Mechanical Vibrations
Tony L. Schmitz l K. Scott Smith
Mechanical Vibrations
Modeling and Measurement
Tony L. Schmitz
Department of Mechanical Engineering
and Engineering Science
University of North Carolina at Charlotte
Charlotte, NC, USA
tony.schmitz@uncc.edu
K. Scott Smith
Department of Mechanical Engineering
and Engineering Science
University of North Carolina at Charlotte
Charlotte, NC, USA
kssmith@uncc.edu
Please note that additional material for this book can be downloaded from
http://extras.springer.com
ISBN 978-1-4614-0459-0
DOI 10.1007/978-1-4614-0460-6
Springer New York Dordrecht Heidelberg London
e-ISBN 978-1-4614-0460-6
Library of Congress Control Number: 2011934974
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To our children, Jake, BK, Kellye, and Kyle.
Preface
In this textbook, we describe essential concepts in the vibration analysis of
mechanical systems. The book incorporates the required mathematics, experimen-
tal techniques, fundamentals of modal analysis, and beam theory into a unified
framework and is written to be accessible to undergraduate students, researchers,
and practicing engineers alike. We based the book on undergraduate courses in
mechanical vibrations that we have previously offered and developed the text to be
applied in a traditional 15-week course format. It is appropriate for undergraduate
engineering students who have completed the basic courses in mathematics
(through differential equations) and physics and the introductory mechanical engi-
neering courses including statics, dynamics, and mechanics of materials.
We organized the book into nine chapters. The chapter topics are summa-
rized here.
l Chapter 1 – We introduce the types of mechanical vibrations, damping, and
periodic motion.
l Chapter 2 – We explore topics in single degree of freedom free vibration,
including the equation of motion, the damped harmonic oscillator, and unstable
behavior.
l Chapter 3 – We introduce single degree of freedom forced vibration and discuss
the frequency response function, rotating unbalance, base motion, and the
impulse response.
l Chapter 4 – We extend the Chap. 2 analysis to consider two degree of freedom
free vibration. This includes the eigensolution for the equations of motion and
modal analysis.
l Chapter 5 – We extend the Chap. 3 analysis to consider two degree of freedom
forced vibration. We describe complex matrix inversion, modal analysis, and the
dynamic absorber.
l Chapter 6 – In this chapter we analyze model development by modal analysis.
This incorporates the peak picking approach for identifying modal parameters
from a system frequency response measurement and mode shape measurement.
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