Product System Modularization in LCA Towards a Graph Theory Based Optimization for Product Design Alternatives

Author(s):  
Chris Gabrisch ◽  
Felipe Cerdas ◽  
Christoph Herrmann
Author(s):  
K. Maddulapalli ◽  
S. Azarm ◽  
A. Boyars

We present an automated method to aid a Decision Maker (DM) in selecting the ‘most preferred’ from a set of design alternatives. The method assumes that the DM’s preferences reflect an implicit value function that is quasi-concave. The method is iterative, using three approaches in sequence to eliminate lower-value alternatives at each trial design. The method is interactive, with the DM stating preferences in the form of attribute tradeoffs at each trial design. We present an approach for finding a new trial design at each iteration. We provide an example, the design selection for a cordless electric drill, to demonstrate the method.


2019 ◽  
Vol 2019 ◽  
pp. 1-9
Author(s):  
Yan-pu Yang ◽  
Hong-liang Tian ◽  
Sheng-jie Jiao

Product evaluation practices spread throughout from initial creative stages to final products before communicating them to the market. They emphasize on assessing design alternatives against specified criteria, which can help promote design process, ensure design quality, and diminish design risk before making a decision. However, how to identify and improve the reliability of product evaluation opinions toward design alternatives has an important role in adding additional insurance and reducing uncertainty to successful product design. Aiming at this issue, this study employs a consensus model by integrating network analysis and analytic hierarchy process (AHP) method. The consensus model is constructed to measure the consistency of evaluators’ preferences and determine the rounds of evaluation. Complex network theory is integrated into the product evaluation process for network analysis of evaluators’ opinions, which can help determine evaluators’ weights in each evaluation round dynamically by changing the network topology. To obtain the weight of product evaluation indices, the AHP method is applied to avoid subjectivity given by evaluators. The process of the proposed method is presented, and the details are illustrated using a product evaluation example. The case study demonstrates that the proposed method is promising for improving the consensus level of evaluators’ opinions, reducing the influence of subjectivity, and finally improving the quality of design decision-making.


Author(s):  
Alhad A. Joshi

Over the past decade, Computer Aided Engineering (Simulation) has experienced explosive growth being a significant enabler for: 1. Validating product design; 2. Providing low-cost methods for exploring a variety of product design alternatives; 3. Optimizing parts for better service performance; 4. Reducing dependence on physical testing; 5. Reducing warranty costs; 6. Achieving faster time to market. This rapid growth in the number of simulations performed and the amount of data generated in the absence of any significant data and process management initiatives has led to considerable inefficiencies in the CAE domain. Many companies now recognize the need to manage their CAE process and data as well as their desire to leverage their existing PDM systems as the primary repositories of CAE data. Some major issues are: 1. There is a need for a PDM data model to support CAE; 2. The CAE data model can be very complex; 3. There is an immense variety of CAE applications and data types; 4. Many CAE simulations require access to physical test data for input and correlation; 5. Data management discipline is not typically part of the CAE culture today. Despite the unique challenges posed by bringing PDM into the CAE world, the transition could occur faster than it has in the CAD world. This presentation will showcase an approach for managing CAE data in traditional PDM systems. Two working examples of CAE process automation software solutions integrated with CAD and PDM will be discussed. In particular, these applications will show how CAE users can leverage established PDM infrastructure and interact with EDS’ Teamcenter/Enterprise, Teamcenter/Engineering and Dassault Systeme’s SmarTeam through seamless integrations with their CAE systems.


2011 ◽  
Vol 228-229 ◽  
pp. 422-426
Author(s):  
Qiong Wu ◽  
Ruo Xi Chen

The product design is divided into conceptual design and improved design in the field of industrial design in China featuring with free semantic design and pure styling design. With systematic process ignored, the product design could hardly guide its practice. All cultural phenomena are symbol phenomena, so is product design as an important cultural creation on which progress of human society depends. The product system design under the guidance of the principle of semantics makes some factors as symbols of product, including function, material, structure, Man-Machine, image shape, math physics, etc, to probe the specific process and method of code switch in the course of product design system.


2020 ◽  
Vol 2 (2) ◽  
pp. 12
Author(s):  
Dwi Cahyadi ◽  
Arfandi Asdar .

