Page 19 - Singiresu S. Rao-Mechanical Vibrations in SI Units, Global Edition-Pearson (2017)

Preface

Changes in this Edition

This book serves as an introduction to the subject of vibration engineering at the undergraduate level. The style of
the prior editions has been retained, with the theory, computational aspects, and applications of vibration presented
in as simple a manner as possible. As in the previous editions, computer techniques of analysis are emphasized.
Expanded explanations of the fundamentals are given, emphasizing physical significance and interpretation that
build upon previous experiences in undergraduate mechanics. Numerous examples and problems are used to illus-
trate principles and concepts. Favorable reactions and encouragement from professors and students have provided
me with the impetus to prepare this sixth edition of the book.
Several additions and modifications are made to the fifth edition to make the coverage of vibration more com-
prehensive and presentation easier to follow in the sixth edition. Most of these additions and modifications were
suggested by those who have used the text and by several reviewers. Some of these are indicated below.
• A brief discussion of the anatomy of the human ear and how vibrations are converted into sound by the ear.
Experienced engineers can predict the specific cause of malfunction of a machine or engine just by hearing
the sound generated by the malfunction.
• Several new applications of vibration are introduced through new problems. The problems are related to
the vibration of a child restraint in a child-seat in an automobile, the prediction of injury to head in an
automobile accident, the vibratory response of a diver on a high board, the transportation of a precision
instrument, and new problems on vibration control.
• The solutions of five examples and eight illustrations are revised for improved presentation so that the
reader understands the concept/solution process more easily.
• Additional details are included in the sections related to the response of an undamped system under initial
conditions for improved presentation.
• The description and formulation of vibration problems in several different systems of units is considered
to obtain the same response of the physical system.
• A new section titled Beams on Elastic Foundation is added along with illustrative examples and prob-
lems. This topic finds application in practical situations such as a railway track.

• The stability and vibration of branches of trees with birds sitting on them is considered using the basic
principles of mechanics and vibration.
• Nine new examples, 54 new problems (including three new design projects) and 14 new illustrations are
added in this edition.
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