Function Behavior Structure Research Articles

Using Linkography and Situated FBS Co-Design Model to Explore User Participatory Conceptual Design Process

To unravel the complex challenges addressed by product innovation, it is oftentimes essential for users to participate in the design process. However, there is a paucity of research in terms of in-depth exploration of the cognitive patterns and dynamic design processes of co-design with user participation in the existing design cognition research. The current study aimed to investigate the cognition activities involved in the process of co-design between user and designer at both the individual and team levels. The combination method of linkography and the situated function–behavior–structure (FBS) co-design model was carried out to encode and analyze the protocol data. The results showed that, at the individual level, designers and users adopted different design strategies to promote the progress of the design. In addition, the interaction activities among users and designers varied in different co-design processes. However, at the team level, the collaborators showed systematic thinking modes, and each design move was two-way. This cognitive strategy of the innovation team ensured the continuity and effectiveness of the co-design process. Theoretically, these findings will bring new insights for studies on team cognition activities and contribute to building user-centric design theory by uncovering the dynamic design processes of co-design with user participatory. In addition, the study makes a methodological contribution by illustrating how linkography and the situated FBS co-design model can be utilized to analyze the team cognition during co-design activities.

What distinguishes a model of systems engineering from other models of designing? An ontological, data-driven analysis

This paper investigates how the core technical processes of the INCOSE model of systems engineering differ from other models of designing used in the domains of mechanical engineering, software engineering and service design. The study is based on fine-grained datasets produced using mappings of the different models onto the function-behaviour-structure (FBS) ontology. By representing every model uniformly, the same statistical analyses can be carried out independently of the domain of the model. Results of correspondence analysis, cumulative occurrence analysis and Markov model analysis show that the INCOSE model differs from the other models in its increased emphasis on requirements and on behaviours derived from structure, in the uniqueness of its verification and validation phases, and in some patterns related to the temporal development and frequency distributions of FBS design issues.

Conduction Transformation-Based Coordination Method for Conflict in Product Adaptive Design Driven by Functional Requirements

A conduction transformation-based coordination method for product structure optimization design was proposed for the conflict between satisfying product functional requirements and realizing adaptive modification. Customer functional requirements were analyzed hierarchically, the extension domains that indicated the matching degree between customer requirement and product function were delimited; and then a multi-layer function-behavior-structure (FBS) mapping model was established. Product function-structure correlation analysis was carried out in two dimensions, i.e., “structure-structure”, and “structure-function”; a product structure behavior function (SBF) reverse conduction model was constructed based on FBS decomposition model; thus, to realize reverse conduction from structure layer to function layer. For conflict coordination in structure modification, extension transformation operations were created, the conduction transformation trigger unit was extracted, and the trigger condition was also clarified; thus, the coordination strategy for the contradiction in adaptive design could be generated by conducting active and conduction transformations. Finally, the effectiveness and feasibility of this method were verified with the structure optimization design of a delivery system of cutting machine as an example; and the discussion section emphasized that this proposed method used conduction transformation to address design conflict, instead of generating the optimal change propagation path, and how to obtain innovation inspiration.

Research on Importance Evaluation of Complex Product Parts Based on Multilayer Complex Network

The identification and evaluation of important parts play an important role in effective production arrangement and shortening the product development in the product design stage. In this paper, a complex product node importance evaluation method based on multilayer network is proposed to identify and evaluate importance parts faster. First, a complex product design expression network based on “function behavior structure (FBS)” multilayer complex network is established. Second, the evaluation index system of important design parts for complex products based on multilayer network is constructed. Third, a three-parameter grey relational model based on the fuzzy analytic hierarchy process and the Gini coefficient method is proposed. Finally, this method is available and feasible through taking the large permanent magnet synchronous centrifugal unit as an example.

A function-oriented biologically analogical approach for constructing the design concept of smart product in Industry 4.0

The development of the Industry 4.0 paradigm and the advancement of information technology have aroused new consumer requirements for smart products that are capable of context awareness and autonomous control. Nature holds huge potential for inspiring innovative design concepts that can meet the ever-growing need for smart products since biology perceive and interact with their living environment for survival. However, to date, very few studies have explored the application of natural wisdom in building innovative design concepts for smart products. This paper proposes a function-oriented design approach for smart products, by analogizing to biological prototypes. To do so, a unified functional representation, based on the Function–behavior–structure (FBS) ontology, is proposed to abstract biological prototypes, followed by a fuzzy triangular numbers-based algorithm designed to locate appropriate biological prototypes as analogical sources for smart product development. Moreover, functional innovative strategies and a hybrid design process are formulated to develop design concepts of smart products, by integrating several existing engineering design methods. Finally, an illustrative design case of a smart natural resource collecting system is used to demonstrate the workability of the proposed method.