Politeknik Negeri Samarinda adalah salah satu perguruan tinggi di Samarinda yang terdiri dari beberapa jurusan dan program studi. Salah satunya adalah Jurusan Desain yang terdiri dari dua program studi yaitu Desain Produk dan Arsitektur. Ke dua Program Studi tersebut masing-masing memiliki gedung perkuliahan. Karena gedung program studi Arsitektur masih baru maka dibutuhkan meja khusus Ketua Jurusan Desain di gedung tersebut. Tujuan perancangan meja kerja ini adalah untuk melengkapi kebutuhan produk mebel di ruang Ketua Jurusan yang ada di gedung Arsitektur. Desain meja kerja ini menggunakan konsep portable dan sistem lepas-pasang pada bagian-bagian tertentu yang dapat mengatasi permasalahan space ruang kantor dan pintu yang sempit, serta  mengutamakan kebutuhan pengguna dari segi fungsi dan estetikanya. Dengan metode perancangan yang dilakukan antara lain; pengumpulan data, analisa data, konsep atau spesifikasi desain, alternatif desain, pengembangan alternatif terpilih, serta desain akhir, maka didapatkan hasil akhir perancangan meja kerja dengan konsep portable bergaya desain modern sesuai kebutuhan dan keinginan pengguna. Dengan dibuatnya meja kerja yang sesuai fungsi dan estetis diharapkan dapat membantu aktivitas kantor harian untuk Ketua Jurusan Desain Politeknik Negeri Samarinda, sehingga tercipta desain yang lebih baik.  Samarinda State Polytechnic is one of the colleges in Samarinda consisting of several majors and courses, one of which is the Design Department, which consists of two courses, namely the Product Design and Architecture. Study Program Product Design and Architecture have each lecture building. Because the building Architectural studies program is still new, the need for a special desk Chairman of the Department of Design at the building. Work table design objectives are to complement the needs of furniture products in the existing Chairman of the Department of Architecture building. Another objective of this work table design that uses the concept of portable and removable systems in certain parts that can overcome the problems of space for office space and the narrow door, and prioritize the needs of users in terms of function and aesthetics. With a design method of among others; data collection, data analysis, concept or design specifications, design alternatives, the selected alternative development, as well as the final design, the final results obtained design concept portable workbench with a modern design style according to the needs and desires of the users. We make appropriate workbench and aesthetic functions are expected to help the daily office activities to the Chairman of Samarinda State Polytechnic School of Design, so as to create a better design.


2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Yan-pu Yang

Consumers’ opinions toward product design alternatives are often subjective and perceptual, which reflect their perception about a product and can be described using Kansei adjectives. Therefore, Kansei evaluation is often employed to determine consumers’ preference. However, how to identify and improve the reliability of consumers’ Kansei evaluation opinions toward design alternatives has an important role in adding additional insurance and reducing uncertainty to successful product design. To solve this problem, this study employs a consensus model to measure consistence among consumers’ opinions, and an advanced particle swarm optimization (PSO) algorithm combined with Linearly Decreasing Inertia Weight (LDW) method is proposed for consensus reaching by minimizing adjustment of consumers’ opinions. Furthermore, the process of the proposed method is presented and the details are illustrated using an example of electronic scooter design evaluation. The case study reveals that the proposed method is promising for reaching a consensus through searching optimal solutions by PSO and improving the reliability of consumers’ evaluation opinions toward design alternatives according to Kansei indexes.


2013 ◽  
Vol 658 ◽  
pp. 614-619 ◽  
Author(s):  
Hong Kyu Kwon ◽  
Kwang Kyu Seo

In a competitive and globalized business environment, the need for the sustainable product development becomes stronger. To meet these trends, the total cost during the product life cycle, called life cycle cost (LCC), should be considered as an important factor in new product development. In this paper, a hybrid life cycle cost model (HLCCM) is developed as a hybrid life cycle cost system (HLCCS) to estimate the cost performance of product design alternatives. It aims at improving the cost performance of products using genetic algorithms and artificial neural networks which consist of high-level product attributes and LCC results. The framework incorporated HLCCM is proposed in cloud computing based collaborative design environment and allows users to estimate the product data and other related information on a wide variety of application. This paper presents approximate LCC estimation of product design alternatives represented by solid models in cloud computing based collaborative design environment.


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