ENGINEERING DESIGN Licking Heights Central CAD

Natural World vs Designed World

What is Engineering?

ENGINEERING DESIGN Most engineering designs

are considered inventions, devices or systems.

Some can be improvements on existing devices, processes or systems.

Step by step methodology required.

Engineers are problem solvers and create our designed world.

DESIGN vs ANALYSIS PROBLEMS Analysis Problem

Specific solution Only 1 answer

Design Problem Open ended solution Many answers

160 Feet

SOLVING DESIGN PROBLEMS Iterative Process (cyclical) “Going back to the

drawing board” is always an option.

Wright Brothers tested first with kites and did over 700 glider flights before they achieved their goal.

Solutions don’t just appear they require a process.

Scientific Method

The Engineering Design Process

1. IDENTIFY THE PROBLEM Identify and

Establish the Need Develop a Problem

Statement Establish Criteria for

Success Do research and

find out what have others done before.

2. BRAINSTORM All ideas are welcome.

There is no bad idea; write them all down!

Be Creative Creativity is not something you

are born with. It comes from a conscious effort to think and act creatively.

Keep an Open Mind Take Risks See the “Whole Picture” Choose the best solution to

the problem.

3. DESIGN Functional analysis (Will it

solve the problem?) Ergonomics (Will humans be

able to use it comfortably ) Aesthetics (does it look good?) Manufacturability/Testability

(Do you have the resources and time to build it?)

Product safety and liability (Will it cause injury to humans or damage the environment?)

Economic and market analysis (Will people buy/use it?)

Regulatory and Compliance (Does it follow the rules/laws?)

4a. BUILD Gather Materials

and tools. Build a Prototype

first fully operational production of the complete design solution

4b. TEST AND EVALUATE Does it meet the

criteria for success? What is Concurrent

Engineering Computer Aided Design

(CAD) Are there some

tweaks to your solution that would improve performance?

Is there a better solution altogether?

4c. REDISGN Go back to the

drawing board What went well? What failed and

how can it be improved?

5. SHARE SOLUTION What is the best

feature of your design?

What would you do differently if given more time and resources?

What were the different steps you had to do to get your project to work the way you wanted?

The Engineering Design Process

Citations

Khandani, Seyyed, The Engineering Design Process, August 2005

The Design Squad, http://pbskids.org/designsquad/parentseducators/workshop/process_id.html , 31 July, 2011

Rubber Band Racers Project

• You will be divided into groups of 2.• As a team develop a car powered by rubber

bands from everyday items, and that the rubber band car must be able to travel a distance of at least 3 meters within a 1 meter wide track. Rubber bands cannot be used to slingshot the cars. The car that can travel within the track for the greatest distance is the winner.