| 1. |
- Alonso Fernandez, Iñigo, 1985, et al.
(författare)
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Reconciling Platform vs. Product Optimisation by Value-Based Margins on Solutions and Parameters
- 2024
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Ingår i: Journal of Engineering Design. - 1466-1837 .- 0954-4828. ; In Press
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Tidskriftsartikel (refereegranskat)abstract
- Engineering companies face the challenge of optimising margins within product platforms while balancing individual product optimisation and maximising platform commonality. Key obstacles include organizational silos, diverse design variables, design space allocation, and varying time perspectives. This paper proposes a value-based modelling methodology that integrates both internal and external variety within the manufacturer. Using an automotive Head-Up Display (HUD) case study, we demonstrate how to effectively utilise platform margins to maximise technological variety and minimise internal variety, thereby enhancing long-term system value. This approach helps design teams understand the implications of their decisions, optimise platform margins to meet evolving technological demands, reduce costs, and maximise value. Our findings advance the understanding of margin optimisation in product platforms and support informed decision-making for engineering companies facing conflicting objectives
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| 2. |
- Alonso-Rasgado, Teresa, et al.
(författare)
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The design of functional (total care) products
- 2004
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Ingår i: Journal of engineering design (Print). - : Informa UK Limited. - 0954-4828 .- 1466-1837. ; 15:6, s. 515-540
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Tidskriftsartikel (refereegranskat)abstract
- Total care products (functional products) are integrated systems comprising hardware and support services. The functional product supplier provides all the support systems that are required to keep the hardware operable. The support systems are often referred to as 'services'. The success of total care products depends upon both hardware and services. Well established methods exist for the design of hardware. In comparison, design processes and methods for services are not so well developed. This paper is concerned with the definition and design of functional products, in particular design of services in the context of total care products. Literature from the service sector is reviewed extensively to identify the principal components of service design. The information required for the execution of each component of the process, and outputs of each component, are considered with respect to the design of total care products. Of particular interest is the customer-supplier relationship throughout the design process. The design of a total care product may involve the creation of a new service system or there may be an existing system that may be adapted or developed. Similarly, hardware may be mature or be a completely new product. There are therefore number of permutations of novelty and maturity in the hardware and service components of a new total care product. The design processes and methods employed must take into account the required degree of novelty in each component. Typically a customer will be given a guarantee of a certain level of availability of the total care product. This brings into sharp focus the reliability and maintainability of the total system. Further research directions in total care product design are identified especially related to functional reliability
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| 3. |
- Andersson, Alf
(författare)
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Comparison of sheet-metal-forming simulation and try-out tools in the design of a forming tool
- 2004
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Ingår i: Journal of Engineering Design. - : Informa UK Limited. - 1466-1837 .- 0954-4828. ; 15:6, s. 551-561
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Tidskriftsartikel (refereegranskat)abstract
- Today, sheet-metal-forming simulation is a powerful technique for predicting the formability of automotive parts. Compared with traditional methods such as the use of try-out tools, sheet-metal-forming simulation enables a significant increase in the number of tool designs that can be tested before hard tools are manufactured. Another advantage of sheet-metal-forming simulation is the possibility to use it at an early stage of the design process, for example in the preliminary design phase. Today, the accuracy of the results in sheet-metal-forming simulation is high enough to replace the use of try-out tools to a great extent. At Volvo Car Corporation, Body Components, where this study has been carried out, sheet-metal-forming simulation is used as an integrated part in the process of tool design and tool production.
