Function Behavior Structure Research Articles

선박 초기설계에 FBS 설계 모델의 응용에 관한 연구

AbstractThe design process becomes more difficult due to the increasing complexity of products. Thus, without any proper design experience, designer cannot han dle his design problems systematically. Besides, the conventional optimal design method cannot be used effectively at the early design stage, since most design problems must be formulated in terms of objective and constraint functions based on the mathematical co ncepts of Operation Research. Thus, in this paper, new design concept based on FBS (Function-Behavior- Structure) design model is introduced to help the novice design er formulate the complex design problems systematically into a mathematical form. In thi s FBS model, function means the designer's new intents designer wants to create for, struct ure stand for a final product configuration and behaviour is a product's performance. FBS des ign model is thus rather totally different concept used for formulating design problem, compared with conventional optimal design method. To validate this new FBS model, 330K VLCC design case is performed, and we found, though it is one design example case, that this new design concept could be effectively used for future ship design proble ms since, during the formulating design problem, the only engineering terminology su ch as function, structure, and behaviour of design product is used based on the engineerin g concepts, instead of mathematical terminology such as objective and constraints.※Keywords: Preliminary ship design(선박 초기 설계), Function(기능), Beh avior(행위), Structure(구조), Design activity(설계 행위)

A function–behavior–structure ontology of processes

AbstractThis paper presents how the function–behavior–structure (FBS) ontology can be used to represent processes despite its original focus on representing objects. The FBS ontology provides a uniform framework for classifying processes, and includes higher level semantics in their representation. We show that this ontology supports a situated view of processes based on a model of three interacting worlds. The situated FBS framework is then used to describe the situated design of processes.

An ontology of situated design teams

AbstractThis paper presents an ontological framework for situated design teams in which the team is both the subject and the object of designing. Team designing is modeled using the set of processes provided by the situated function–behavior–structure framework. This is a formal basis for understanding the drivers for change in the product to be designed and in the design team. We specifically focus on changes in a team's structure that emerge from interactions among individual team members and subteams.

On the conceptual framework of John Gero's FBS-model and the prescriptive aims of design methodology

In this paper we consider the Function–Behaviour–Structure model of designing in the version as developed by John Gero and collaborators. We identify two problems: the absence of a stable definition of function, and the model's double aim of describing actual designing and prescribing improved designing. These problems are not unique to the body of work we are addressing here; they are general problems that design methodologists have been struggling with in the last forty years. We argue that philosophy may help addressing them: it may fix a definition of function and illustrates how descriptive and prescriptive modelling can be distinguished and connected.

PRODUCT INNOVATION DRIVEN BY CONSTRUCTIVE MODEL OF UNEXPECTED DISCOVERIES FOR SITUATED COGNITION OF FUNCTION-BEHAVIOUR-STRUCTURE

Design of the descriptive and the situated methods are analyzed.Unexpected discovery(UXD)is a design method of scientific cognation which drives product innovation.Pro- duce innovation design is made to seek UXD in the situ- ated-analogy design process.The function-behaviour-structure (FBS)model and the UXD analyzing module are set up using the purposive combination of situated-design and some design- ing modes,which required product innovation.The outcome of FBS and UXD is influenced by a situated and a non-situated design.It is testified the situated analogy case of product inno- vation design is feasible between a tap and a door.

The situated function–behaviour–structure framework

This paper extends the function–behaviour–structure (FBS) framework, which proposed eight fundamental processes involved in designing. That framework did not explicitly account for the dynamic character of the context in which designing takes place, described by the notion of situatedness. This paper describes this concept as a recursive interrelationship between different environments, which, together with a model of constructive memory, provides the foundation of a situated FBS framework. The eight fundamental processes are then reconstructed within this new framework to represent designing in a dynamic world.

Modelling Expertise of Temporary Design Teams

This paper proposes a model of expertise of temporary design teams. We start by outlining a situated view of expertise as being grounded in individual experience, which emphasises its applicability and teleology. We use the construct of a computational agent to model the individual expert. We then show the advantages of the function-behaviour-structure (FBS) schema to represent the knowledge of a situated agent, which includes its knowledge about other agents. The ability of an agent to construct knowledge about the behaviour and parts of the knowledge of other agents has been found to be needed to allow social interaction among agents. Based on individual agents and their FBS views of one another, we then develop a model of expertise of temporary design teams that emerges from the interaction of individual experts. This bottom-up model is sensitive to changes in the composition of the team: some experts might leave the team while others join. However, the team members can usually establish the expertise of the new team without much effort as they can build upon their generalised knowledge gained from previously working in similar teams. We claim that our model provides a better understanding of team expertise and a basis for computational simulations of design teams.

