| 1. |
- Eriksson, Martin, et al.
(författare)
-
A process model for enhanced integration between computer-based design analysis and engineering design
- 2016
-
Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- The findings from a survey in industry and from an extensive literature survey revealed the need for the development of an integrated process model for computer-based design analysis (CBDA) facilitating the interactions in the engineering design process in mechanical engineering on an operational level. CBDA is here confined to the utilization of advanced computational methods and tools from computer aided engineering (CAE), such as computational structural mechanics (CSM), computational fluid dynamics (CFD) and multi-body systems (MBS). In order to facilitate integration to the multitude of engineering design process models in industrial practice, including overall processes such as product innovation and product development, the process model needs to be adaptive and generic. Generic should here be interpreted as not being dependent on any specific type of product, engineering design process, or on any specific type of product innovation and/or product development process models utilized by an enterprise. Resulting from synthesis processes based on the findings from surveys and experiences gained from design analysis projects in industrial practice, the generic design analysis process (GDA) model was developed. The application of the GDA process model is exemplified by four examples, which have been utilized for validation of the process model.
|
|
| 2. |
- Eriksson, Martin, et al.
(författare)
-
Integrating engineering design and design analysis activities at an operational level
- 2017
-
Ingår i: Proceedings of the 11th International Workshop on Integrated Design Engineering - IDE Workshop'17. - Magdeburg. - 9783941016118 ; , s. 69-80
-
Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Computer-based design analysis is nowadays of utmost importance for most engineering design projects. However, this brings some challenges, among them that of the collaboration between engineering designers and design analysts. Since they work with, and are responsible for, different areas, they do not necessarily have full insight into each other’s way of working. The issue of integration between the design analysis process and the engineering design process is of major significance for providing an increase in efficiency and effectiveness in engineering design and development of products. In this work, an approach is proposed aiming at providing this increase in efficiency and effectiveness. Based on the analysis of the information workflow between the engineering design process and the design analysis process, a mapping of the necessary interactions between engineering designers and design analysts can be made. The presented approach facilitates this mapping. An application of this approach to an industrial project is also presented.
|
|
| 3. |
- Eriksson, Martin, et al.
(författare)
-
Utilizing the generic design analysis (GDA) process model within an extended set of design analysis contexts
- 2017
-
Ingår i: Proceedings of the International Mechanical Engineering Congress & Exposition - IMECE'17. - New York : ASME Press. - 9780791858462 ; 11, s. 011-028
-
Konferensbidrag (refereegranskat)abstract
- In most industrial product development projects, computer-based design analysis, or simply design analysis, is frequently utilized. Several design analysis process models exist in the literature for the planning, execution and follow-up of such design analysis tasks. Most of these process models deal explicitly with design analysis tasks within two specific contexts: the context of design evaluation, and the context of design optimization. There are, however, several more contexts within which design analysis tasks are executed. Originating from industrial practice, four contexts were found to represent a significant part of all design analysis tasks in industry. These are: 1. Explorative analysis, aiming at the determination of important design parameters associated with an existing or predefined design solution (of which design optimization is a part). 2. Evaluation, aiming at giving quantitative information on specific design parameters in support of further design decisions. 3. Physical testing, aiming at validating design analysis models through physical testing, that is, determining the degree to which models are accurate representations of the real world from the perspective of the intended uses of the models. 4. Method development, that is the development, verification and validation of specific guidelines, procedures or templates for the design analyst and/or the engineering designer to follow when performing a design analysis task. A design analysis process model needs to be able to deal with at least these four. In this work, a process model named the generic design analysis (GDA) process model, is applied to these four contexts. The principles for the adaptation of the GDA process model to different contexts are described. The use of the GDA process model in these contexts is exemplified with industrial cases: explorative analysis of design parameters of a bumper beam system, the final physical acceptance tests of a device transportation system (collision test, drop test, vibration test), and the method development of a template for analyzing a valve in a combustion engine. The "Evaluation" context is not exemplified as it is the most common one in industry. The GDA process model has been successfully used for the four contexts. Using the adaptation principles and industrial cases, the adaptation of the GDA process model to additional contexts is also possible.
|
|
| 4. |
- Motte, Damien, et al.
(författare)
-
Development of a computer-aided fixture design system for lightweight grippers in the automotive industry
- 2016
-
Ingår i: International Journal of Design Engineering. - Genève : InderScience Publishers. - 1751-5874 .- 1751-5882. ; 6:3, s. 237-261
-
Tidskriftsartikel (refereegranskat)abstract
- The need for dedicated fixtures for flexible manufacturing systems is increasing, as dedicated fixtures are lighter, more compact and, more accurate than flexible fixtures. The main challenges are that parts and processes are more and more complex, which requires designing novel or complex dedicated fixtures, and that, for one given flexible fixture to be replaced, several variants of such dedicated fixtures must be designed to hold a variety of individual parts, without imposing increased costs and delays. The systematic fixture design method and computer-aided design fixture system (CAFDS) developed and applied for the presented industrial case—novel design of lightweight (carbon fibre composite) robot grippers—is a possible approach to address these issues.
|
|
| 5. |
- Motte, Damien, et al.
