System of System Based Sociotechnical Complexity Challenges in Product and Process Design

2011 ◽  
Author(s):  
Zulfiqar Ali-Qureshi
Keyword(s):  
Product Design ◽  
Process Design ◽  
Product Life Cycle ◽  
Process Development ◽  
Physical Structure ◽  
System Level ◽  
Design System ◽  
Assembly Process ◽  
Product And Process ◽  
Physical Elements

Unique characteristic of system of system based product life cycle challenges evolves different level of systems. This means the product design system and process level system consideration are very important besides the system level issues for product and process development which are part of systems of system. These core issues include the physical elements, assembly process and its related cognitive elements of component to that particular assembly and its process at Sub system level which are fundamental of System of system in holistic perspective of new product and process design. Any system level change or variety affects the next adjacent system in the same product as a member of same family of a system of system. In this paper the aspect of Hybrid electric car battery has been explored to reduce the system of system level sociotecnical complexity in product design. In this context, the affect of changeability in the assembly system level has been explored and DFA analysis and the complexity Index of the product at physical structure, assembly process and cognitive system level been discussed to draw analogy for making an understanding of similar nature of the system in platform based product and process family development.

Integrating Product Design With Manufacturing Process Design Using the Robust Concept Exploration Method

1996 ◽  
Author(s):  
Jesse D. Peplinski ◽  
Janet K. Allen ◽  
Farrokh Mistree
Keyword(s):  
Product Design ◽  
Process Design ◽  
Manufacturing Process ◽  
Response Surfaces ◽  
Production Costs ◽  
Early Stages ◽  
Trade Offs ◽  
Development Costs ◽  
Concept Exploration ◽  
Product And Process

Abstract How can the manufacturability of different product design alternatives be evaluated efficiently during the early stages of concept exploration? The benefits of such integrated product and manufacturing process design are widely recognized and include faster time to market, reduced development costs and production costs, and increased product quality. To reap these benefits fully, however, one must examine product/process trade-offs and cost/schedule/performance trade-offs in the early stages of design. Evaluating production cost and lead time requires detailed simulation or other analysis packages which 1) would be computationally expensive to run for every alternative, and 2) require detailed information that may or may not be available in these early design stages. Our approach is to generate response surfaces that serve as approximations to the analyses packages and use these approximations to identify robust regions of the design space for further exploration. In this paper we present a method for robust product and process exploration and illustrate this method using a simplified example of a machining center processing a single component. We close by discussing the implications of this work for manufacturing outsourcing, designing robust supplier chains, and ultimately designing the manufacturing enterprise itself.

Concurrent Robust Product and Process Design

1999 ◽  
Author(s):  
Lars Lindkvist ◽  
Rikard Söderberg
Keyword(s):  
Process Design ◽  
Evaluation Criteria ◽  
Software Tool ◽  
The Body ◽  
Assembly Process ◽  
Critical Dimensions ◽  
Cad System ◽  
Start Up ◽  
Assembly Evaluation ◽  
Product And Process

Abstract This paper presents a method for assembly evaluation. The method uses two evaluation criteria, robustness and variation analysis, and is supported by a software tool developed by the authors. The robustness evaluation aims at detecting design and assembly solutions that are sensitive to variation and may cause problems during production. Using this method in early product and process design phases helps to find more robust concepts, resulting in shorter production start-up time and better precision. The method’s use is exemplified in a concept study of the assembly process of the door to the body of a (fictitious) jeep. The study shows that the proposed method can be used to obtain an objective comparison between different concepts. This comparison includes both general robustness and the expected variation in the critical dimensions. The results can be used, together with economical and practical aspects, to determine which concept is best suited for the assembly process. The software used is implemented in the MS Windows environment and has an JGES interface that enables the user to import CAD geometry from an arbitrary CAD system. It can perform different types of robustness evaluations as well as traditional variation analyses.