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| 4. |
- Andersson, Alf
(författare)
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Information Exchange within the area of tool design and sheet-metal-forming simulations
- 2001
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Ingår i: Journal of Engineering Design. - : Informa UK Limited. - 1466-1837 .- 0954-4828. ; 12:4, s. 283-291
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Tidskriftsartikel (refereegranskat)abstract
- Today, shortened lead-times in the automotive industry have raised requirements on rapid information exchange. The increased use and access to the Internet have created possibilities to transfer information to people independent of location. This development, together with the increased speed in the portable computer technology, has opened possibilities for bringing results from sheet-metal-forming simulations directly to the customer. Previously, the results were presented with pictures; now it is possible to use animations. The only requirement is to have access to a post-processor or a viewer that is powerful enough to handle the results. The advantage with animated results is the improved possibilities to follow the sheet-metal-forming process. In this project, the methodology for reporting results from sheet-metal-forming simulations at Volvo Cars Body Components is studied. A potential for improvement would be possible if the reporting procedure is changed from paper copies to a database structure. In the database the results should be stored as files with animated results that the user is able to rotate and zoom. This methodology will contribute to faster and more accurate decisions because it will be based on current information and the user could easily analyse the results without access to special programs.
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| 5. |
- André, Samuel, 1986-, et al.
(författare)
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The design platform – a coherent platform description of heterogeneous design assets for suppliers of highly customised systems
- 2017
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Ingår i: Journal of engineering design (Print). - : Taylor & Francis. - 0954-4828 .- 1466-1837. ; 28:10-12, s. 599-626
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Tidskriftsartikel (refereegranskat)abstract
- Companies developing highly customised products are continuously faced with fluctuating requirements during the early and late stages of the product development (PD) process. This differs from companies that develop end-consumer products, which uses fixed specifications and where product platforms have been a successful enabler for efficient customisation. However, in the past, product platforms have not been able to fully support companies working in an engineer-to-order business environment. This article outlines the results from a three-year collaborative research project between academics within the area of engineering design and practitioners from the engineer-to-order industry. The research introduces a design platform (DP) that aims to support the development of customised products when traditional platform concepts do not suffice. The platform approach provides a coherent environment for heterogeneous design assets to be used in PD by supporting both the design activity and the finished solutions. The needs and abilities regarding such a platform were investigated through a series of interviews and workshops at four companies. Then, the DP was modelled and support tools were developed. Finally, company representatives evaluated the complete DP and its applications, reporting promising results.
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| 6. |
- Arjomandi Rad, Mohammad, 1987, et al.
(författare)
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Image regression-based digital qualification for simulation-driven design processes, case study on curtain airbag
- 2023
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Ingår i: Journal of engineering design (Print). - : Taylor & Francis. - 0954-4828 .- 1466-1837. ; 34:1, s. 1-22
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Tidskriftsartikel (refereegranskat)abstract
- Today digital qualification tools are part of many design processes that make them dependent on long and expensive simulations, leading to limited ability in exploring design alternatives. Conventional surrogate modelling techniques depend on the parametric models and come short in addressing radical design changes. Existing data-driven models lack the ability in dealing with the geometrical complexities. Thus, to address the resulting long development lead time problem in the product development processes and to enable parameter-independent surrogate modelling, this paper proposes a method to use images as input for design evaluation. Using a case study on the curtain airbag design process, a database consisting of 60,000 configurations has been created and labelled using a method based on dynamic relaxation instead of finite element methods. The database is made available online for research benchmark purposes. A convolutional neural network with multiple layers is employed to map the input images to the simulation output. It was concluded that the showcased data-driven method could reduce digital testing and qualification time significantly and contribute to real-time analysis in product development. Designers can utilise images of geometrical information to build real-time prediction models with acceptable accuracy in the early conceptual phases for design space exploration purposes.
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| 7. |
- Axeborn, M., et al.
(författare)
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Dynamic product development of rain protection for vans
- 2004
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Ingår i: Journal of engineering design (Print). - : Informa UK Limited. - 0954-4828 .- 1466-1837. ; 15:3, s. 229-248
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Tidskriftsartikel (refereegranskat)abstract
- This paper describes a successful development of a new accessory rain protection for vans for which the principles of Dynamic Product Development (DPD) was used. The development was done and documented during 10 weeks. The result of the project is a prototype model for Opel Combo that unfolds automatically when the doors are opened (see figure 1). The work resulted in a Unigraphic model that makes it possible to easily make rain protections for other types of vans. What characterizes the new rain protection is that it is easy to mount, easy to use, possible to open doors 180° and that it takes a limited space when folded. Due to the materials recommended, it is environmental friendly.