(författare)
-
Evaluation of a method supporting the integration of packaging development into product development using an assessment framework for methodologies under development
- 2018
-
Ingår i: Proceedings of the 12th International Symposium on Tools and Methods of Competitive Engineering - TMCE'18. - 9789461869104 ; , s. 471-486
-
Konferensbidrag (refereegranskat)abstract
- This paper presents the evaluation of a method supporting the integration of packaging development into product development through the use of an assessment framework for methodologies under development. While the evaluation of the integration method itself is critical for its further development the main objective is to use this evaluation as a further testing of the assessment framework. The assessment framework has only been tested once in its current version and replications are needed. The results of the testing of the support method indicate that it has high consistency but should be further developed with regards to simplicity of use, and overall attractiveness. About the framework, only minor changes were needed to assess the support method. The testing also shows that the framework can also be used for the assessment of methods, not only methodologies.
|
|
| 6. |
- Motte, Damien, et al.
(författare)
-
Modelling of the integration tasks of product and packaging development
- 2017
-
Ingår i: Proceedings of the 29th NOFOMA Conference - NOFOMA'17. - 9789177533375 ; , s. 532-547
-
Konferensbidrag (refereegranskat)abstract
- PurposeThere is a growing demand for a concurrent development of product and packaging in order to better take into account the supply chain needs. Different tasks are required to integrate packaging and product development: 1) At the strategic level, it is necessary to define or refine an integrated development policy; 2) For each new development project, an adaptation of this policy must be undertaken; 3) Under the execution of each project, relevant decisions need to be made when a deviation from the development plan occurs. These integration tasks are knowledge-intensive and a rigorous modelling of these tasks would help the manager filtering and structuring the necessary knowledge and make more informed decisions.Design/methodology/approachThe integration tasks have been modelled with CommonKADS, a knowledge engineering methodology. It has contributed to clearly define which activities and which knowledge elements are necessary.FindingsThe tasks have been modelled and the necessary knowledge elements identified. Some elements are generic, while for some others the knowledge base need to be company-specific.Research implications and limitationsThe formal modelling makes it possible to develop support for these integration tasks (computer-based or not). The task models need however to be refined with empirical data. It is also necessary to assess empirically the acceptance of this approach by managers before it can be diffused in industry.Original/valueIntegration aspects in development are generally dealt with general process models. The proposed approach gives more guidance to the manager. The used formalism ensures the coherency of the modelled tasks.
|
|
| 7. |
- Petersson, Håkan, 1962-
(författare)
-
Template-Based Design Analysis : An Alternative Approach for the Engineering Designer to Perform Computer-Based Design Analysis
- 2016
-
Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- The current trend in industry to encourage engineering designers to take an active part in the analysis of their own design solutions is apparent in many companies today, domestically as well as abroad.From a research project with the objective to develop a computer-based design system for the design of lightweight grippers, one of the major difficulties was to overcome the system users’ lack of knowledge and experience in the design of lightweight structures and Computer-Based Design Analysis (CBDA). CBDA here refers to the use of analysis tools such as Finite Element Analysis (FEA) and computer-based structural optimization. In order to handle these difficulties, the author introduced the use of templates. In the given context, a template refers to an especially preformatted code, which contains the implemented information/knowledge necessary to perform a specific task on an operational level. It should be noted that the use of templates as a means of support in performing a specific design or analysis task is not a new phenomenon in industrial practice. Inspired by the opportunities provided by the template approach, the main objective set out for the thesis project was to facilitate the active participation of the engineering designers in performing CBDA singlehandedly, or in any other organizational setting, by utilizing a Template-Based Design Analysis (TBDA) approach, as an integrated part of their activities within the engineering design process.The evolutionary research approach for the development of the TBDA approach is based on surveys in Swedish as well as international industry, literature surveys, the development of a Generic Design Analysis (GDA) process model (facilitating integration of the activities between CBDA and engineering design) and a number of demonstrator projects to deepen the insights into TBDA. Note that as the TBDA approach is intended for use in industrial practice, the approach is independent of specific engineering design and product development processes utilized in industry.The conclusion of the thesis work clearly supports the claim that TBDA is not only a competitive approach to current alternatives in supporting the engineering designers performing CBDA, but also of a complementary nature providing functionality not included in the alternative approaches currently used in industrial practice.
|
|
| 8. |
- Petersson, Håkan, et al.
