ES305 - Virtual Tools in Engineering Design:

Design Manual

James Carroll,Associate Professor

Electrical and Computer Engineering

About Eng. Design Teams

• Consist of Members with a Mix of Backgrounds and Training:– Scientists: Have strong training in math and science

which emphasizes the theoretical. Scientists ask "Why?" questions.

About Eng. Design Teams– Engineers: Attempt to do something useful with scientific

theories and principles, called design, i.e., a creative process that produces in a new device, system, structure, or process that satisfies a specific need.

– Technologists: Do much of the actual implementation of the engineering designs, like CAD drawings, testing, data taking and reduction, and directing craftspeople during fabrication.

– Craftspeople: Are the practical or implementation end of the spectrum. They primarily manufacture or assemble the products designed by the rest of the team, e.g., welders, machinists, etc.

The Design Process

The Design Process

Detailed Design Process w/Iteration

Detailed Design Process w/Iteration

Detailed Design Process w/Iteration

Detailed Design Process w/Iteration

The Problem Statement and Functional Requirements

Brainstorming

Brainstorming Rules

Sketchstorming

Be Creative and Think Laterally!

Be Creative and Think Laterally!

Identifying and Evaluating Design Alternatives: An Example

Identifying and Evaluating Design Alternatives: An Example

Identifying Design Alternatives:Weighted Objective Trees

Developing Models and Prototypes • All modeling can be broken down into one of two

categories:– Descriptive Models: Depict ideas, products, and

processes in a way that is recognizable. The goal is to show what a design would look like if it were created.

• Examples: Engineering drawings, 3D computer models, or scale models

– Predictive Models: Used to test and understand how designs ideas, products, and processes will perform. May bear little or no resemblance to the overall design.

• Examples: Mathematical equations or graphs showing a relationship between design requirements

Developing Models and Prototypes • Scale models are one of the most basic and generally

useful because they are very much hands-on and provide a good feel for a design and its features

• Computer simulation and animation are two other common model types

Common Engineering Analyses

Common Engineering Analyses

Thoughts on Project Management

Do Not Leave Team

Development to Chance!

Keeping on Schedule

Four Stages of Team Development

Four Stages of Team Development

Four Stages of Team Development

Four Stages of Team Development

Four Stages of Team Development

References • S. Pugh, Total Design , Addison-Wesley, 1991.

ISBN 0-201-41639-5• M.N. Horenstein, Engineering Design, Prentice Hall,

1999. ISBN 0-13-085089-6• L.J. Kamm, Real-World Engineering, IEEE Press,

1991. ISBN 0-87942-279-3• J.P. Lewis, Fundamentals of Project Management,

American Management Association, 1995. ISBN 0-8144-7835-2

• JC. Martin, The Successful Engineer, McGraw-Hill, 1993. ISBN 0-07-040725-8