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Principles of Computer-Aided Design and Manufacturing 2nd ed
The book is divided into 15 chapters and provides a unique balance of topics that cover design, 3D transformation and geometry manipulation, surface creations, solid modeling, optimization, finite elements, robotics and robot economics, and CAM implementation.
Chapter 1 provides a historical perspective of CAD and discusses virtual reality as it is used in our current engineering environment (the latter is a topic that will need to be explored further down the road). Chapter 2 addresses the different stages in design and provides concrete examples showing how these steps can be accomplished. The unique feature of this chapter is the parametric and variational design concept. In this textbook I have made an effort to enlighten the students with the need for these techniques to be taken seriously as they might become standard in the near future. The blending of man and machine is an effective tool when CAD systems are allowed to participate in the design and manufacturing process by aiding in the problem formulation, synthesis, conceptualization, and, of course, analysis. Once the students have had some exposure to CAD in general, Chapter 2 could be covered at any part of the course. I urge the instructors and readers to take the time and go over these examples and to create their own examples to appreciate the benefits of these tools.
Chapter 3 discusses 2D and 3D transformations and geometry manipulation, and provides an in-depth analysis of images in 2D and 3D, and includes isometric views. Chapter 4 explains the fundamentals underlying splines, parametric and nonparametric curves, and Bezier curves and surfaces. A number of examples are included to assist the students in understanding how the concepts are implemented. Depending on how advanced the students are, selected topics can be skipped or simply assigned as additional material for the class.
Chapter 5 introduces the concept of solid modeling and the various construction techniques and representation schemes in modeling. The students will apply some of these concepts in their lab work working with the making of solid models in CAD.
Chapter 6 covers various techniques of optimization and introduces the students to the basic concepts of how to formulate an objective function, define the appropriate constraints, and choose the analytical tools to solve the problem. This chapter also focuses on popular techniques in optimization so that senior students and first-year graduate students will have some familiarity with their use.
Chapters 7 through 10 form a unique combination of teaching the finite element method to our junior and senior students without the burden of heavy calculus. It is one of the major strengths of this textbook. If a curriculum is more focused on analysis, all chapters can be covered; otherwise, the instructor is given the choice of covering FEM by selecting the appropriate topics) for the class. This would include stress analysis, heat conduction, dynamic analysis, and vibration, or simply teaching the basic formulation of FEM as described in Chapter 7. The examples solved in these chapters represent real applications and will encourage the students to develop a good appetite for FEM.
Computer-aided manufacturing is introduced in Chapters 11 through 15. I have opted to focus on key topics of interest to the students such as robotics and economic impact, group technology, and computer-integrated manufacturing. These are some of the features that need to be understood in the integration of CAD and CAM.
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