PLTW - IED Unit 8 Key Terms

Advanced Computer Modeling
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Exploded Assembly
An assembly drawing in which parts are moved out of position along an axis so that each individual part is visible.
Formula
A mathematical relationship or rule expressed in symbols.
Numeric Constraint
A number value or algebraic equation that is used to control the size or location of a geometric figure.
Parameter
A property of a system whose value determines how the system will behave.
Parametric Modeling
A CAD modeling method that uses parameters to define the size and geometry of features and to create relationships between features. Changing a parameter value updates all related features of the model at once.
Phantom Line
A line used to show the alternate positions of an object or matching part without interfering with the main drawing.
Ratio
The quantitative relation between two amounts showing the number of times one value contains or is contained within the other.
Rib
A relatively thin flat member acting as a brace support. Also called a web.
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