RETRACTION: On the dynamics of an ultra-fast-rotating-induced piezoelectric cantilevered nanodisk surrounded by viscoelastic foundation (Retraction of Vol 51, Pg 1, 2020)

The presented article deals with the vibrational and amplitude of a rotational piezoelectric nanodisk. This small-scaled structure is simulated as a nanodisk restricted by a viscoelastic foundation as the two-parameter. The Coriolis along with centrifugal influences have been considered since it has rotating parameter. The stresses and strains would be obtained using the high-order-shear-deformable-theory (HSDT). The nonlocal-strain-gradient-theory (NSGT) has been taken into account to model accurate size dependency. Moreover, in order to derive boundary conditions (BCs), energy methods have been employed. Thereby, obtaining governing equations, the mentioned methods are able to determine BCs of the piezo-rotating nanodisk as well. Ultimately, the mentioned equations have been solved via a computational model called generalized differential quadrature method (GDQM). Furthermore, MATLAB programming based on the curves drawn has been used to model dynamics of the rotational nano-scaled disk with a range of BCs. The results have shown that the viscoelastic foundation, external voltage, length scale, angular velocity, nonlocality, and configurational properties of piezoelectric nanodisk have an undeniable influence on the vibration and amplitude characteristics of a piezo-rotating nano-scaled disk. As a practical instance in real world industries, the influence of external voltage on the structure's amplitude would be much more dominated than the rotational speed's impact.