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| 8. |
- Björk, Eva-Stina, et al.
(författare)
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Aspects of consideration in product development research
- 2007
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Ingår i: Journal of engineering design (Print). - London : Taylor & Francis. - 0954-4828 .- 1466-1837. ; 18:3, s. 195-207
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Tidskriftsartikel (refereegranskat)abstract
- One reason for conducting research on product development processes is to improve the usability in methods and tools for companies to be more competitive and efficient. However, the transfer of research findings over to industry has been shown to be slow and incremental, which could be seen as a result of bad usability and/or low acceptability in research findings from studies on industrial product development processes.According to our research and practice experience, we have found that, to grasp what really happens on a daily basis in a development project, to get the opportunity to reflect upon it, and to understand the complex nature of a development process, it is necessary to conduct insider action research (IAR), which is a qualitative approach. So far, the traditional outsider perspective using a quantitative research approach has been dominant. Conducting IAR means that the researcher is present and intervenes most of the time in a development project either as project leader, team member or observer.To improve the opportunities for implementation of research findings (which is an important issue for society as a whole) and to guarantee trust in presented research findings, IAR has proved to be efficient in the studied projects. As the research situation becomes unique for each product development process, trust in the research findings is strongly related to the presence of the researcher in the development process. Reliability and credibility in terms of provable data can be filed in diaries, email communications, and so on, and saved to be available if required.
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| 9. |
- Björnfot, Anders, et al.
(författare)
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A design structural matrix approach displaying structural and assembly requirements in construction : a timber case study
- 2007
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Ingår i: Journal of engineering design (Print). - : Informa UK Limited. - 0954-4828 .- 1466-1837. ; 18:2, s. 113-124
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Tidskriftsartikel (refereegranskat)abstract
- A fundamental demand of construction design is human safety from structural failure. As a consequence, buildings generally tend to be structurally optimized with cost as the main target parameter. However, a cost-suboptimized structural design often leads to poor constructability decisions with subsequent waste. This paper presents initial research in the development of a design structural matrix (DSM) method able to identify constructability obstacles between structural design and assembly and thus eliminate waste. Empirical data based on a case study of long-span timber structures is used in the development and analysis of the method. The DSM was found to be a holistic tool for systematic consideration of structural design and constructability requirements by providing a standardized system view, a detailed element view, and physical and functional interactions among elements and modules. The DSM was also shown to aid in detailed design and production management through the use of simple matrix tools.
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| 10. |
- Borgue, Olivia, 1989, et al.
(författare)
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Design for test and qualification through activity-based modelling in product architecture design
- 2021
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Ingår i: Journal of Engineering Design. - : Informa UK Limited. - 1466-1837 .- 0954-4828. ; 32:11, s. 646-670
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Tidskriftsartikel (refereegranskat)abstract
- Test and qualification (T&Q) phases take a significant portion of the time to market for critical products in the space industry, especially when introducing new technologies. Since T&Q are treated as standard procedures, they tend to be independent of the architectural design phases and kept away from design decisions. However, when introducing new technologies, qualification procedures may differ from those established in regular design scenarios, and the estimation of qualification costs and duration is problematic. There is a lack of design for qualification methods capable of modelling these activities in early phases and use those models to support the architecture design of products with affordable test and qualification phases. In this article, a computer-assisted, model-based design method to model T&Q activities concerning early product architecture designs is proposed. Product architecture alternatives, test schedules and cost are connected through the quantification of T&Q drivers and driver rates. The design method is demonstrated using a case study about electric propulsion for satellites. The method is applicable for design situations where the choice of technology has a strong dependence on the qualification procedure.
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