A Cooperative-Collaborative Design System for Multi-Disciplinary Mechanical Design

2005 ◽  
Author(s):  
Zhiqiang Chen ◽  
Zahed Siddique
Keyword(s):  
Product Design ◽  
Design Process ◽  
Collaborative Design ◽  
Process Model ◽  
Mechanical Design ◽  
System Level ◽  
Design System ◽  
Design Collaboration ◽  
Design Activities ◽  
Design Process Model

The emergence of computer and network technology has provided opportunities for researchers to construct and build systems to support dynamic, real-time, and collaborative engineering design in a concurrent manner. This paper provides an understanding of the product design in a distributed environment where designers are in different geographic locations and are required to be involved in the design process to ensure successful product design. A design process model that captures the major interactions among stakeholders is presented, based on the observation of cooperation and collaboration. The stakeholders’ interactions are divided into activity and system level to distinguish the interactions in group design activities and design perspective evolution. An initial computer implementation of the design model is presented. The design system consists of a set of tools associated with design and a management system to facilitate distributed designers to support various design activities, especially conceptual design. Our research emphasis of design collaboration in this paper is: (i) Model a Cooperative-collaborative design process; (ii) Support synchronized design activities; and (iii) Structure the complex relations of various design perspectives from engineering disciplines.

Designing the Product Development Process

2007 ◽  
Author(s):  
Amanda Bligh ◽  
Manbir Sodhi
Keyword(s):  
Product Development ◽  
Process Design ◽  
Development Process ◽  
Process Development ◽  
Product Development Process ◽  
Time To Market ◽  
Quality Product ◽  
Development Processes ◽  
Product And Process ◽  
The Impact

Even though the literature on product and process development is extensive, not much attention has been devoted to categorizing the product development process itself. Existing work on product development processes such as Total Design, Integrated Product and Process Design among others advocate common approaches that should be followed throughout the organization, without any consideration of product characteristics. In this paper we review several existing development methodologies. Extensions of these are categorized by their applicability to different classes of products. We propose that development processes should be matched to product attributes and organization goals. Towards this end, we associate development processes along with their components such as House of Quality, Robust Design, TRIZ etc. with goals such as time to market, customer needs satisfaction, intellectual property generation, protection and exploitation, quality, product cost and others. We examine the impact of this association on the development process itself and propose guidelines for constructing specific processes associated with one or more goals. Tools and benchmarks for various applications are discussed, along with some case studies on the design of different development processes.

An Expert System for Concurrent Product and Process Design of Mechanical Parts

1994 ◽  
Vol 208 (3) ◽  
pp. 167-172 ◽  
Author(s):  
H S Abdalla ◽  
J Knight
Keyword(s):  
Expert System ◽  
Process Design ◽  
Computer Aided Design ◽  
Feature Recognition ◽  
Design For Manufacturability ◽  
Design System ◽  
Mechanical Parts ◽  
Extensive Information ◽  
Product And Process ◽  
Aided Design

A new approach for concurrent product and process design of mechanical parts is presented in this paper. This approach enables designers to ensure that the product will be manufactured with the existing manufacturing facility at high quality and lowest cost. It is composed of an integrated expert and CAD (computer aided design) system that meets the requirements for accomplishing the concept of design for manufacturability or concurrent engineering. The system is based mainly on three tasks: firstly, developing a technique for automated feature recognition from the database of a solid modeller; secondly, interfacing the expert system tool-kit with the solid modelling system; finally, building an expert system that contains extensive information about both manufacturing facilities and product features. The expert system provides feedback about manufacturing concerns such as process limits or design inconsistencies. This work is part of the present extended research plan for developing a generic system suitable for various manufacturing practices based on design for manufacturability strategy.

