Design Synthesis and Evaluation in a Design Reuse System

Author(s):  
Q. L. Xu ◽  
S. K. Ong ◽  
A. Y. C. Nee

This paper presents a design reuse approach to facilitate product conceptual design. While current design information management systems are useful in storing and retrieving product knowledge, providing effective assistance to intelligent design synthesis is still far from satisfactory, let alone the support to logical solution evaluation. Accordingly, this paper proposes an approach to automatically generate design solutions and evaluate them analytically according to multiple design objectives. To achieve these functions, a design synthesis method based on a multi-objective optimization algorithm is proposed. It makes use of existing product information to create multiple candidate solutions. Moreover, a component fitness assessment (CFA) method is proposed to evaluate the reusability of the design components. This CFA method is used in the selection of design components during the design synthesis. A design reuse system is developed to implement the methodology. It can effectively manage heterogeneous product information as well as provide computational support for design synthesis and evaluation.

2008 ◽  
Vol 392-394 ◽  
pp. 543-550 ◽  
Author(s):  
Hun Guo ◽  
Guo Xing Tang ◽  
Dun Wen Zuo ◽  
T.J. Liu ◽  
W.D. Jin

Design reuse is the application of past designs knowledge and successful experience to current design process and it is a significant method for rapid design. A knowledge-reuse-based rapid product design model is proposed and a three-factor product design iterative process model is studied. Finally, it is applied successfully in the rapid product design of construction machinery combining with the requirement of the construct machinery product design.


Author(s):  
Qiang Lu ◽  
Yupin Yang ◽  
Shahriar Akter

This chapter proposes a conceptual framework to encapsulate our understanding of how consumers' search behavior influences the content in search advertising in the hotel industry. We suggest that firms can better match consumers' preferences and needs by embracing a trade-off between price information and product information in search advertising. The dynamics of this trade-off is driven by consumers' prior product knowledge and the type of advertisers in the competitive market. Our framework suggests that travel agents tend to focus more on price advertising in their search ads, whereas hotels do not change their level of price advertising in a competitive market. More interestingly, competition from travel agents and hotels has different effects on the content of search advertising by travel agents and hotels. Our study provides critical insights in responding to different market conditions, which enhance the understanding of firms' behaviors in designing their search advertising content.


Author(s):  
Matthew D. Bauer ◽  
Zahed Siddique ◽  
David W. Rosen

Abstract Design for the life cycle practices enable the improvement of a product’s recycling, disassembly, and service characteristics, to name a few. In this paper, an approach to virtual prototyping is presented that supports product Design For Assembly, Disassembly, and Service (DFADS). The VP-DFADS system enables a designer to construct a product model, to interactively simulate an assembly, disassembly, or service process for that product, and to formulate and solve a simultaneous product/process design problem. Specific research objectives underlying this project include a reduction in VP model construction times, an improvement in information with which designers make DFADS decisions, and the development of a design synthesis method for DFADS. Although automated reasoning and synthesis technologies are outlined, the emphasis in this paper is on the integration of these technologies into the VP-DFADS system and on the usage of the system in supporting DFADS decisions. An application of the VP-DFADS system to automotive center console design illustrates the potential usefulness of the VP-DFADS approach.


Author(s):  
Bernhard Bettig ◽  
Vikram Bapat ◽  
Balaji Bharadwaj

Computers are being used extensively in the manufacturing industry to design and analyze products. In spite of the power of existing CAD systems and potential power of current Design Automation systems, we believe that they possess an inherent limitation that keeps them from aligning with and fully supporting the design process. Specifically, all of these systems are based on using parametric operators to generate valid designs. This paper examines the limitations of parametric operators for CAD and design automation and shows how “variational” methods could be used. An approach using variational methods is compared with traditional CAD and design automation methods. The paper also proposes a language of objects and relationships to represent design requirements. This work is a step towards realizing an interactive design synthesis system that can represent and satisfy design requirements.


2004 ◽  
Vol 21 (2) ◽  
pp. 109-122 ◽  
Author(s):  
Gianfranco Walsh ◽  
Kevin P. Gwinner ◽  
Scott R. Swanson

With growing competition and the increasing complexity of commercial information, interpersonal communication continues to be important to marketers. Market mavens, those consumers with general product knowledge that act as disseminators of product information, play a central role in influencing others’ purchase decisions. Previous research, which has focused on mavens’ demographics and media consumption, has neglected the motives that drive these consumer communicators. From a survey of 326 consumers, we explore how those respondents ranked high on the maven scale differ in terms of their motivations to engage in word‐of‐mouth behavior from those scoring lower on the maven scale. Our results indicate that market mavens, compared with moderate and non‐mavens, are motivated to a greater extent by a sense of obligation to share information, a desire to help others, and feelings of pleasure associated with informing others about products. The relationship between initial information diffusion, maven group, and the investigated motivations are also explored. Implications for marketers targeting mavens are offered.


