共查询到20条相似文献,搜索用时 31 毫秒
1.
V. Cheutet C.E. Catalano J.P. Pernot B. Falcidieno F. Giannini J.C. Leon 《Computers & Graphics》2005,29(6):916-930
This paper addresses the designers’ activity and in particular the way designers express an object shape in 2D sketches through character lines and how these lines form a basis for sketching shapes in 3D. The tools currently available in commercial CAS/CAD systems to manipulate the digital models are still not sufficiently suited to support design. In this paper, the so-called fully free-form deformation features (δ-F4) are introduced as a modelling method to take into account the curve-oriented stylists’ way of working. Both the advantages of a free-form surface deformation method and a feature-based approach are merged to define these high-level modelling entities allowing for a direct manipulation of surfaces through a limited number of intuitive parameters. Such features incorporate several characteristics designed to handle the uncertainties and/or inconsistencies of the designer's input during a sketching activity. In addition, a δ-F4 classification is proposed to enable a fast access to the desired shape according to its semantics and characteristics. 相似文献
2.
Alessandro CardilloAuthor Vitae Francesco FrilliciAuthor Vitae 《Computers in Industry》2011,62(4):384-397
Current product lifecycle management (PLM) systems properly support the development of a product from the embodiment design stage to detail design and manufacturing phases; on the contrary, marginal support is provided to the earliest stages of conceptual design. Besides, the front end of product development is supported by an emerging technology, namely computer-aided innovation systems (CAI), which nevertheless are still poorly integrated with the following phases of the design process. The paper presents an original computer-based approach aimed at supporting embodiment design phases, which results very efficient for improving the interoperability of CAI and PLM systems and thus at extending the domain of application of these tools. The potential of the approach proposed by the authors is clarified through three exemplary case studies. 相似文献
3.
In providing a better experience to users in terms of product usage, we focus on the important concept of a user-centred design (UCD), and explore a new approach to user experience (UX), with the effort to understand experience-driven innovation. Based on the conceptual framework of experiential network and the results of multiple case studies covering 643 successfully designed products or services providing an optimised UX, we categorise the UX context into the following four representative types: individualisation, combination, integration, and ecosystem. Furthermore, we identify the essential UCD concepts that reflect the core needs and expectations of users in each of the designed contexts, that is, specialty, usefulness, usability, and fluency. Finally, we discuss the dynamic concepts that help achieve a successful experience innovation. We expect these findings to play a crucial role in the development of novel design concepts or strategies, not only to better understand the needs of contemporary users, but also to better understand the dynamics of innovation. 相似文献
4.
This paper presents the experiences of improving an existing surveyor-training tool, called SimuSurvey, using a user-centered approach. As few users were involved during the initial development of SimuSurvey, many instructors and students were skeptical about the innovative application of SimuSurvey in actual surveying classes. To address this problem, we proposed and applied an iterative and incremental user-centered design method to redevelop the tool. Three hundred and forty-six users including 5 instructors, 4 surveying experts, and 337 students, with different backgrounds were introduced at different stages of the redevelopment process. After two iterations of complete redevelopment cycles with five intermediate prototype systems generated, a much improved version of the tool, namely SimuSurvey R2, was developed. From the final interviews with students and the field observation on user groups, SimuSurvey R2 has been shown to be more practical for use in actual surveying classes. In addition, the proposed user-centered approach and several techniques it employs, such as storyboards and content diagrams, paper-based prototyping, high-fidelity prototyping, and usability tests, have been found to be effective for improvement (or redevelopment) of software systems. 相似文献
5.
With increased market pressures now imposed on companies there is a greater requirement for information and knowledge to be considered as fundamental resources; the need to rapidly provide high quality products of high performance and reliability is forcing companies to change the way in which they manage them. The goal of this paper is to identify the pertinent research issues that will need to be considered in order for knowledge (and information) to be successfully integrated into future product development. This will be achieved by presenting the key findings from empirical and simulation studies of information and knowledge access in engineering design, within a number of different design activities. In particular, this will show the extent to which engineers rely on their personal knowledge. 相似文献
6.
This paper suggests that a software process can be viewed as an instance of a business process. Therefore software process improvement might be achieved by applying the concepts of Business Process Re-engineering (BPR). BPR is introduced and the recent work of Jacobson, using object-oriented concepts to construct a BPR framework, is described. The paper critiques Jacobson's approach as being essentially reductionist, and presents an alternative approach, State-Behaviour Modelling (SBM), that utilizes systems principles in the analysis of problem situations, while generating object models. The application of SMB to model and improve a component of a software development process, is presented. 相似文献
7.
