Nonlinear vibration behavior of piezoceramics at strong electric field is a well-known phenomenon. In recent experimental studies when the piezoceramics were excited close to their natural frequencies, at weak electric field also nonlinear vibration behavior was observed. This nonlinear vibration behavior was observed in the form of dependence of resonance frequency on the vibration amplitude and nonlinear relationship between excitation voltage and vibration amplitude. This book aims to provide a thorough understanding of nonlinear vibration behavior of piezo beam system subjected to weak...