https://doi.org/10.1140/epjp/i2018-12338-9
Regular Article
A higher-order nonlocal strain gradient mass sensor based on vibrating heterogeneous magneto-electro-elastic nanoplate via third-order shear deformation theory
1
School of Mechanical Engineering, Iran University of Science and Technology, Narmak, 16842-13114, Tehran, Iran
2
Department of Mechanical Engineering, College of Engineering, Sanandaj Branch, Islamic Azad University, Sanandaj, Iran
3
Department of Industrial Engineering, Najafabad Branch, Islamic Azad University, Isfahan, Iran
* e-mail: sina_ghahnavieh@alumni.iust.ac.ir
Received:
5
July
2018
Accepted:
22
October
2018
Published online:
17
December
2018
The sensitivity property of a magneto-electro-elastic nanoplate made of functionally graded materials with concentrated masses under different boundary conditions is investigated in this article according to the third-order shear deformation assumption. Both hardening and softening behaviors of materials are taken into account based on the nonlocal strain gradient theory for more accurate modelling of size-dependent structures. The effective material properties of a magneto-electro-elastic nanoplate are supposed to vary continuously across the thickness direction using a power law model in terms of the volume fractions of material phases. The governing equations are achieved utilizing Hamilton’s principle and then solved by applying the Galerkin technique. Numerical investigations are performed to illustrate the effects of initial external electric and magnetic potentials, aspect ratio, material length scale parameters, and material gradient on the changes of nanoplate frequency shift curves. It is clearly proved that these factors have highly significant effects on the sensitivity performance of mass nanosensor.
© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature, 2018