MODAL: A SPEM Extension to Improve Co-design Process Models

2010 ◽  
pp. 248-259 ◽  
Author(s):  
Ali Koudri ◽  
Joel Champeau
Keyword(s):  
Design Process ◽  
Process Models

A Design Process Model That Unifies General Design Theory and Empirical Findings

1995 ◽  
Author(s):  
Tetsuo Tomiyama
Keyword(s):  
Design Process ◽  
Design Theory ◽  
Process Model ◽  
Theoretical Work ◽  
Process Models ◽  
General Design ◽  
Cad System ◽  
Design Process Model ◽  
Theoretical Results ◽  
Design Experiments

Abstract This paper proposes a new design process model that unifies theoretical results of General Design Theory (GDT) and empirical findings obtained from design experiments. It first reviews the design process models that were developed within theoretical work on GDT. Then, we describe experimental work on design based on protocol analysis, which resulted in a cognitive design process model from which further a computable design process model was derived. While these experimental results are supposed to support the theoretical conclusions obtained from GDT, we could also find out incompatibilities. We then propose a new design process model, called the refinement design process model, that can unify both theoretical results of GDT and experimental finding obtained from design experiments. The refinement model has better agreements with experimental findings and suggests various issues as a guiding principle to develop a future, advanced CAD system that helps a designer to focus on functional information. We propose and illustrate the concepts of such an advanced CAD system equipped with intensive design knowledge, called a computational framework for knowledge intensive engineering.

Tool and Information Centric Design Process Modeling

2012 ◽  
pp. 1613-1637
Author(s):  
William Stuart Miller ◽  
Joshua D. Summers
Keyword(s):  
Design Process ◽  
Process Modeling ◽  
Design Research ◽  
Research Effort ◽  
Case Study Research ◽  
Process Models ◽  
Design Processes ◽  
Modeling Approach ◽  
Nature Of Information ◽  
Design Process Modeling

A new design process modeling approach focused on the information flow through design tools is discussed in this chapter. This approach is applied to three long term mechanical engineering design projects spanning 24 months, 12 months, and 4 months. These projects are used to explore the development of the new modeling approach. This is a first step in a broader effort in 1) modeling of design processes, 2) establishing case study research as a formal approach to design research, and 3) developing new design process tools. The ability of engineers to understand the dynamic nature of information throughout the design processes is critical to their ability to complete these tasks. Such understanding promotes learning and further exploration of the design process allowing the improvement of process models, the establishment of new research approaches, and the development of new tools. Thus, enhancing this understanding is the goal of this research effort.

Role of Sunk Cost in Engineering Idea Generation: An Experimental Investigation

2013 ◽  
Vol 135 (12) ◽  
Author(s):  
Vimal K. Viswanathan ◽  
Julie S. Linsey
Keyword(s):  
Mental Models ◽  
Design Process ◽  
Sunk Costs ◽  
Process Models ◽  
Physical Models ◽  
Controlled Study ◽  
Time Cost ◽  
Sunk Cost ◽  
Sunk Cost Effect ◽  
Cost Effect

Researchers and design practitioners advocate building physical models of ideas at early stages of the design process. Still, the cognitive effects of physical models remain largely unknown. Some studies show that physical models possess the potential to facilitate the generation of high quality ideas. Conversely, other studies demonstrate that physical models can lead to design fixation. A prior controlled study by the authors failed to detect fixation due to early stage physical models. Based upon these conflicting results, this study hypothesizes that the fixation observed in prior studies can be explained by the Sunk Cost Effect. The Sunk Cost Effect pertains to an individual's reluctance to choose a different path of action once he/she invests a significant cost (money, time, or effort). According to this theory, as designers spend more time, money or effort in building physical models, they tend to generate ideas with lower novelty and variety. The prior observational studies use complicated design problems with higher costs compared to the controlled study, possibly explaining the difference in results. This study also hypothesizes that physical models supplement designers' erroneous mental models. The authors investigate these hypotheses through a controlled, between-subject experiment with five conditions: Sketching Only, Metal Building (low time cost), Plastic Building (high time cost), Metal Constrained Sketching, and Plastic Constrained Sketching. In each condition, subjects construct their ideas using materials specified by the name of the condition. The constrained sketching conditions assist in determining if participants tend to limit their ideas to only ones that can be built with given materials even though they are instructed to write down all ideas. The results confirm that the sunk cost of building plays a vital role in the observed fixation; thus, physical models do not inherently cause fixation. Moreover, results also show that physical models supplement designers' erroneous mental models, leading to higher quality ideas. To minimize sunk costs very early in the design process, models should be built with materials requiring minimal time, cost, and effort for the designers.

scholarly journals State of the Art in the Eco-Design Field: Toward Specifications for the Integration of Eco-Design in the Automotive Sector

2012 ◽  
Author(s):  
Julien Garcia ◽  
Dominique Millet ◽  
Pierre Tonnelier
Keyword(s):  
Design Process ◽  
Learning Process ◽  
Automotive Industry ◽  
State Of The Art ◽  
Design Method ◽  
Innovation Process ◽  
Process Models ◽  
Environmental Constraints ◽  
Design Tools ◽  
Structure Development