In collaborative crowdsourcing communities for open innovation, users generate and submit ideas as idea co‐creators. Firms then select and implement valuable ideas for new product development. Despite the popularity and success of these open innovation communities, relatively little is known about the factors that determine the implementation of the user‐generated ideas. Based on research on individual creativity, we propose a conceptual model integrating users' previous experience, idea presentation characteristics and feedback valence to explain the likelihood of idea implementation. We validate our research model with a panel data analysis of 43 550 ideas submitted by 16 360 users in the MIUI new product development community hosted by Xiaomi, a large electronics manufacturing company in China. We find an inverted U‐shaped relationship between users' past successful experience and idea implementation. Furthermore, the length of ideas is positively associated with the likelihood of idea implementation. There is also an inverted U‐shaped relationship between supporting evidence and idea implementation. Finally, we demonstrate the negative effect of positive feedback and the positive effect of negative feedback on idea implementation. These findings offer rich insights to understand the phenomenon of open innovation better. Theoretical and practical implications are discussed. 相似文献
8.
Vassilis Agouridas Alison McKay Henri Winand Alan de Pennington 《Requirements Engineering》2008,13(1):19-48
This paper reports results of research into the definition of requirements for new consumer products––specifically, electro-mechanical
products. The research dealt with the derivation of design requirements that are demonstrably aligned with stakeholder needs.
The paper describes a comprehensive process that can enable product development teams to deal with statements of product requirements,
as originally collected through market research activities, in a systematic and traceable manner from the early, fuzzy front
end, stages of the design process. The process described has been based on principles of systems engineering. A case study
from its application and evaluation drawn from the power sector is described in this paper. The case study demonstrates how
the process can significantly improve product quality planning practices through revision of captured product requirements,
analysis of stakeholder requirements and derivation of design requirements. The paper discusses benefits and issues from the
use of the process by product development teams, and identifies areas for further research. Finally, the conclusions drawn
from the reported research are presented.
相似文献
Vassilis AgouridasEmail: |
9.
With rapid developments of high-tech in various fields, there appear more critical requirements for special functions of components/products, which can be satisfied only by using heterogeneous materials: composite materials, functionally graded materials, or heterogeneous materials with a periodic microstructure. However, currently there exists no systematic and effective method for designing components made of these heterogeneous materials. This paper develops such a computer-aided design method, under the guide of Axiomatic Design, which can apply the functions of current CAD/CAE software. With the design method, all the information about both configuration and materials of a heterogeneous component, needed for creating its CAD model, can be obtained. 相似文献
10.
The goal of applying collaborative product development in industry has raised the need to develop software tools supporting system integration and group collaboration. Current methods and tools mainly focus on the collaborative creation of design components and assemblies. However, few of them support the collaborative work in developing simulation models so that proposed design concepts and solutions can be evaluated by integrating expertise from several disciplines. The purpose of this research is to develop a distributed and interactive system on which designers and experts can work together to create, integrate and run simulations for engineering design. To develop such a system, a number of issues, e.g. effectiveness and efficiency of modeling work, the re-use of models, interaction and cooperation, accuracy of simulation, collaborative operation on models, etc., need to be addressed. This paper describes an open architecture to developing simulations for engineering design in a distributed and collaborative environment, identifies a set of key issues raised in this architecture, and presents the techniques employed in our solution. 相似文献
11.
Applying methods of mass customization to the empirical process can improve product development process efficiency and reduce
time and cost. Empirical methods are used to develop predictions of product behavior in conjunction with analytical methods
or instead of analytical methods. These empirical methods represent a complete sub-product development process within the
overall product development process. Application of process decomposition and planning used in mass customization can improve
the efficiency, lower the time and cost of these empirical processes. This paper presents a method for applying principles
of mass customization to the empirical sub-processes within a product development process. Two case studies are also presented
to demonstrate the method. 相似文献
12.
In this paper we present the state of the art in the field of computer aided innovation (CAI) from a new product development (NPD) perspective. Based on a holistic understanding of the innovation process and its support by ICT, we provide an overview of the emerging issue of CAI in the NPD field. In particular, the latest research on the concept of CAI, its categorization, potential benefits of CAI, trends in the CAI supply, and issues of CAI usage and implementation are discussed and summarized in this article. Current publications indicate that the emerging field of CAI has recently been getting more attention in the NPD area, but this research needs to integrate further the insights from other research areas in the CAI field. It must also make a better distinction between generic ICT and CAI to achieve a more specific and holistic perspective on CAI in the future. 相似文献
13.
Cloud-based design manufacturing (CBDM) refers to a service-oriented networked product development model in which service consumers are enabled to configure, select, and utilize customized product realization resources and services ranging from computer-aided engineering software to reconfigurable manufacturing systems. An ongoing debate on CBDM in the research community revolves around several aspects such as definitions, key characteristics, computing architectures, communication and collaboration processes, crowdsourcing processes, information and communication infrastructure, programming models, data storage, and new business models pertaining to CBDM. One question, in particular, has often been raised: is cloud-based design and manufacturing actually a new paradigm, or is it just “old wine in new bottles”? To answer this question, we discuss and compare the existing definitions for CBDM, identify the essential characteristics of CBDM, define a systematic requirements checklist that an idealized CBDM system should satisfy, and compare CBDM to other relevant but more traditional collaborative design and distributed manufacturing systems such as web- and agent-based design and manufacturing systems. To justify the conclusion that CBDM can be considered as a new paradigm that is anticipated to drive digital manufacturing and design innovation, we present the development of a smart delivery drone as an idealized CBDM example scenario and propose a corresponding CBDM system architecture that incorporates CBDM-based design processes, integrated manufacturing services, information and supply chain management in a holistic sense. 相似文献
14.