Predicting Sequential Design Decisions Using the Function-Behavior-Structure Design Process Model and Recurrent Neural Networks

Abstract In engineering systems design, designers iteratively go back and forth between different design stages to explore the design space and search for the best design solution that satisfies all design constraints. For complex design problems, human has shown surprising capability in effectively reducing the dimensionality of design space and quickly converging it to a reasonable range for algorithms to step in and continue the search process. Therefore, modeling how human designers make decisions in such a sequential design process can help discover beneficial design patterns, strategies, and heuristics, which are essential to the development of new algorithms embedded with human intelligence to augment the computational design. In this paper, we develop a deep learning-based approach to model and predict designers’ sequential decisions in the systems design context. The core of this approach is an integration of the function-behavior-structure (FBS) model for design process characterization and the long short-term memory unit (LSTM) model for deep leaning. This approach is demonstrated in two case studies on solar energy system design, and its prediction accuracy is evaluated benchmarking on several commonly used models for sequential design decisions, such as the Markov Chain model, the Hidden Markov Chain model, and the random sequence generation model. The results indicate that the proposed approach outperforms the other traditional models. This implies that during a system design task, designers are very likely to rely on both short-term and long-term memory of past design decisions in guiding their future decision-making in the design process. Our approach can support human–computer interactions in design and is general to be applied in other design contexts as long as the sequential data of design actions are available.

CCDSF: A Computational Creative Design Systems Framework

From a mixed perspective of the fields of computational creativity and design research, we present a formal framework called Computational Creative Design Systems Framework (CCDSF) for describing, analyzing, and modeling Computational Creative Design Systems (CCDSs), either as autonomous agents or as collaborative systems integrating different agents, including both pure computational and human–computer scenarios. The CCDSF extends and unifies three existing frameworks: (i) the Function–Behavior–Structure framework for designing, to integrate design domain-specific knowledge; (ii) the Creative Systems Framework, to model design as a creative process; and (iii) the Conceptual Spaces Theory framework, to define the CCDSF at a more neutral level to be compatible with both the conceptual-space nature of the creative process and the implementation-level representation systems. The CCDSF core is a layered schema that structures the activity of designing through design concepts produced by design processes instrumented by agent-specific perception and action strategies, within a hierarchy of what we call design levels. Each layer of the schema constitutes a creative system that can implement exploratory, combinational, and transformational creativity mechanisms, including the possibility of defining the system at a meta-creative level. The hierarchical arrangement of creative systems defines the architecture of a CCDS. This architecture enables modeling CCDSs considering both the perspective of the generation and evaluation of artifacts that could be deemed creative and the precise modeling of the cognitive process of design, emphasizing its situated nature. To illustrate its usefulness, in the last part of this paper, we use the proposed framework to describe a real system in the videogame design domain.

A Shared Framework of Reference, a First Step Toward Engineers’ and Biologists’ Synergic Reasoning in Biomimetic Design Teams

Abstract Biomimetic practice requires a diverse set of knowledge from both biology and engineering. Several researchers have been supporting the integration of biologists within biomimetic design teams in order to meet those biological requirements and improve the effectiveness of biomimetic processes. However, interdisciplinarity practices create well-known communication challenges. Based on functional representations (like SAPPhIRE or function behavior structure (FBS)), several approaches to model biological information have been investigated in the literature. Nonetheless, actual communication processes within interdisciplinary biomimetic design teams are yet to be studied. Following this research axis, this publication focuses on communication noises and wonders if a shared framework of reference can be defined to improve communication between biologists and engineers? Through the comparison of processes and graphic representations between biology and engineering design, a set of guidelines is defined to structure a shared framework of reference. Within this framework, a new tool referred to as LINKAGE is then proposed to assist interdisciplinary communication during the biomimetic process.

Analyzing cognitive processes of a product/service-system design session using protocol analysis

AbstractProduct/service systems (PSSs) are increasingly found in markets, and more resources are being invested in PSS design. Despite the substantial research into PSS design, the current literature exhibits an incomplete understanding of it as a cognitive activity. This article demonstrates that the methods used to analyze product designers’ cognitive behavior can be used to produce comparable and commensurable results when analyzing PSS designers. It also generates empirical grounding for the development of hypotheses based on a cognitive study of a PSS design session in a laboratory environment using protocol analysis. This study is a part of a larger project comparing PSS design with product design. The results, which are based on the function–behavior–structure coding scheme, show that PSS design, when coded using this scheme, can be quantitatively compared with product design. Five hypotheses were developed based on the results of the study of this design session concerning where and how designers expend their cognitive design effort. These hypotheses can be used to design experiments that test them and provide the grounding for a fuller understanding of PSS design.

