scholarly journals Integration of Computer Aided Design Analysis Into the Engineering Design Process for Use by Engineering Designers

Author(s):  
Håkan Petersson ◽  
Damien Motte ◽  
Martin Eriksson ◽  
Robert Bjärnemo

When developing products, engineering designers often face the problem that their candidate for a technical solution, ranging from a concept to a detailed design, needs to be analyzed by a design analyst before it is approved or rejected and the engineering designer can continue his/her activities within the product development process. If engineering designers have to send every solution candidate to a design analyst, a lot of time and money is lost. To avoid this, some Swedish companies have started to allow their engineering designers to use the analysis capabilities imbedded in modern CAD/CAE software. In the literature on product development and on computer based design analysis (CBDA) both processes are fairly well described. However, this cannot be said about the interaction between the two processes. This is a growing issue as it represents core knowledge for developing efficient and effective integration concepts, which in turn can be developed into likewise efficient and effective approaches on how to assist the engineering designer to perform parts of the CBDA process on his/her own. Note that when we refer to CBDA here, this is confined to the use of FEM in the development of products, primarily based on working principles originating from the area of Mechanical Engineering. Since we have been working on a process model for the integration between engineering design and design analysis, this has inspired us to utilize findings from these efforts to propose a conceptual model for a design analysis process driven by the engineering designer to be integrated into the product development process. The proposed design analysis process model is based on the use of predefined analysis methods or templates. Templates are also utilized for QA (Quality Assurance) and monitoring of the analysis activities. Responsible for the development of the analysis methods and the templates are expert design analysts, who develop these tools within a technology development process. Before allowing the engineering designers access to them, these tools need to be approved by relevant bodies within the industrial enterprise and/or by external sources such as those responsible for certification and risk management. In this paper we present the development of the proposed integrated design analysis process model and an industrial case study, which incorporates a non-linear design analysis activity, utilizing the FEM-program Abaqus within the CAD-software Catia V5 and its imbedded optimization module.

2018 ◽  
Vol 27 (1) ◽  
pp. 57-67 ◽  
Author(s):  
Fupeng Yin ◽  
Qi Gao ◽  
Xue Ji

The appropriate iteration process model is the basis for managing and optimizing the product development process. In this article, we attempt to introduce the concept of process effectiveness and process value. The relationship between rework probability and process effectiveness is discussed. The evolution function of process effectiveness is proposed to drive the overlapped iteration process of multi-coupled activities. The evolution process with input information update is studied, and a simulation model is presented to obtain the accurate iteration process of development. It is useful to analyze the risks during development, and has good flexibility and versatility. The calculation method of process value for overlapped iteration process is given, and an optimization model for product development process is provided. The model is used to improve the development process of the stamping die of a car roof. With the model, we can get a suitable overlapping rate of multi-coupled activities to improve development performance.


2020 ◽  
Vol 24 (3) ◽  
pp. 517-532
Author(s):  
Rachel Parker-Strak ◽  
Liz Barnes ◽  
Rachel Studd ◽  
Stephen Doyle

PurposeThis research critically investigates product development in the context of fast fashion online retailers who are developing “own label” fashion clothing. With a focus upon inputs, outputs, planning and management in order to comprehensively map the interplay of people, processes and the procedures of the product development process adopted.Design/methodology/approachQualitative research method was employed. Face-to-face semi structured in depth interviews were conducted with key informants from market leading fast fashion online retailers in the UK.FindingsThe major findings of this research demonstrate the disruptions in the product development process in contemporary and challenging fashion retailing and a new “circular process” model more appropriate and specific to online fast fashion businesses is presented.Research limitations/implicationsThe research has implications for the emerging body of theory relating to fashion product development. The research is limited to UK online fashion retailers, although their operations are global.Practical implicationsThe findings from this study may be useful for apparel product development for retailers considering an online and fast fashion business model.Originality/valueThe emergent process model in this study may be used as a baseline for further studies to compare product development processes.


2020 ◽  
Vol 28 (3) ◽  
pp. 210-221
Author(s):  
Gyesik Oh ◽  
Yoo Suk Hong

Many companies adopt concurrent engineering in their product-development projects in order to reduce time to market. Concurrent engineering requires careful management, since the uncertainty of transferred information leads to rework and renders a development process complex. Most of the existing studies on concurrent engineering have analyzed overlapping between two activities. The present study expanded the research scope by modeling the developmental process of the concurrent execution of multiple activities as the result of management decisions, the overlapping ratio, and the information transfer frequency. When multiple activities are overlapped, it is more difficult to model a development process, since the uncertainty of cascaded information has impacts on many activities. The quantitative model developed in the present study provides insights into the uncertainty of information and the product-development process. Based on the generalized process model for multiple-activity overlapping, the optimal decision to minimize project duration was considered. As a solution to the dilemma of the high computational burden of considering all feasible decision sets, this paper proposes a myopic heuristic. The project management heuristic proposed in this paper is intended to assist managers in the decision-making process, as well as reducing the intermediate deadlines in project main plan.


