lecture 02 design problem solving...

Design and Problem SolvingME – 2110

Creative Decisions and Design

Thomas R. Kurfess, Ph.D., P.E.HUSCO/Ramirez Distinguished Chair in Fluid Power and Motion Control

Woodruff School of Mechanical EngineeringGeorgia Institute of Technology

Atlanta, Georgia USA

/ 14

Design & Problem Solving

Analysis Decision Making

– Picking the Best Among Alternatives Need to Develop Alternatives Information Processing

– Art to Part– Symbol Analyst

2

/ 14

Information

Received– Cloud / web– Media (Podcast / Blog / TV / Journals)– Colleagues (Face-2-Face / Social Media)

Processed – Analysis– Synthesis

Transmitted– Models (Drawings)– Documents– Presentations

3

/ 14

Phases of Design

Customer– Understand the Design Process

Specification Development– Specification of Information

Conceptual Design– Specification of a Principle– Functional Decomposition– Generate Concepts– Concept Evaluation– Concept Selection– Preliminary Design/Embodiment

Detail Design Specification of Production

– Process Planning

Manufacture

4

/ 14

3 Types of Design

1. Original– New Products– New Ideas (patents)

2. Adaptive– Known system to a changed task– ABS, High Performance Aircraft → Car

3. Variant – Vary size– Vary arrangement– Same task (braking truck / braking car)

Redesign – Adaptive/Variant (Bulk of Design Work)

5

/ 14

3 Major Design Issues

Cost Quality Time

6

/ 14

Design Techniques for all Levels of Design Systems

Plants (Factories) Equipment (Machining Centers) Individual Machines (Lathe …) Assembly (Spindle Motor) Component (Bearing in Motor) Feature (Ball Track in Bearing)

– Something that is fabricated

7

/ 14

Energy Material & Information (EMI)

A design converts Energy Material & Information Main function

– Basis for customer requirement– Essential problem– Crux of problem

Need to understand the problem statement Example

– Design Bolted Joint vs. fasten 2 pieces of metal Function

– What you want to do - changes (manipulates) EMI Behavior

– What it does8

/ 14

Honda Personal Transporter

9

/ 14

SoloWheel Personal Transporter

10

/ 14

Segway Personal Transporter – A Cool Device?

11

/ 14

Segway Personal Transporter – Unstable Response

12

/ 14

Segway Personal Transporter - Instability

13

/ 14

Broken Neck

14