Introduction to Vibrations

This book opens with an explanation of the vibrations of a single degree-of-freedom (dof) system for all beginners.

Multi-DOF Systems and Modal Analysis

Subsequently, vibration analysis of multi-dof systems is explained by modal analysis.

Mode Synthesis Modeling

Mode synthesis modeling is then introduced for system reduction, which aids understanding in a simplified manner of how complicated rotors behave.

Rotor Balancing Techniques

Rotor balancing techniques are offered for rigid and flexible rotors through several examples.

Gyroscopic Influences and Vibration Evaluation

Consideration of gyroscopic influences on the rotordynamics is then provided and vibration evaluation of a rotor-bearing system is emphasized in terms of forward and backward whirl rotor motions through eigenvalue (natural frequency and damping ratio) analysis.

Blade Vibrations and Reference Frames

In addition to these rotordynamics concerning rotating shaft vibration measured in a stationary reference frame, blade vibrations are analyzed with Coriolis forces expressed in a rotating reference frame.

Other Phenomena in Rotordynamics

Other phenomena that may be assessed in stationary and rotating reference frames include stability characteristics due to rotor internal damping and instabilities due to asymmetric shaft stiffness and thermal unbalance behavior.