2018 ◽  
Vol 12 (1) ◽  
pp. 77-87
Author(s):  
Ismaniar Ismaniar

The motivated this research is by the still low development of attention concentration ability in early childhood.The purpose of this study is to develop a model of selective attention playing for children in group B kindergarten Al Ittihaad Bekasi. The study was a Research and Development (R&D), developed by Borg & Gal. Model development through three stages is (1) needs analysis process, (2) product development process, and (3) tesing process.After the experimental process in the research as well as input from teachers using this model,has been very encouraging and axpert advices add the finishing touch.The model effectiveness tes showed a significant increase in the process of assisting children with low selective attention ability. Estafet Bait Lagu Model is consist of guide book, medias, and assesment. Keyword: The ability of selective attention, development, play model, estafet bait lagu   Latar belakang penelitian ini adalah  masih rendahnya perkembangan kemampuan pemusatan perhatian pada anak usia dini. Penelitian bertujuan untuk mengembangkan model permainan pemusatan perhatian pada anak-anak di kelompok B TK Al Ittihaad Bekasi. Penelitian ini merupakan Penelitian dan Pengembangan (R&D), menggunakan desain yang dikembangkan oleh Borg & Gall. Pengembangan model melalui tiga tahapan yaitu (1)proses analisis kebutuhan,(2) proses pengembangan produk dan (3) proses pengujian. Setelah dilakukan beberapa kali uji coba, masukan dari guru pengguna model ini sudah sangat menggembirakan dan sentuhan terakhir dengan menambahkan pendapat dan masukan pakar. Pengujian efektivitas model memperlihatkan terjadi peningkatan yang cukup signifikan dalam hal proses membantu anak-anak yang memiliki kemampuan pemusatan perhatian yang rendah. Model Estafet Bait Lagu terdiri dari buku panduan, media, dan penilaian. Kata kunci; kemampuan pemusatan perhatian, pengembangan, model permainan, estafet bait lagu


2017 ◽  
Vol 1 (2) ◽  
pp. 307
Author(s):  
Ceyda ÜNAL ◽  
Vahap TECİM

<p class="AbstractText">The use of technology in innovative product design process is becoming very accelerative all over the world. Following that, small and medium-sized enterprises (SMEs) must practice innovative operations due to the fact that they have financial and technical incapabilities. In spite of all the essentialities, researches showed that research and development (R&amp;D) expenditures of SMEs are under 5% in 2015. Focusing on SMEs, it was observed that R&amp;D infrastructure of them is extremely weak. Research conducted in 2015 in Turkey, according to R&amp;D expenditures of firms showed that first ten enterprises in the list were multinational, so not SMEs.</p><p class="AbstractText"> </p><p class="AbstractText">Open innovation is very fundamental for SMEs to keep their competitive advantages. Nowadays, important multinational firms have left their closed structure about R&amp;D and innovation practices. As a result of this; firms have started to behave accordingly to open innovation systems. In open innovation, all the external partners should participate in the business processes. However, there are not enough researches about it.</p><p class="AbstractText"> </p><p class="AbstractText">The purpose of this paper is to design product development processes of SMEs using mobile technologies. The system which was allowed the effects of external partners was designed for it. According to data collected through in-depth interviews with experts and literature review, the points are given by customers were taken into account and analyzed. The analysis process was applied according to selection criteria specified.</p><p class="AbstractText"> </p><p class="AbstractText">Recently, open innovation has been provided by the "contestification" method. Contestification is the method that enables users to participate in an ideation contest and all the users have right to vote for ideas. As a result of this, innovative ideas come to realize. Despite of the importance as mentioned, there are few researches about the application of contestification method via mobile technologies. For this reason, contestification method was used to accelerate the product development process in this study.</p><p class="AbstractText"> </p><p class="AbstractText">This research sheds light on the contribution of the users for the product development process. In the measurement process, it was observed that SMEs needed this kind of research for the efficient decision making with less financial resources and method developed made the analysis process easier.</p>


Author(s):  
Benjamin Gerschütz ◽  
Marius Fechter ◽  
Benjamin Schleich ◽  
Sandro Wartzack

AbstractThe amount of new virtual reality input and output devices being developed is enormous. Those peripherals offer novel opportunities and possibilities in the industrial context, especially in the product development process. Nevertheless, virtual reality has to face several problems, counteracting reliable use of the technology, especially in ergonomic and aesthetic assessments. In particular, the discrepancies in perception between the real world and virtual reality are of great importance.Therefore, we discuss these most important issues of current virtual reality technology and highlight approaches to solve them. First, we illustrate the use cases of VR in the product development process. In addition, we show which hardware is currently available for professional use and which issues exist with regard to visual perception and interaction. Derived from the depiction of a perfect virtual reality, we define the requirements to address visual perception and interaction. Subsequently we discuss approaches to solve the issues regarding visual perception and evaluate their suitability to enhance the use of virtual reality technology in engineering design.


2013 ◽  
Vol 299 ◽  
pp. 176-179
Author(s):  
Xue Peng Liu ◽  
Dong Mei Zhao

The process -oriented product process model is established. The map of process model and product development is built. On the basis of product development process model, a model DMPA (Product development process model based on the process or action) is proposed. The algorithms of process deletion and recursion are put forward to implement the application system.


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