High school pre-engineering students’ engineering design cognition

This paper presents the results of a 2-year longitudinal study aimed at characterizing and comparing the design cognition of high school students with and without formal engineering design experiences. The students—working as dyads—engaged in design-only sessions generating solutions in response to the same engineering design challenges. The design sessions were video and audio recorded, transcribed, then segmented and coded using the Function–Behavior–Structure ontologically-based design issues and design processes coding scheme. Both the design issues and design processes were described and compared between the two high school student groups. The results of this study revealed significant differences in design issues, processes, and the cognitive effort in their problem/solution spaces between the two high school student groups when the design sessions were partitioned in two and three equal contiguous fractions. The paper concludes with a discussion regarding the significance of the differences found in this study and their pedagogical implications.

MODELING DESIGN STUDIO PEDAGOGY: A MENTORED REFLECTIVE PRACTICE

AbstractThis paper explores the notion of mentored reflective practice to describe design studio pedagogy. Students learn how to design by doing design in the studio. Design critiques are a key element in design studio pedagogy as they capture a moment where students get feedback from their tutors on their designs. The research questions addressed concern the roles of each participant during design studio reviews and their interactions with design representations. The protocol analysis methodology and the Function Behavior Structure ontology are utilized to convey our case study analysis.

On the cognitive microfoundations of effectual design: the Situated Function–Behavior–Structure framework

PurposeThe purpose of this article is to extend effectuation theory at the front end by building cognitive foundations for the effectual design process.Design/methodology/approachWe adopt an integrative conceptual approach drawing on design cognition theory to explain entrepreneurial cognition.FindingsWe find a significant gap in the entrepreneurial cognition literature with respect to effectuation processes. We thus integrate the Situated Function–Behavior–Structure framework from design theory to elaborate on the cognitive processes of effectuation, specifically with regard to the opportunity development process. This framework describes the cognitive subprocesses by which entrepreneurs means and ends are cyclically (re)formulated over time until a viable “opportunity” emerges, and the venture is formalized, or else, the entrepreneur abandons the venture and exits.”Practical implicationsUnravelling this entrepreneurial design process may facilitate more appropriate and effective design work by entrepreneurs, leading to more successful product designs. It also should facilitate the development of better design techniques and instruction.Originality/valueThis research contributes to new cognitive foundations for effectuation theory and entrepreneurial process research. It better explains how means are transformed into valuable goods over time through an iterative reconsideration of means-ends frameworks. This theoretical elaboration will expectedly facilitate additional research into the iterative cognitive processes of design and enable more formulaic design thinking.

A Computer-Aided Design Based Research Platform for Design Thinking Studies

AbstractDesign thinking is often hidden and implicit, so empirical approach based on experiments and data-driven methods has been the primary way of doing such research. In support of empirical studies, design behavioral data which reflects design thinking becomes crucial, especially with the recent advances in data mining and machine learning techniques. In this paper, a research platform that supports data-driven design thinking studies is introduced based on a computer-aided design (cad) software for solar energy systems, energy3d, developed by the team. We demonstrate several key features of energy3d including a fine-grained design process logger, embedded design experiment and tutorials, and interactive cad interfaces and dashboard. These features make energy3d a capable testbed for a variety of research related to engineering design thinking and design theory, such as search strategies, design decision-making, artificial intelligent (AI) in design, and design cognition. Using a case study on an energy-plus home design challenge, we demonstrate how such a platform enables a complete research cycle of studying designers” sequential decision-making behaviors based on fine-grained design action data and unsupervised clustering methods. The results validate the utility of energy3d as a research platform and testbed in supporting future design thinking studies and provide domain-specific insights into new ways of integrating clustering methods and design process models (e.g., the function–behavior–structure model) for automatically clustering sequential design behaviors.

An innovative device to transport electron gun automatically in nuclear power plant

ABSTRACT The electron gun, as the equipment to generate and control nuclear reactions, has been widely used in nuclear power plants of the traveling wave reactor. To avoid the damage of radiation to maintenance personnel and improve the safety and security of nuclear reaction, it was necessary to realize the automatic transportation of electron gun. However, the working conditions of the automotic devices in a nuclear radiation environment were harsh and complex, which required the high operational reliability. Combining with the features and working environment, an innovative engineering design process based on quality function deployment (QFD) and function-behavior-structure (FBS) model was proposed for designing the transport device in the nuclear industry. With the guidance of this process, firstly, the problems and technical characteristics of the transport device were analyzed by the QFD method to obtain basic functions. Then, the FBS model was used to assist the designer to express knowledge and expand the search space of the schemes of control, structure, and material. Finally, the overall design scheme of the automatic transport device was obtained by adjusting these preliminary schemes. The design provided a solution to the possible interference phenomenon in automatic transportation and achieved the maximum reliability and safety.