2005 ◽  
Vol 5 (4) ◽  
pp. 360-372 ◽  
Author(s):  
Matt R. Bohm ◽  
Robert B. Stone ◽  
Simon Szykman

This paper describes the transformation of an existing set of heterogeneous product knowledge into a coherent design repository that supports product design knowledge archival and web-based search, display, and design model and tool generation. Guided by design theory, existing product information was analyzed and compared against desired outputs to ascertain what information management structure was needed to produce design resources pertinent to the design process. Several test products were catalogued to determine what information was essential without being redundant in representation. This set allowed for the creation of a novel single point of entry application for product information and the development of a relational database for design knowledge archival. Web services were then implemented to support design knowledge retrieval through search, browse, and real-time design tool generation. Further explored in this paper are the fundamental enabling technologies of the design repository system. Additionally, repository-generated design tools are scrutinized alongside human-generated design tools for validation. Through this process researchers have been able to improve the way in which artifact data are gathered, archived, distributed and used.


Author(s):  
Matt R. Bohm ◽  
Robert B. Stone ◽  
Simon Szykman

This paper describes the transformation of an existing set of heterogeneous product knowledge into a coherent design repository that supports product information archival, storage and reuse. Existing product information was analyzed and compared against desired outputs to ascertain what information management structure was needed to produce design resources pertinent to the design process. Several test products were cataloged to determine what information was essential without being redundant in representation. This set allowed for the creation of a novel single application point of entry for product information that maintains data consistency and allows information be easily exported. The exported information takes on many forms that are valuable to the design process such as a bill of materials and component function matrix. Enabling technologies include commercial software, XML (eXtensible Markup Language) data, XSL (eXtensible Stylesheet Language) transformation sheets and HTML (HyperText Markup Language). Through this process researchers at the University of Missouri – Rolla (UMR) have been able to dramatically improve the way in which artifact data is gathered, recorded and used.


Author(s):  
Thomas J. Connolly

This paper covers the continuing development and experimental validation of our approach to the design synthesis and control of active devices in dynamic mechanical systems. Active devices, such as electric motors and hydraulic actuators, require an external power input. An innovative feature of this synthesis approach is the use of non-physically realizable elements, i.e., elements that have negative impedances, to model the behavior of an active device. The synthesis method also features the use of bond graphs, as they facilitate modeling of multi-energy systems and devices. The procedure applies to the design or retrofit of systems for which a desired frequency response is prescribed. The overarching goal of the synthesis method is to yield options for the general framework of a controllable, stable, and parameterizable system, using simulation-based techniques. Thus the procedure yields a stable “first draft” of the active device and its control system that can be handed off to respective specialists for further refinement. Simulation results indicate that design possibilities can include purely active devices or a hybrid combination of active and passive elements. In addition, atypical control system architectures, that depart from traditional PI, PD, or PID controllers can arise from the synthesis procedure. We describe validation experiments that use electric motors and rack-and-pinion systems to achieve active control of a quarter-vehicle test article. The results will provide insight into: (1) refining the synthesis procedure to include systems that feature continuous elements, (2) partially automating the synthesis procedure to make it a more versatile design tool, and (3) practical limitations of the synthesis method.


2019 ◽  
Vol 57 (4) ◽  
pp. 953-970 ◽  
Author(s):  
Deepak Singhal ◽  
Sushant Tripathy ◽  
Sarat Kumar Jena

Purpose Acceptance of remanufactured products by the consumers is highly essential for the success of closed loop supply chain and for achieving the goal of circular economy. However, the literature shows that consumers are reluctant to purchase remanufactured products. Therefore, the study of attitude and purchase intention (PI) of the consumers toward remanufactured products becomes inevitable for popularizing these products. The paper aims to discuss this issue. Design/methodology/approach This research proposes a conceptual model to examine the critical factors influencing the PI of Indian consumers toward remanufactured products. Further, this model is empirically tested, using structural equation modeling technique, based on the data obtained from 1,534 respondents. Findings The findings of this research suggest that PI of consumers is influenced by attitude, personal benefits, remanufactured product knowledge, risk perception, subjective norm and market strategy. However, perceived behavior control and green awareness have a non-significant impact on the PI of Indian consumers. Research limitations/implications The proposed conceptual model is tested only against the data received from the students of Indian universities who possess electronic gadgets. Practical implications The circular economy can be realized through remanufacturing if the attitude of consumers is shaped positively toward remanufactured products through the dissemination of comprehensive product information. Originality/value This research is the first attempt to assess the PI of Indian consumers by developing and testing the conceptual model. Further, this research provides guidelines to remanufacturing firms for attracting the consumers toward the purchase of remanufactured products.


Author(s):  
Mehmet Murat Baysal ◽  
Mehmet I. Sarigecili ◽  
Utpal Roy

In this study, a functional and behavioral representation model for collaboration in product development is developed to represent assembly-related product knowledge, including its geometry, spatial relationships, function and behavior, which will be used to create a knowledge representation scheme to capture, store, and retrieve product knowledge. In this model, the function, behavior and artifact information is interrelated based on assembly associations. Functional and behavioral inputs and outputs are defined based on the spatial relationships in the assembly, as well as on the geometry of the product. The functional associations among artifacts define the “Behavior Model” with engineering formulas and physical rules. “Behavior Models” then define the behavior of the artifact. Behavior has four different forms for different phases in life cycle: (1) Intended Behavior in the conceptual design phase, (2) Estimated Behavior in the design phase, (3) Observed Behavior in the operation stage, and (4) Evaluated Behavior in the design and operation phases. When an unintended event (behavior) occurs, an additional function can be added to eliminate that effect. As a result, the functional and behavioral model is updated dynamically.


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