Treatment of the Responsibility and Controllability in Team-Based Concurrent Product and Process Design

2000 ◽  
Author(s):  
Li Chen ◽  
Simon Li
Keyword(s):  
Product Design ◽  
Process Design ◽  
Design Flow ◽  
Design Approach ◽  
Team Approach ◽  
Sequential Mode ◽  
Product And Process ◽  
Team Design ◽  
Method Of Design

Abstract In team-based concurrent product and process design (CPPD), one type of team activities proceeds alternately in a one-by-one fashion. This sequential mode of design flow can be treated as a generalized leader/follower team paradigm, in which the leader acts as a principal team and the follower as a subordinate team. In the dual-team approach, the leader and the follower correspond to two aspects of CPPD — product design and process design — whereby the alternate nature of design tasks can be characterized through the interactions of the leader and the follower. To reveal the variety of such team activities, the notion of responsibility and controllability in various design protocols is introduced to describe the respective roles of the leader and the follower in team design. The method of Design for Satisfaction (DfS) is used as a framework to characterize team’s preference toward a feasible design in view of the team’s goal. Accordingly, the satisfaction-driven dual-team based CPPD models are developed to account for different team scenarios. A design example is used to support the illustration of the team design approach suggested.

A framework for an automotive body assembly process design system

2006 ◽  
Vol 38 (5) ◽  
pp. 531-539 ◽  
Author(s):  
Guanlong Chen ◽  
Jiangqi Zhou ◽  
Wayne Cai ◽  
Xinmin Lai ◽  
Zhongqin Lin ◽  
...  
Keyword(s):  
Process Design ◽  
Design System ◽  
Assembly Process ◽  
Automotive Body

scholarly journals Design Evaluation of Multi-station Assembly Processes by Using State Space Approach

2002 ◽  
Vol 124 (3) ◽  
pp. 408-418 ◽  
Author(s):  
Yu Ding ◽  
Dariusz Ceglarek ◽  
Jianjun Shi
Keyword(s):  
State Space ◽  
Process Design ◽  
State Space Model ◽  
System Level ◽  
Space Representation ◽  
System Response ◽  
Design Evaluation ◽  
Assembly Process ◽  
Sensitivity Indices ◽  
Variation Propagation

This paper considers the problem of evaluating and benchmarking process design configuration in a multi-station assembly process. We focus on the unique challenges brought by the multi-station system, namely, (1) a system level model to characterize the variation propagation in the entire process, and (2) the necessity to describe the system response to variation inputs at both global (system level) and local (station level and single fixture level) scales. State space representation is employed to recursively describe the propagation of variation in such a multi-station process, incorporating process design information such as fixture locating layout at individual stations and station-to-station locating layout change. Following the sensitivity analysis in control theory, a group of hierarchical sensitivity indices is defined and expressed in terms of the system matrices in the state space model, which are determined by the given process design configuration. Implication of these indices with respect to variation control is discussed and a three-step procedure of applying the sensitivity indices for selecting a better design and prioritizing the critical station/fixture is presented. We illustrate the proposed method using the group of sensitivity indices in design evaluation of the assembly process of an SUV (Sport Utility Vehicle) side panel.

An Adaptive Machining Fixture Design System for Automatically Dealing With Design Changes

2007 ◽  
Vol 7 (3) ◽  
pp. 259-268 ◽  
Author(s):  
Mervyn Fathianathan ◽  
A. Senthil Kumar ◽  
A. Y. C. Nee
Keyword(s):  
Process Design ◽  
Search Algorithm ◽  
Dynamic Environment ◽  
Design System ◽  
Fixture Design ◽  
Evolutionary Search ◽  
Design Changes ◽  
Adaptive Machining ◽  
Product And Process

Integrated product and process design involves a dynamic environment where various design changes are made when the requirements of the different domains are not sufficiently met. Dealing with changes is a tedious and cumbersome process. To deal with design changes automatically, this paper presents the development of an adaptive fixture design system based on an evolutionary search algorithm. The system senses a change made to the workpiece model and automatically deals with the change. Conducted experiments reveal that the evolutionary search algorithm is efficient and effective in dealing with design changes adaptively.

Sign in / Sign up

Export Citation Format

Share Document