Agent-Based Simulation of Hardware-Intensive Design Teams Using the Function–Behavior–Structure Framework

Agile processes have been used in software development, with many case studies indicating positive changes in productivity when these processes are used. Agile processes are beginning to be applied to work beyond software-centric systems. There does not yet exist a diverse set of studies on the effectiveness of Agile processes on hardware-intensive systems. The research in this article applies a modeling and simulation-based approach which uses the function–behavior–structure framework to evaluate the effectiveness of waterfall and Agile processes. The simulation was validated against case studies of software-centric design efforts. When applied to a space launch vehicle—a highly coupled, hardware-intensive system—the simulation shows that the benefits of Agile may not be as great as those seen with software-intensive systems.

Biologically Inspired Design of Context-Aware Smart Products

Abstract The rapid development of information and communication technologies (ICTs) and cyber–physical systems (CPSs) has paved the way for the increasing popularity of smart products. Context-awareness is an important facet of product smartness. Unlike artifacts, various bio-systems are naturally characterized by their extraordinary context-awareness. Biologically inspired design (BID) is one of the most commonly employed design strategies. However, few studies have examined the BID of context-aware smart products to date. This paper presents a structured design framework to support the BID of context-aware smart products. The meaning of context-awareness is defined from the perspective of product design. The framework is developed based on the theoretical foundations of the situated function–behavior–structure ontology. A structured design process is prescribed to leverage various biological inspirations in order to support different conceptual design activities, such as problem formulation, structure reformulation, behavior reformulation, and function reformulation. Some existing design methods and emerging design tools are incorporated into the framework. A case study is presented to showcase how this framework can be followed to redesign a robot vacuum cleaner and make it more context-aware.

A Comparison of Design Activity of Academics and Practitioners Using the FBS Ontology: A Case Study

AbstractAcademics teach engineering design based on design theory and best practices, practitioners teach design based on their experience. Is there a difference between them? There appears to be little prior work in comparing the design processes of design academics and practitioners. This paper presents a case study in which the design activity of a team of academics was compared to that of a team of practitioners. The participants’ verbalizations during team discussions were coded using the Function- Behaviour-Structure (FBS) ontology. A qualitative comparison reveals that the team of practitioners constructs the design space earlier and generally spends more time in the solution space than the team of academics. Further, the team of practitioners has a significant number of direct transitions from function (F) to structure (S), while no such transitions are observed for the team of academics. Given that this is a single case study, the results cannot be used as the basis for any generalizations on how academics and practitioners compare. This is a successful proof of methodologies that lay the foundation for a series of hypotheses to be tested in a future study.

A Function-Behaviour-Structure design methodology for adaptive production systems

Adaptive production systems are a key trend in modern advanced manufacturing. This stems from the requirement for the system to respond to disruption, either in the form of product changes or changes to other operational parameters. The design and reconfiguration of these systems are therefore a unique challenge for the community. One approach to systems design is based on functional and behavioural modelling, drawn from the field of design theory. Existing approaches suffer from lack of focus on the adaptive properties of the system. While traditional production systems design focusses on the physical system structure and associated processes, new approaches based on functional and behavioural models are particularly suited to addressing the challenges of disruptive production environments resulting from Industry 4.0 and similar trends. We therefore present a Function-Behaviour-Structure (FBS) methodology for Evolvable Assembly Systems (EAS), a class of self-adaptive reconfigurable production systems, comprising an ontology model and design process. The ontology model provides definitions for Function, Structure, and Behaviour of an adaptive production system. This model is used as the input to a functional modelling design process for EAS-like systems, where the design process must be integrated into the system control behaviour. The framework is illustrated with an example taken from a real EAS instantiation using industrial hardware.

Human factors integration in manufacturing systems design using function–behavior–structure framework and behaviour simulations

Human factors integration is often achieved during detailed manufacturing system design phases. Whereas, significant decisions are token when overall primary design is set. Accordingly, this paper introduces a new design framework based on the function–behavior–structure to consider human factors earlier in the design process. The main idea consists in analysing the behavioural interactions between workers and manufacturing equipment driven from the system structure. Relevant human and health related factors to these interactions are then integrated in the analysis. These interactions are model and simulated to assess the system design using specific productivity and working conditions indicators.

Design thinking, fast and slow: A framework for Kahneman’s dual-system theory in design

In his book Thinking, Fast and Slow, Daniel Kahneman presented a model of human cognition based on two modes or ‘systems’ of thinking: system 1 thinking that is fast and intuitive and system 2 thinking that is slow and tedious. This paper proposes a framework for applying Kahneman’s model to designing based on the function–behaviour–structure ontology. It casts four instances of designing in this framework: design fixation, case-based design, pattern-language-based design and brainstorming.