Faster time-to-market for new products is important for hi-tech corporations to gain premium pricing and higher sales volume. An activity overlapping strategy is a frequently used technique in practice for quicker product launch. However, complex interaction patterns between components and activities increase the chance of unanticipated iterations that may lead to late time-to-market. This paper presents an overlapping process model to analyze the impact of process structure on the lead-time of a complex development project. Information evolution and change sensitivity, which are two major factors for activity overlapping, are considered in the proposed model and a simulation algorithm is developed to analyze the impacts of process structure on the development lead-time. The example of a battle tank simulator project is used to illustrate the proposed approach. The computational experiment shows that the proposed approach allows project managers to design a better process structure to minimize the risk of being late-to-market. 相似文献
15.
16.
Kansei engineering as a powerful consumer-oriented technology for product development 总被引:19,自引:0,他引:19
Nagamachi M 《Applied ergonomics》2002,33(3):289-294
Kansei engineering was founded 30 years ago, as an ergonomics and consumer-oriented technology for producing a new product. When a consumer wants to buy something, he/she will have a kind of feeling and image (kansei in Japanese) in his/her mind. If the consumer's feeling could be implemented in the new product, he/she would be more satisfied with the product. Kansei engineering aims at translation of kansei into the product design field including product mechanical function. This is why it is called the consumer-oriented aspect. There are many products in Japan which have applied kansei engineering. Recently, it has also been applied to construction products as well as to community design. 相似文献
17.
An essential requirement in integrating tasks in product development is to have a seamless exchange of product information through the entire product lifecycle. A key challenge in the integration is the exchange of shape semantics in terms of understandable labels and representations. A unified taxonomy is proposed to represent, classify, and extract shape features. This taxonomy is built using the Domain-Independent Form Feature (DIFF) model as the representation of features. All the shape features in a product model are classified under three main classes, namely, volumetric features, deformation features and free-form surface features. Shape feature ontology is developed using the unified taxonomy, which brings the shape features under a single reasoning framework. One-to-many reasoning framework is presented for mapping semantically equivalent information (label and representation) of the feature to be exchanged to target applications, and the reconstruction of the shape model automatically in that target application. An algorithm has been developed to extract the semantics of shape features and construct the model in the target application. The algorithm developed has been tested for shape models taken from literature and test cases are selected based on variations of topology and geometry. Results of exchanging product information are presented and discussed. Finally, the limitations of the proposed method for exchanging product information are explained. 相似文献
18.
Yuh-Jen Chen Author Vitae 《Computers in Industry》2010,61(7):659-675
This study presents a systematic approach to developing a knowledge integration and sharing mechanism for collaborative molding product design and process development. The proposed approach includes the steps of (i) collaborative molding product design and process development process modeling, (ii) an ontology-based knowledge model establishment, (iii) knowledge integration and sharing system framework design, (iv) ontology-based knowledge integration and sharing methods development, and (v) ontology-based knowledge integration and sharing mechanism implementation. The mechanism can support collaborative molding product design and process development by providing functions of knowledge integration and sharing. Results of this study facilitate the knowledge integration and sharing of collaborative molding product design and process development to satisfy the product knowledge demands of participants, and thus increase molding product development capability, reduce molding product development cycle time and cost, and ultimately increase molding product marketability. 相似文献
19.
针对目前产品设计过程规划研究中存在的不足,在充分考虑实际设计过程中存在的各种不确定因素的基础上,以产品开发过程中的全体任务为规划对象,以设计迭代时间和成本为目标,将设计过程规划问题描述为基于仿真的随机优化问题进行处理。提出一种模型求解的混合遗传算法,该算法引入最优计算量分配技术进行样本分配,极大地提高了算法的搜索效率,有效地改善了遗传算法搜索的可靠性。以汽轮机轴承转子系统的设计为例,对提出的方法的有效性进行了验证,仿真结果表明,该建模方法有效且算法求解效率高。该方法可推广应用于各种产品设计过程的规划,具有普遍意义。 相似文献
20.
This article examines current developments in the field of CAI. The field of CAI has been driven by two major recent developments. One being the technological possibilities in the software field commonly referred to as “Web 2.0”. The other being a strategic paradigm shift from closed to open innovation in many companies. Both developments lead to a new form of CAI which have been analyzed in detail and named Open CAI 2.0. This paper discusses the benefits and challenges for software providers and users arising from this new evolutionary step of CAI. 相似文献