ME2110:

CREATIVE DECISIONS AND DESIGN

Dr. J.Rhett MayorRoom 435 MARC

jrmayor@me.gatech.edu

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What You Will be Doing in 9 Weeks

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Course Information

• Lectures:– T,Th 8:05am – 8:55am Van Leer Auditorium

• Studio– Weekly MRDC 2203

• Website:– http://singhose.marc.gatech.edu/courses/me2110/index.html

• Text Book:– W. Singhose, J. Donnell, Introductory Mechanical

Design Tools– http://www.lulu.com/content/3365814

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Instructors:• Dr. J.Rhett Mayor• Dr. Jeff Donnell• Dr. Timothy F. Patterson• Dr. Jeffrey L. Streator• Dr. F. Levent Degertekin• Dr. Andres J. Garcia• Dr. Wayne J. Book

GTAs:• Alex Williams• Zach Levin• Hao Wu• Xuan Huang• Daichi Fujioka• Ryan Demars• Sung Chul Joo• Mark Varady• Matthew Futterman

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Key Activities

• Design Machines

• Build Machines

• Communicate Your Work

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Course Goals

• Mechanical Design• Communication • Machining • Mechatronics• Teamwork• Satisfaction & Fun

Counter Weight

Tower

Aluminum Extending Arms

Swinging Sweep Arms

Controller Box

DC Motor

String

Wire Frame with Sticky Tape

Solenoid Trigger

Mouse Traps

Spool

Counter Weight

Tower

Aluminum Extending Arms

Swinging Sweep Arms

Controller Box

DC Motor

String

Wire Frame with Sticky Tape

Solenoid Trigger

Mouse Traps

Spool

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Studio instructor determines final grades

Course Requirements (100%)

• Pasta Structure Studio(5%)

• Mechanical Dissection(5%)

• Design Mini-Project (20%)

• Homework (15%)

• Oral Presentation (P/F)

• Electronics/Machining (P/F)

• Major project (55%)– Report and Presentation #1

(5%)– Report and Presentation #2

(5%)– INDIVIDUAL Competition (5%)– Competition Score (10%)– Design Review (5%)– Final Oral Presentation (10%)– Final Report (20%)

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Pasta Tower

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Mini-Projects

• Squirrel Trap • Mosquito Catcher • Safety Scooter • Car Security• Wiper Blades• Window Blinds

• Condensed version of the design process

• Final design on “paper” only

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Machining

Lathe

Mill

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Mechatronics

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ME2110 Design Competition

• Design, build, test and compete with your machine– 5wks, $200

• Design Objectives released 09/16/2008 @ 8:05am

• Competition commences 11/14/2008 @ 5:00pm

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Pointers for Success

• Do’s– act professionally – follow instructions– be in class & studio on time– use the tools that are

presented– read the book– give professional

presentations– follow procedures (safety)– clean-up in studio– report damaged equipment

• Don’t’s– miss class– close your minds to the

alternatives – sleep in class– bring food into studio– leave a mess in studio.

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Attendance

• You must attend all studios– Missing a studio results in a 0 for that studio grade– Make arrangements to attend another studio section– No way to make up a missed studio the next week

• You must attend all lectures– Missing a lecture results in you being a loser for the

day

1. Most of your work is done as part of a team.

2. Missing lecture requires your teammates to educate you.

3. That is not their job.

4. There are only 16 lectures.

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Reality Check

• This course is about– problem solving – considering alternatives– organization– writing– presenting– getting a taste of the real world

• Professionalism– projects– reports– attendance– deadlines

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Right Now:

Download Studio Assignments for This Week

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Characteristics of Design

• Multi-stage process

• Large quantities of information

• Many supporting design tools - analysis, optimization, simulation, etc.

• Uncertain path to solution (Not just 1 solution)

• Alternatives, revisions, versions, updates…

• Iterative and cyclic

• Teamwork - interactions between engineers & management

• Multidisciplinary

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Science and Engineering

• Scientific Method– Science is theory corrected by experiment– Predicts the world

• Engineering Method– Application of scientific principles to solve

problems – The ordered sequence of steps used in

engineering problem solving– Incorporates the use of

• heuristics

• logical, ordered, and systematic procedure

– Changes the World

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Design Problem Solving

• Analysis– What needs to be done– What do current products do– What are the necessary functions

• Develop Alternatives – Many, many alternatives

• Decision Making– Picking the Best Among

Alternatives• Information Processing

– Sketches to CAD Drawings– Drawings to Parts– Parts to Assembly

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Design Problem Solving

• Analysis– Turn pasta & tape into a stiff

structure– Support a golf ball

• Alternatives– Long beam, Truss structure– Tape stringers, etc

• Decision Making– Most successful in round 1– Coolest looking

• Information Processing– Turn sketches into a real

structure

Pasta Structure

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Information in Design

• Receive– TV/Cellphone/Ipod– Websites – Management– Journals– Colleagues – Students

• Process – Analysis– Synthesis

• Transmit– Drawings– Documents– Presentations (Design Reviews)

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Pasta Structure• Receive

– Studio Handout

– Instructor, TA

– Teammates

• Process

– Performance specifications

– Time requirements

– Brainstorming ideas

• Transmit

– Sketches

– Prototypes of sections

– Report

Information in Design

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Questions to Continually Ask When Designing

• Where can I sell my product?– What products do my customers need?

• How can I improve my product?– What customer needs are not being met?

• When will my product become obsolete or inappropriate?– How are changes in technology affecting the

marketplace?

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Building Machines

• How can our product be made?– What manufacturing processes can/must be used?

• How can we make the product for less?– Can we use less expensive material or processes?– Can we simplify the design? (cycle back to design)

• How long will it take to make our product?– Will we make it to market on time?– Will we make it in time for the ME2110 contest on

November 20?