Constraint-Aided Conceptual Design

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ISBN: 9781860583353 | 1860583350
Cover: Hardcover
Copyright: 2/15/2002

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A title in the "Engineering Research Series" Constraint-Aided Conceptual Design is concerned with that phase of product development during which the designer takes a specification for the product and generates many broad solutions to achieve the end result. This valuable book offers a computational reasoning solution based on the notion of constraint filtering as the basis of an interactive design support tool to assist a human designer working in the conceptual phase of design. Using this interactive design support tool, the designer can be assisted in developing models of proposed schemes which satisfy the various constraints that are imposed on the design.COMPLETE CONTENTS: Background Theory Implementation strategy Illustration and validation Conclusions An overview of Galileo Generic design concepts An illustrative example An industrial case study.

Series Editor's Foreword	p. xiii
Author's Preface	p. xv
Acknowledgements	p. xvii
Introduction	p. 1
Engineering design and product development	p. 1
The topic of this research	p. 3
The goals of this research	p. 4
A statement of the thesis	p. 4
Contributions of this research	p. 4
Structure of this book	p. 5
Background	p. 7
A review of conceptual design research	p. 7
Modelling for conceptual design	p. 10
Reasoning techniques for conceptual design	p. 14
Trends in conceptual design research	p. 16
A review of constraint processing for design	p. 19
Constraint processing for the phases of design	p. 19
Constraint processing for configuration	p. 21
Constraint processing for integrated design	p. 22
Constraint processing and design domains	p. 24
Pareto optimality	p. 24
Summary	p. 27
Theory	p. 41
A perspective on conceptual design	p. 41
The design specification	p. 43
The functional requirement	p. 45
Physical requirements	p. 45
Conceptual design knowledge	p. 46
The function-means map	p. 47
Embodiment of function	p. 48
Design principles: supporting abstraction	p. 50
Design entities: design building blocks	p. 54
Scheme configuration using interfaces	p. 55
Scheme generation	p. 56
An example of scheme generation	p. 57
Evaluation and comparison of schemes	p. 66
Learning during conceptual design	p. 67
Summary	p. 68
Implementation Strategy	p. 71
Modelling for conceptual design	p. 71
The implementation language used: Galileo	p. 72
An enhancement to the semantics of quantification	p. 72
Applying the '!' operator to the exists quantifier	p. 73
Other extensions	p. 76
Generic versus application-specific concepts	p. 77
Implementing generic concepts	p. 78
A generic scheme structure	p. 78
A generic model of function embodiment	p. 79
A generic model of means	p. 84
A generic model of design principles	p. 85
A generic model of design entities	p. 85
Context relationships and entity interfaces	p. 87
Generic concepts for comparing schemes	p. 88
Implementing application-specific concepts	p. 90
Defining known means	p. 90
Defining company-specific design principles	p. 93
Defining company-specific design entities	p. 94
Defining company-specific context relationships	p. 96
Modelling design specifications	p. 99
Modelling functional requirements	p. 100
Modelling categorical physical requirements	p. 101
Modelling design preferences	p. 104
Modelling Design for X requirements	p. 106
Scheme generation	p. 107
Summary	p. 112
Illustration and Validation	p. 113
An illustrative example	p. 113
An example design specification	p. 114
An example design knowledge-base	p. 115
Interactive scheme development	p. 115
Review of the example design problem	p. 132
An industrial case-study	p. 133
A profile of the company	p. 134
Discrete components from Bourns	p. 134
The case-study project	p. 135
The design specification	p. 136
Modelling design knowledge for Bourns	p. 139
Generating alternative schemes	p. 145
Review of the industrial case-study	p. 152
Conclusions	p. 153
The goals of the research revisited	p. 153
Constraint-based support for conceptual design	p. 153
Motivation for new features in Galileo	p. 154
Comparison with related research	p. 157
Design theory approaches	p. 157
Constraint-based approaches	p. 158
Pareto optimality approaches	p. 159
Recommendations for further study	p. 159
Further prototyping and tools development	p. 159
Constraint filtering research	p. 160
Knowledge-bases for different engineering domains	p. 160
An industrial implementation	p. 160
CAD standard integration	p. 161
Summary	p. 161
An Overview of Galileo	p. 163
The Galileo language	p. 163
Galileo implementations and tools	p. 164
Constraint filtering and Galileo	p. 164
An overview of the features of Galileo	p. 166
Modelling with frames	p. 166
Modelling with constraints	p. 166
Free-logic and non-parametric design	p. 167
Optimization	p. 167
Prioritization	p. 167
Multiple perspectives and interfaces	p. 167
Specifications and decisions	p. 167
Explanation	p. 168
'What if' design reasoning	p. 168
Generic Design Concepts	p. 171
The contents of generic_concepts.gal	p. 171
The contents of comparison.gal	p. 176
An Illustrative Example	p. 177
The contents of raleigh_knowledge.gal	p. 177
The contents of vehicle_spec.gal	p. 184
An Industrial Case-Study	p. 187
The contents of bourn_knowledge.gal	p. 187
The contents of contact_spec.gal	p. 193
Index	p. 195
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Constraint-Aided Conceptual Design

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