In this paper, the nonlinear vibration analysis of a thin cylindrical shell made of Functionally Graded Material (FGM) resting on a nonlinear viscoelastic foundation under compressive axial and lateral loads is studied. Nonlinear governing coupled partial differential equations of motions (PDEs) for cylindrical shell are derived using improved Donnell shell theory. The equations of motions (EOM...

This paper is concerned with the surface and small scale effects on transverse vibration of a viscoelastic single-layered graphene sheet (SLGS) subjected to an in-plane magnetic field. The SLGS is surrounded by an elastic medium which is simulated as Visco-Pasternak foundation. In order to investigate the small scale effects, the nonlocal elasticity theory is employed due to its simplicity and ...

The aim of this paper is to assess the effectiveness nonlinear viscoelastic damping in controlling base-excited vibrations. Specifically, focus on investigating robustness base isolation performance system response due a wide set possible excitation spectra. dynamic model derived study simple structure whose provided via Rubber-Layer Roller Bearing (RLRB) (rigid cylinders rolling rigid plates w...

Stabilization of the particle beam position with respect to the focusing optics in the third generation synchrotron light sources is crucial to achieving low emittance and high brightness. For this purpose, global and local beam orbit correction feedbacks will be implemented in the APS storage ring. In this article, we will discuss application of digital signal processing to par-ticle/photon be...

Abstract Footbridges are among long-span light-weight structures that because of their low damping ratio susceptible to vibration. Excessive vibration in footbridges usually occurs when they subjected rhythmic dynamic loads caused by human activities like walking and running. In order mitigate the induced vibrations footbridges, an increase is often suggested as most economical approach. Tuned ...

Modeling and control of a viscoelastic beam are considered. Piezoelectrical elements are bonded to the beam and used as actuators. The beam is also equipped with a strain gauge that serves as a sensing device. The beam system is described by the Euler-Bernoulli beam equation, which is Fourier transformed and numerically solved in the frequency domain. Then, two different approaches are evaluate...

Two-to-one parametric resonance in transverse vibration of an axially accelerating viscoelastic string with geometric nonlinearity is investigated. The transport speed is assumed to be a constant mean speed with small harmonic variations. The nonlinear partial differential equation that governs transverse vibration of the string is derived from Newton’s second law. The method of multiple scales...