COMPUTER-AIDED MECHANICAL DESIGN AND ANALYSIS

In the rapidly evolving field of mechanical design, the
integration of computer-aided tools has become indispensable. This
book, “Computer-Aided Mechanical Design and Analysis,” aims to
provide a comprehensive guide to the concepts, techniques, and
applications of computer graphics, finite element modeling, design
optimization, and case studies that leverage these technologies.
The primary objectives of this book are to introduce the
fundamental concepts of computer-aided design (CAD) and
computer-aided engineering (CAE), present the design processes and
methodologies employed in mechanical engineering, explore various
design models and their practical applications, discuss the principles
of 3D object representation and viewing, explain the finite element
method (FEM) and its application in mechanical analysis, delve into
the optimization techniques used to enhance mechanical designs, and
provide real-world case studies that illustrate the application of CAD
and optimization in mechanical design.
The book is organized into five main sections. The first
section, “Introduction to Computer Graphics,” lays the foundation by
introducing the concepts of computer-aided design, the design
process, and various design methodologies such as Beitz’s and Pahl’s
approach and Ohsuga’s approach. It also covers essential topics like
ANSI standards, tolerance basics, and geometric tolerances. The
second section, “3D Object Representation and Viewing,” focuses on
the representation and visualization of 3D objects, including hidden
line and surface removal, illumination models, and three-dimensional
viewing techniques. The third section, “Analysis Using Finite
Element Models,” delves into the finite element method, explaining
mesh generation, truss definitions, boundary conditions, and the
formulation of governing equations. This section provides a detailed
understanding of how FEM is used for mechanical analysis. The
fourth section, “Design Optimization,” covers optimization problems,

solution techniques, and optimality conditions. It discusses both
gradient-based and non-gradient-based approaches, such as genetic
algorithms and simulated annealing, and their applications in practical
engineering problems. The final section, “Case Studies,” presents case
studies that demonstrate the practical application of CAD and
optimization techniques. These include design automation, digital
twin approaches, sustainable product design, and metal additive
manufacturing.
This book is intended for mechanical engineering students and

professionals who seek to deepen their understanding of computer-
aided design and analysis, engineers and designers looking to enhance

their skills in using CAD/CAE tools for mechanical design, and
researchers and practitioners interested in the latest advancements and
applications of design optimization and finite element analysis.
We extend our gratitude to the numerous contributors,
reviewers, and industry experts who provided valuable insights and
feedback throughout the development of this book. Their expertise
and dedication have greatly enriched the content and quality of this
work.
We hope that this book serves as a valuable resource and
reference for anyone involved in the field of mechanical design and
analysis. As technology continues to advance, the principles and
techniques covered in this book will remain crucial in driving
innovation and excellence in engineering design.