Abstract
This research investigates transient vibrational characteristics of a porous functionally graded cylindrical nanoshell under different impulsive loadings with the use of nonlocal strain gradient theory (NSGT). Based on NSGT, two size parameters accounting for stiffness softening and hardening effects are incorporated in modeling of the nanoshell. Impulse forces have three forms of triangular, rectangular and sinusoidal. Two sorts of porosity distributions called even and uneven have been taken into account. Governing equations obtained for porous nanoshell have been solved through inverse Laplace transforms technique to derive dynamical deflections. It is shown that transient responses of a nanoshell are affected by the form and position of impulse loading, amount of porosities, porosities dispensation, nonlocal and strain gradient parameters.
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Forsat, M., Badnava, S., Mirjavadi, S.S. et al. Small scale effects on transient vibrations of porous FG cylindrical nanoshells based on nonlocal strain gradient theory. Eur. Phys. J. Plus 135, 81 (2020). https://doi.org/10.1140/epjp/s13360-019-00042-x
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DOI: https://doi.org/10.1140/epjp/s13360-019-00042-x