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Steel and Composite Structures
  Volume 35, Number 4, May25 2020, pages 545-554
DOI: http://dx.doi.org/10.12989/scs.2020.35.4.545
 


Nonlocal nonlinear dynamic behavior of composite piezo-magnetic beams using a refined higher-order beam theory
Raad M. Fenjan, Ridha A. Ahmed and Nadhim M. Faleh

 
Abstract
    The present paper explores nonlinear dynamical properties of piezo-magnetic beams based on a nonlocal refined higher-order beam formulation and piezoelectric phase effect. The piezoelectric phase increment may lead to improved vibrational behaviors for the smart beams subjected to magnetic fields and external harmonic excitation. Nonlinear governing equations of a nonlocal intelligent beam have been achieved based upon the refined beam model and a numerical provided has been introduced to calculate nonlinear vibrational curves. The present study indicates that variation in the volume fraction of piezoelectric ingredient has a substantial impact on vibrational behaviors of intelligent nanobeam under electrical and magnetic fields. Also, it can be seen that nonlinear free/forced vibrational behaviors of intelligent nanobeam have dependency on the magnitudes of induced electrical voltages, magnetic potential, stiffening elastic substrate and shear deformation.
 
Key Words
    refined beam; dynamic behavior; forced vibration; free vibration; piezoelectric reinforcement; nonlocal theory
 
Address
Raad M. Fenjan, Ridha A. Ahmed and Nadhim M. Faleh: Al-Mustansiriah University, Engineering Collage P.O. Box 46049, Bab-Muadum, Baghdad 10001, Iraq
 

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