2103-617 Advanced Dynamics
                    Thitima Jintanawan
                                    Preface 
              
             I write this book, shortly because I love to do it. With this book, I would like to 
             share my own experience on Dynamics from education and researches for over 
             ten years with students and the people in the same field. The book is organized 
             and written from my viewpoints of dynamics, and it is appropriate for the one 
             who study dynamics in the intermediate level. Why written in English? It is about 
             the right time and right situation. When Chulalongkorn University started to 
             promote the faculties to carry out the class in English in the academic year of 
             2001, I joined the program and have an opportunity to teach the Advanced 
             Dynamics class in English. I started to write the first draft in English for the 
             class's lecture notes and continuingly improve it since then. It is the right situation 
             when we have the ME graduate foreign student attending the class in the Year 
             2005. Language is not the obstacle for communication. Instead good writing 
             communication needs a well-organized manuscript that indeed my book still has a 
             room for improvement. 
              
             My first experience in dynamics during the undergraduate years is not different 
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             from everyone's experience in that we simply start with the Newton's 2  Law, and 
             laws of energy and momentum. Taking the motion of a particle as an example, 
             both the Newton's Law and the principle of energy in dynamics have the same 
             root from the law of linear momentum. Later, when I was doing my Master 
             Degree, I learnt the whole new aspect of dynamics, namely, 3-D Dynamics, 
             Dynamic Model and Analysis, Derivation of Equations of Motion, Lagrange's 
             Mechanics, Stability and Rotordynamics. During the time for PhD, I got the first 
             lesson of dynamics there from my advisor. Not as a coursework requirement, he 
             kindly gave me the intensive lectures on dynamics and vibration of deformable 
             bodies such as plate and shell, so that I could have a necessary background to start 
             the research. Next I began to learn the Halmiton’s Principle and the Variational 
             Principle from several courseworks and from self-study. These two principles are 
         fundamentals of Lagrange's mechanics. Truly, My PhD research is the best lesson 
         of dynamics that I have learnt. At that time, I started to use Matlab as a program 
         tool for dynamic simulation and continue writing the Matlab codes nowadays. 
         Also, one of a good memory for Dynamics during those years is the opportunity 
         to attend the seminar "a New Paradigm of Dynamics" by a world famous 
         dynamist who develops the Kane’s method, Prof. Thomas Kane of Stanford 
         University. 
          
         There are two premium dynamists who are my role model. The first person is my 
         supervisor at the University of Melbourne, Dr. Januzt Krodkiewski. He is an icon 
         of the discipline and logic. The second one is my PhD advisor, Prof. Steve Shen. 
         He is an icon of making things simple (no matter how complicate they are). Both 
         of them similarly have an excellent background in Mathematics. I wish I could be 
         a half of the people that I admire. Therefore, it is to them that I dedicate this book. 
          
          
                                           
                                           
                                           
                                           
                                           
                                  Thitima Jintanawan 
                                           
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Copyright 2005
                           Thitima Jintanawan