Creative design research of product appearance based on human–machine interaction and interface

According to traditional design theory, the Function–Behavior–Structure design model pays more attention to the function and structure of the product. However this model still cannot strengthen the relationship between product appearance design and human–machine design effectively. This paper adopt converse design thinking and presents a improved design thinking methodology based on Constraint:Function–Behavior–Structure for product appearance design and give a general summarization of the features, methods and technology based on human–machine interaction and interface (HMI&I). At the same time it also combines with the behavior design of product related IT fields and constructs a new outline to improve the design of product appearance supported by the technology of computer aided design (CAD). Thus a new method about design thinking for CAD, a new abstract product design model and the key problem of design thinking based on HMI&I are addressed in this paper. The creative design theory that is driven by HMI&I will help in the development of a CAD software system and in the research of product design and manufacture. Additionally the trend of design thinking based on the technology of HMI&I are also analyzed and discussed at the end of the paper.

Knowledge intensive Petri net framework for concurrent intelligent design of automatic assembly systems

The integration of design and planning of flexible assembly system has been recognized as a tool for achieving efficient assembly in a production environment that demands assembly with a high degree of flexibility. This paper proposes a concurrent intelligent approach and framework for the design of robotic flexible assembly systems. The principle of the proposed approach is based on the knowledge Petri net formalisms, incorporating Petri nets with more general problem-solving strategies in AI using knowledge-based system techniques. The complex assembly systems are modeled and analyzed by adopting a formal representation of the system dynamic behaviors through knowledge Petri net modeling from the specifications and the analysis of those models. A template is first defined for a knowledge Petri net model, and then the models for assembly system individuals are established in the form of instances of the template. The design of assembly systems is implemented through a knowledge Petri net-based function–behavior–structure model. The research results show that the proposed knowledge Petri net approach is applicable for design, simulation, analysis and evaluation, and even layout optimization of the flexible assembly system in an integrated intelligent environment. The integration of assembly design and planning process can help reduce the development time of assembly systems.

Knowledge-based approach and system for assembly oriented design, Part I: the approach

Assembly is one of the most important stages for product development. Assembly-oriented design (AOD) is a new approach to designing assemblies, which uses a number of design and analysis tools to help the designer plan out and analyze candidate assembly schemes prior to having detailed knowledge of the geometry of the parts. Using this approach, many assembly schemes can be inexpensively evaluated for their ability to deliver the important characteristics of the final product. This research proposes a knowledge-based approach and develops an expert design system to support top-down design for assembled products. The presentation of research report is divided into two parts: the knowledge-based approach (Part I) and the knowledge-based expert design system (Part II). This paper is the first part of the report (Part I), which mainly proposes a knowledge-based approach and framework for intelligent assembly oriented design. The proposed approach focuses on the integration of product design, assemblability analysis and evaluation, and design for assembly with economical analysis. It differs from the existing approaches adopting the part-first bottom-up modeling technique, in which a hybrid model related to design problem-solving including function–behavior–structure model, feature-based geometric model, and parametric constraint model is used as a comprehensive intelligent framework for assembly modeling and design in a top-down manner from the conceptual level to the detailed level. Through the use of intelligent approach and framework, concurrent engineering knowledge can be effectively incorporated into the assembly design process, and a knowledge-based expert design system can be implemented.

Data/knowledge representation of modular robot and its working environment

This paper reports a work towards automating the design of a modular robot in the manufacturing environment. As the first as well as the most important step, a data model or data representation of all the design related information needs to be developed. This paper discusses the data representation of information needed for the computer to automatically generate a suitable modular robot configuration. A modular robot is supposed to work in a manufacturing assembly environment. Therefore, the collection of the information needed starts from such an environment. The information is further derived based on a proposed architecture of the computer-aided system for generating a modular robot configuration, which is based on two theories, i.e., cased-based reasoning and function-behaviour-structure (FBS). As a consequence, an integrated data representation of both modular robot and its environment is proposed and discussed in this paper. The integrated data representation also implies that function, behaviour and structure are related to a modular robot (as well as modular joint) are represented in the computer. EXPRESS data modelling language is used to complete the modelling work, and is found necessary for complex systems. A case study has been provided to show the capability of the developed data representations.

Function–behavior–structure paths and their role in analogy-based design

AbstractIn many creative design processes, cross-domain knowledge is required to inspire the new design result. Thus, in knowledge-based design, how we represent the cross-domain knowledge becomes a key issue. In this paper, we present a formalism for design knowledge representation. By analyzing function representation in different design domains, from graphic design and industrial design to architectural and engineering device designs, we find that although the focus of each kind of design is different, the function representation can be generalized into a small number of categories. This formalism can be used in an explorative model of design by analogy, where designs from different design domains are sources to help produce a new design.