Engineering Design Process The Big Idea The Engineering Design Process is a method that is used to solve technological challenges to change and improve products for the way we live.
Identify a Challenge Present the Solution Explore Ideas Engineering Design Process Test & Evaluate Plan & Develop
Identify a Challenge Present the Solution Explore Ideas Identify a problem or need Examineexisting Products Identify requirements Apply for a patent Make a commercial Sell the product Analyze profit/loss Engineering Design Process Brainstorm for ideas Write down notes of ideas Make sketches Test & Evaluate Plan & Develop Select an approach Establish a scale Make a scale drawing Get tools and materials Build a prototype Test the prototype Survey people Analyze survey data Redesign if necessary
Design is a creative planning process that leads to useful products and systems.
The systematic application of math, science, and technical principles • Used to produce tangible end products that meet our needs and desires.
Modeling, testing, evaluating, and modifying are used to transform ideas into practical solutions. • The cycle ends when the products satisfies all of the goals related to the criteria. 5/10 Copy the Graphic Below Modeling Testing Modifying Evaluating
Drill • There is no perfect design • Multiple solutions can exist • Not all work in all environments
Requirements for a design are made up of criteria and constraints • Criteria - rules • Constraints - limits 5/9 Copy
____________for a _________ are made up of criteria and constraints • Criteria - ______________ • Constraints - _________ 5/9 Copy
Rules and Limits • Criteria- A desired specification of a product. A rule concerning the outcome. • Ex. The chair must support up to 220 lbs and be able to stack with other chairs • Constraint – A limit to the design process. • Ex. The chair must be ready in 6 weeks and cost less than $50 each
Factors in Selecting A Structural design Function Climate Cost Style Convenience Building Laws and Codes
Drill • Structural Efficiency – a measure of how many “times its own weight” a structure can support. • Efficiency = Weight held/weight of structure Safety test today!
Drill: Copy and give examples • Tension – a stretching force, two forces pulling an object in opposite directions • Compression – a squeezing force, two forces pushing in on an object from opposite directions • ***Examples: List an example for each of these forces
Drill • Torsion is a “twisting” force on an object • Examples of torsion • Turning doorknob • Pedaling a bike
Drill: Copy • Shear force is like compression but the two opposing forces are “offset” • Example • Scissors • A nail holding a picture on the wall
9/27 Copy and label • Are the diagonals under tension or compression? New York Left Lane Only
Modeling, testing, evaluating, and modifying are used to ________ _____ into practical solutions. • The cycle ends when the products satisfies all of the _______ related to the ________. 5/10 Copy the Graphic Below
Factors in Selecting A ________ design Function _______ _______ Style Convenience Building _____ and Codes
There is ____ _______ ________ • ______________ solutions can exist • Not all ________ in all ______________
Identify a _________ _________ the Solution ___________ Ideas Engineering Design Process _________ & Evaluate Plan & _________