The free vibrations of cantilever slender beams polymers, which are viscoelastic materials, theoretically described using the simple Euler–Bernoulli assumption. comparison between theory and experimental data collected for a thermoplastic elastomer, polyether block amide, shows very satisfactory results. Consequently, is used thoughtful analysis impact material parameters beam geometry on its v...

19 In this paper, the viability of directly exposing thin films of liquid poly(dimethylsiloxane) (PDMS) to elec20 tron beam (e-beam) irradiation using e-beam lithographic methods for the purpose of creating perma21 nent micro-scale components has been investigated. By exposing 1.1 lm thickness PDMS films to 22 doses in the range 10–50,000 lC/cm, it was discovered that the structure of the resul...

The vibration attenuation mechanism of shear thickening fluid- (STF-) filled sandwich structures was investigated in this study. Structural equivalent damping, stiffness, and mass increased simultaneously with the increase volume fraction fluid. However, damping ratio decreased natural frequency structural mass. Thus, not a monotonically increasing function STF. A modified strain model layer de...

Abstract The presented work concerns the kinematically excited transient vibrations of a cantilever beam with mass element fixed to its free end. Euler–Bernoulli theory and fractional Zener model material are assumed. A Caputo derivative is used formulate viscoelastic law. characteristic equation, modal frequencies, eigenfunction orthogonality conditions achieved for considered. equations motio...

Semi-analytical solutions for vibration analysis of nonlocal piezoelectric Kirchhoff plates resting on viscoelastic foundation with arbitrary boundary conditions are derived by developing Galerkin strip distributed transfer function method. Based on the nonlocal elasticity theory for piezoelectric materials and Hamilton's principle, the governing equations of motion and boundary conditions are ...

This study develops a comprehensive vibrational analysis of rotating nanobeams on visco-elastic foundations with thermal effects based the modified couple stress and Eringen’s nonlocal elasticity theories. approach accurately simulates size effects. Higher-order shear deformation beam theory generalized differential quadrature method are used to obtain numerical results. The parameters, length ...

In this article, bending, buckling, and free vibration of viscoelastic sandwich plate with carbon nanotubes reinforced composite facesheets and an isotropic homogeneous core on viscoelastic foundation are presented using a new first order shear deformation theory. According to this theory, the number of unknown’s parameters and governing equations are reduced and also the using of shear correct...