrasekaran et al 1993;Henderson 1993;Gui and Mantyla 1994). Two aspects of benefits can be expected.…”

Section: Engineering Intent Representation and Managementmentioning

confidence: 99%

Paradigm shift: unified and associative feature-based concurrent and collaborative engineering

Chen

Thimm

2008

J Intell Manuf

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With widely used concurrent and collaborative engineering technologies, the validity and consistency of product information become important. In order to establish the state of the art, this paper reviews emerging concurrent and collaborative engineering approaches and emphasizes on the integration of different application systems across product life cycle management (PLM) stages. It is revealed that checking product information validity is difficult for the current computer-aided systems because engineering intent is at best partially represented in product models. It is also not easy to maintain the consistency among related product models because information associations are not established. The purpose of this review is to identify and analyze research issues with respect to information integration and sharing for future concurrent and collaborative engineering. A new paradigm of research from the angle of feature unification and association for product modeling and manufacturing is subsequently proposed.Keywords Concurrent and collaborative engineering · Feature-based design and manufacturing · Product life cycle modeling · Information validity and consistency

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“…Most representation models are related to specific domains. For example, functional representations focus on describing how the device works [52]. A Rationale Construction Framework (RCF) was also suggested to capture rationale information by monitoring designers' interaction with a CAD system [41].…”

Section: Design Intent Communication and Model Reusementioning

confidence: 99%

Extended 3D annotations as a new mechanism to explicitly communicate geometric design intent and increase CAD model reusability

Camba

Contero

Johnson

2014

Computer-Aided Design

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Revista:Computer-Aided Design Versión / Versió: Preprint Cita bibliográfica / Cita bibliogràfica (ISO 690):CAMBA, Jorge, et al. Extended 3D annotations as a new mechanism to explicitly communicate geometric design intent and increase CAD model reusability. ComputerAided Design, 2014, vol. 57, p. 61-73 AbstractA successful implementation of the Model-Based Enterprise concept (MBE) requires maximizing the potential benefits of annotated 3D models. The foundations of the MBE model are established by digital product definition data practices, which are currently regulated by standards such as ASME Y14. 41-2003 and ISO 16792:2006. At the center of the MBE concept is the notion of CAD model reusability, which relies on the idea that 3D CAD models can be reused both throughout the entire product lifecycle and as a starting point for future development of new products. In this context, a critical aspect of CAD model reuse is the proper identification and understanding of the geometric design intent that is usually expressed implicitly within the CAD model.In this work, we present a method to communicate geometric design intent explicitly by overloading and extending the scope of the current annotation instruments available in the MBE approach. We propose a new broader type of model annotation that we call "extended annotation," where design information is represented both internally within the 3D model and externally, on a separate repository. This structure naturally demands additional mechanisms to support the interaction of users with the information. In order to manage the information stored in these extended annotations effectively, we implemented an annotation manager that automatically synchronizes the dual representation of the annotations. To reduce the visual clutter in the 3D model, the software provides powerful filtering, editing, and visualization capabilities, giving users complete control of the information stored in the model. Finally, a study was conducted with 60 participants to evaluate the performance of the proposed model and the usability of the annotation manager. Results show a statistically significant benefit of using the extended annotation system, suggesting the use of this model as a valuable approach to improve design intent communication.

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Functional representation as design rationale

Cited by 145 publications

References 7 publications

Ontology-based description of functional design knowledge and its use in a functional way server

Ontology-based description of functional design knowledge and its use in a functional way server

Paradigm shift: unified and associative feature-based concurrent and collaborative engineering

Extended 3D annotations as a new mechanism to explicitly communicate geometric design intent and increase CAD model reusability

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