Questions for Review - Chapter 5

1		What is a nonmanifold object? Sketch an example of one. Need a Hint?
2		Describe the differences and similarities of B-rep models and CSG models; do the same for wireframe models and B-rep models. Need a Hint?
3		Define the three types of Boolean operations, and sketch examples of each one. Can you derive the same final object using different Boolean operations and/or primitives? Need a Hint?
4		What is "design intent"? Why does this play a role in planning the construction of a constraint-based model? Need a Hint?
5		What are the basic elements of a generalized sweep? Describe the major types of generalized sweeps used in feature creation. Need a Hint?
6		What are workplanes used for? What are five ways a workplane can be defined? Need a Hint?
7		What is the difference between implicit and explicit constraints? Give examples of four types of implicit geometric constraints. Need a Hint?
8		Give an example of a parent-child relationship. How is a feature tree used to identify parent-child relationships? Need a Hint?
9		What are the two primary types of duplication methods? What input parameters are needed to define each one? Need a Hint?
10		What are the elements used to define a view of a 3-D model? Which types of view commands don't change the projection of the model? Need a Hint?
11		What is the difference between unidirectional and bidirectional associativity? What are the advantages and disadvantages of bidirectional associativity? Need a Hint?
12		How is the base view used in generating multiviews from a 3-D model? Need a Hint?
13		What are the two primary ways of constraining parts in an assembly? What modifier is often used with these? Need a Hint?
14		Define the types of analyses that can be used with 3-D models. Will all of these always be used when designing a part? Need a Hint?
15		What advantages are there for using data from a 3-D model when analyzing the manufacture of a part? Need a Hint?