This paper lies within the integration of an eco-design method adapted to the Innovation structure at a car manufacturer. The environmental constraints in the automotive industry are more and more important (European emission standards for exhaust emissions, European directive on end-of life vehicles …). Eco-design is a new manner to design products related to the concept of sustainable development, which combines economy and ecology and put the environmental criterion alongside the classical criterions of design. The goal of this study is to identify the specifications of a strategy for integrating the dimension “Environment”. This strategy is applied in the innovation process thanks to eco-design tools which are the learning vectors for an organization, and therefore support a learning process. This process is structured with the interactions between the management of firm, the environment department, and the design team. Therefore we first make a synthesis of the different classifications of eco-design tools and use two categories: diagnosis and improvement. Second, as our goal is the integration in the Innovation structure and within a design process, we analyze some design process models and highlight the RID (Research, Innovation structure, Development) concept. Third, the main practices of several car makers are synthetized and a focus on three of them (Volvo, Ford, and Volkswagen) is made; we link their strategies with the concept of RID. Finally in the fourth part, we propose a model of a strategy for integrating eco-design practices based on the three examples and supported by a learning process.

scholarly journals PSS Design Process Models: Are They Sustainability-oriented?

Procedia CIRP ◽  
2017 ◽  
Vol 64 ◽  
pp. 67-72 ◽  
Author(s):  
Marina de Pádua Pieroni ◽  
Caio Augusto Nunes Marques ◽  
Renato Nunes Moraes ◽  
Henrique Rozenfeld ◽  
Aldo Roberto Ometto
Keyword(s):  
Design Process ◽  
Process Models

A methodology for developing company-specific design process models

2005 ◽  
Vol 219 (3) ◽  
pp. 265-282 ◽  
Author(s):  
M Cross ◽  
S Sivaloganathan
Keyword(s):  
Design Process ◽  
Process Model ◽  
Design Methods ◽  
Process Models ◽  
Basic Knowledge ◽  
Specific Design ◽  
Project Risk ◽  
Specialist Knowledge ◽  
Concurrent Development ◽  
Design Process Model

A number of design models have been proposed by design researchers, but they have not been adopted by industry because they are too generic. To be successful, companies have to manage effectively both project risk and concurrent development. The stage gate model is a suitable mechanism to achieve the required control within a commercial environment and there is evidence of its adoption by industry. The number of stages used depends on the degree of risk and the control needed in the project. Design methods are techniques that can assist designers to develop new products and knowledge can be classified as basic or specialist. This paper summarizes 100 key design methods from basic knowledge and suggests when they should be used. There are also company-specific design methods, which fall in the specialist knowledge category. An effective commercial design model should incorporate, firstly, a stage gate process that has stages defined to suit the project risk and to provide the control needed, secondly, the required level of concurrency, thirdly, appropriate basic design methods in the different stages, and, fourthly, appropriate specialist design methods in the different stages. This paper proposes a six-stepped methodology for developing such a company-specific design process model.

scholarly journals Concept of Product Complexity Modeling in the Development of a Machine Shaft

2017 ◽  
Vol 8 (2) ◽  
pp. 91-98
Author(s):  
Jerzy Pokojski ◽  
Łukasz Woźnicki
Keyword(s):  
Design Process ◽  
Process Modeling ◽  
Process Models ◽  
Detailed Structure ◽  
Product Complexity ◽  
Speed Reducer ◽  
Design Process Modeling ◽  
Product And Process ◽  
Paper Product

AbstractIn the paper product and design process modeling on the basis of speed reducer is presented. The paper proposes to build the product and process models and parallel to that carry out the project activities as these models reflect the detailed structure of the projects.The most important feature of the proposed approach is its possibility to model only important parts of the models and to keep track of the development of their chronological paths. The approach may be treated as a partial CPM/MOKA model or as network-integrated CPM/MOKA models.

Modeling Collaborative Engineering Design Process Using Petri-Net

2000 ◽  
Author(s):  
Li Zhao ◽  
Yan Jin
Keyword(s):  
Engineering Design ◽  
Design Process ◽  
Petri Net ◽  
Collaborative Design ◽  
Process Model ◽  
New Technologies ◽  
Process Models ◽  
Collaborative Engineering ◽  
Routine Design ◽  
High Level

Abstract Collaborative engineering involves multiple engineers and managers working together to develop engineering products. As the engineering problems become more and more complicated, new technologies are required to achieve better effectiveness and efficiency. While process models management and technologies have been developed to support engineering design, most of them apply only to routine design tasks and do not explicitly deal with the change of processes during execution. Our research proposes a process-driven framework to support collaborative engineering. The framework is composed of a process model that captures both high level and low level activity dependencies, an agent network that monitors process execution and facilitates coordination among engineers, and a Petri-net based modeling tool to represent and analyze process features and predict the performance of engineering processes. In this paper, we first describe a simple collaborative design problem and our proposed ActivePROCESS collaborative engineering framework. After that we present our Petri-net based analytical model of collaborative design process and discuss the model along with a case example.

Sign in / Sign up

Export Citation Format

Share Document