(författare)
-
The engineering designer in the role of a design analyst – An industrial survey
- 2015
-
Ingår i: Proceedings of the NAFEMS World Congress 2015.
-
Konferensbidrag (refereegranskat)abstract
- Traditionally, design analysts are solely responsible for all computerbased design analysis (CBDA). CBDA refers to quantitative design analyses utilising computational tools in the engineering design and development of technical solutions. There are currently limited insights into and knowledge of tools and methods needed to facilitate the use of CBDA by engineering designers. In order to gather information on this aspect of CBDA, an industry survey has been performed.77 persons completed the survey (16% affiliated to NAFEMS) open for twelve weeks during October-December, 2014. Around 35% answered that within their companies CBDA is used by engineering designers, and 28% of those who are not currently doing so expect to do so in the future. Linear static analysis is the most frequent type of analysis performed by engineering designers. The benefits put forward by the respondents in favour of involving engineering designers in CBDA are: it allows early evaluation of concept candidates, shortens lead time, frees resources for the analysis department, and reduces costs. 26% of the respondents answered that there is resistance from the analysis department against allowing engineering designers to perform CBDA, 19% within the engineering design de-partment are also against this involvement and 26% answered that there has been no problem associ-ated with this involvement.Even though the engineering designer performs CBDA on his/her own, supervision (56%) and quali-ty assurance of the analysis results (59%) is the responsibility of the design analysts. This is also the case regarding the development of tools and methods to be used by the engineering designers as well as instruction and training of the engineering designers.
|
|
| 9. |
- Petersson, Håkan, 1962-, et al.
(författare)
-
Using Templates To Support The Engineering Designer Performing Computer-Based Design Analysis
- 2015
-
Ingår i: ASME 2015 International Mechanical Engineering Congress and Exposition. - New York : ASME Press. - 9780791857540
-
Konferensbidrag (refereegranskat)abstract
- In their quest for a more efficient and effective utilization of the resources allocated to engineering design projects, and thus to the overall product development project from which the current design task(s) originate, an increasing number of companies allow engineering designers to perform Computer-Based Design Analysis (CBDA) on their own – CBDA is here confined to quantitative analyses using finite element-based structural and thermal analyses, Computational Fluid Dynamics, and Multi-Body Systems. Since all of these tools require a certain level of expertise in order to be successfully utilized in industrial practice, the types of analyses performed by the engineering designers are confined to simple, straightforward ones.In striving for an increase of the individual engineering designer’s possibilities to actively participate in CBDA in industrial practice, an online survey has been carried out and reported in [1]. The main objective set out for this survey was to give an overview of the current situation in the global industry regarding CBDA-tasks being performed by engineering designers, what positive effects it might present to the industry and how it should be implemented for best result. Resulting from this survey, one new support, Template Based Design Analysis (TBDA), singled out as very promising for future development. TBDA is a support to be used in engineering design analyses based on the utilization of the advanced features provided by high-end Computer Aided Design (CAD)/Computer Aided Engineering (CAE) software in supporting, guiding as well as monitoring the design analysis performed by the engineering designer. It was also found that TBDA was gradually being introduced in some industrial companies.Since TBDA is still in its infancy, substantial development needs to be invested in it to make it the full-blown support needed in industrial practice. To be able to contribute to the development of TBDA, it is essential to acquire knowledge about how companies, both national and international, are planning to introduce and utilize TBDA in industrial practice.To that end a new online survey has been carried out, focusing on the introduction and benefits associated with TBDA. Out of a total of 64 respondents, 41 of the these were selected from the previous survey [1] and 23 came from companies known to the authors to utilize CBDA on a regular basis; these 23 were invited to participate in the interviews and as a first step, before carrying out the interviews, all of them were requested to answer the survey. 42 of them, from 17 countries, completed the online-survey. In addition to this survey, 5 Swedish companies, all utilizing CBDA on a regular basis, were participating in qualitative interviews. The main objective was to get an in-depth view on the use of engineering designers performing CBDA as well as an indication on the validity of the responses obtained in the online survey by comparing the results from the interviews and the companies response to the online survey – all companies interviewed answered the online survey in advance before the interviews were carried out.The introduction of TBDA in an industrial setting has resulted in many advantages, such as shorter lead times, opportunities to generate more concept candidates, and increased collaboration between the engineering designers and the design analysts, all of them contributing to more mature technical solutions. Three different automation levels of TBDA have also been identified and accounted for as well as being exemplified. In the companies in which TBDA has not been implemented, some of the reasons for not doing so are high costs, company policy, and the lack of knowledge and experience on the part of the engineering designer. This paper presents the results both from the new online survey as well as from the interviews. © 2015 by ASME
|
|
