1. Chapter 5 Solid Modeling
University of Illinois-Chicago
Chapter 5
Solid Modeling
Principles of
Computer-Aided
Design and
Manufacturing
Second Edition 2004
ISBN
Author: Prof. Farid. Amirouche
University of Illinois-Chicago

2. 5.2 CONSTRUCTION TECHNIQUES
CHAPTER 5
6.2 SYSTEM MODELING
5.1 INTRODUCTION
5.2 CONSTRUCTION TECHNIQUES
TThese techniques include :
1 - Boolean operation
2 - Sweeping
A - Automated filleting and chamfering
4 - Tweaking
F - Fleshing out of wireframes and projections
Principles of Computer-Aided Design and Manufacturing Second Edition 2004 – ISBN
Author: Prof. Farid. Amirouche, University of Illinois-Chicago

3. 5.2.1 Boolean Operation CHAPTER 5 6.2 SYSTEM MODELING
Figure 5.1 Boolean operations
Principles of Computer-Aided Design and Manufacturing Second Edition 2004 – ISBN
Author: Prof. Farid. Amirouche, University of Illinois-Chicago

4. Figure 5.2 Boolean operations applied to a square and a circle
CHAPTER 5
6.2 SYSTEM MODELING
Figure 5.2 Boolean operations applied to a square and a circle
Principles of Computer-Aided Design and Manufacturing Second Edition 2004 – ISBN
Author: Prof. Farid. Amirouche, University of Illinois-Chicago

5. 5.2.2 Sweeping CHAPTER 5 6.2 SYSTEM MODELING Figure 5.3(a) Sweeping
Principles of Computer-Aided Design and Manufacturing Second Edition 2004 – ISBN
Author: Prof. Farid. Amirouche, University of Illinois-Chicago

6. CHAPTER 5 6.2 SYSTEM MODELING Figure 5.3(b) Turning
Figure 5.3(c) Swinging
Principles of Computer-Aided Design and Manufacturing Second Edition 2004 – ISBN
Author: Prof. Farid. Amirouche, University of Illinois-Chicago

7. 5.2.3 Automated Filleting and Chambering
CHAPTER 5
6.2 SYSTEM MODELING
5.2.3 Automated Filleting and Chambering
Figure 5.4 Filleting
Principles of Computer-Aided Design and Manufacturing Second Edition 2004 – ISBN
Author: Prof. Farid. Amirouche, University of Illinois-Chicago

8. 5.2.5 Fleshing Out Wireframes and Projections
CHAPTER 5
6.2 SYSTEM MODELING
5.2.4 Tweaking
Figure 5.5 Tweaking
5.2.5 Fleshing Out Wireframes and Projections
Principles of Computer-Aided Design and Manufacturing Second Edition 2004 – ISBN
Author: Prof. Farid. Amirouche, University of Illinois-Chicago

9. 5.3 REPRESENTATION SCHEMES
CHAPTER 5
6.2 SYSTEM MODELING
5.3 REPRESENTATION SCHEMES
5.3.1 Instantiation
Figure 5.6 Some system supplied primitives
Principles of Computer-Aided Design and Manufacturing Second Edition 2004 – ISBN
Author: Prof. Farid. Amirouche, University of Illinois-Chicago

10. Figure 5.7 A user-defined primitive
CHAPTER 5
6.2 SYSTEM MODELING
Figure 5.7 A user-defined primitive
Principles of Computer-Aided Design and Manufacturing Second Edition 2004 – ISBN
Author: Prof. Farid. Amirouche, University of Illinois-Chicago

11. 5.3.2 Boundary Representation
CHAPTER 5
6.2 SYSTEM MODELING
5.3.2 Boundary Representation
Figure 5.8 Sweeping and swinging operations
Principles of Computer-Aided Design and Manufacturing Second Edition 2004 – ISBN
Author: Prof. Farid. Amirouche, University of Illinois-Chicago

12. 5.3.3 Constructive Solid Geometry
CHAPTER 5
6.2 SYSTEM MODELING
5.3.3 Constructive Solid Geometry
Figure 5.9 Boolean operations (solid objects).
Principles of Computer-Aided Design and Manufacturing Second Edition 2004 – ISBN
Author: Prof. Farid. Amirouche, University of Illinois-Chicago

13. Figure 5.10 Constructive solid geometry.
CHAPTER 5
6.2 SYSTEM MODELING
Figure 5.10 Constructive solid geometry.
Principles of Computer-Aided Design and Manufacturing Second Edition 2004 – ISBN
Author: Prof. Farid. Amirouche, University of Illinois-Chicago

14. Example 5.1 Construction of a Wrench
CHAPTER 5
6.2 SYSTEM MODELING
Example 5.1 Construction of a Wrench
Using boundary representation, construct the part shown in Figure 5.11.
Figure 5.11 Wrench
Solution
Figure Boolean Operation
Principles of Computer-Aided Design and Manufacturing Second Edition 2004 – ISBN
Author: Prof. Farid. Amirouche, University of Illinois-Chicago

15. Example 5.2 Construction of a Solid Model
CHAPTER 5
6.2 SYSTEM MODELING
Example 5.2 Construction of a Solid Model
Using constructive solid geometry representation, construct the solid model shown in Fig 5.13.
Figure A solid Model
Principles of Computer-Aided Design and Manufacturing Second Edition 2004 – ISBN
Author: Prof. Farid. Amirouche, University of Illinois-Chicago
Solution

16. Solution CHAPTER 5 6.2 SYSTEM MODELING
Figure Boolean operations on the solid model
Principles of Computer-Aided Design and Manufacturing Second Edition 2004 – ISBN
Author: Prof. Farid. Amirouche, University of Illinois-Chicago

17. 5.3.4 Cellular Decomposition
CHAPTER 5
6.2 SYSTEM MODELING
5.3.4 Cellular Decomposition
Simple Regular Grid.
Figure 5.15 Regular grid.
Principles of Computer-Aided Design and Manufacturing Second Edition 2004 – ISBN
Author: Prof. Farid. Amirouche, University of Illinois-Chicago

18. Octree Adaptive Grid. 1. Classical Octree Encoding. CHAPTER 5
6.2 SYSTEM MODELING
Octree Adaptive Grid.
1. Classical Octree Encoding.
Figure 5.16 Classical octree representation.
Principles of Computer-Aided Design and Manufacturing Second Edition 2004 – ISBN
Author: Prof. Farid. Amirouche, University of Illinois-Chicago

19. 2. Exact Octree Encoding CHAPTER 5 6.2 SYSTEM MODELING
Figure 5.17 Parenthesize linear representation
2. Exact Octree Encoding
Figure 5.18 Octree encoding
Principles of Computer-Aided Design and Manufacturing Second Edition 2004 – ISBN
Author: Prof. Farid. Amirouche, University of Illinois-Chicago

20. CHAPTER 5 6.2 SYSTEM MODELING
Principles of Computer-Aided Design and Manufacturing Second Edition 2004 – ISBN
Author: Prof. Farid. Amirouche, University of Illinois-Chicago