In the paper, forced transverse vibration of fractional viscoelastic Euler-Bernoulli is studied. Based on relationship stress and strain, partial differential equation describing beam considered. The Riemann-Liouville derivative order used. Using Ritz-Galerkin method, transformed into a system equations containing derivatives. dynamic response simply supported to harmonic concentrated force cal...

Passive damping plays an important role in the vibration mitigation of aeronautic structures. In contrast to active systems, passive systems do not require any energy supply. Thus, their readiness is independent, which reduces failure probability compared systems. Constrained Layer Damping (CLD) has become established treatment for bending vibrations. Unlike other such as shock-mounts, CLD can ...

Based on the theory of vehicle track coupling dynamics, the local vibration of the high-speed railway box girder is analyzed by the Finite Element Method and the model is simulated with the solid elements. Through the study of vibration characteristics of the selected 6 sensitive points, the local vibrations in different parts of the box girder are figured out. It is compared the response of th...

Abstract Acoustic Black Holes (ABHs) are structural features that typically realised by introducing a tapering thickness profile into structure results in local regions of wave-speed reduction and corresponding enhancement the damping. In ideal theoretical case, where ABH tapers to zero thickness, reaches wave entering can be perfectly absorbed. practical realisations, however, taper thus remai...

The present work considers the active vibration control of beam like structures with laminated piezoelectric sensor and actuator layers bonded on top and bottom surfaces of the beam. A finite element model based on Euler-Bernoulli beam theory has been developed. The contribution of the piezoelectric sensor and actuator layers on the mass and stiffness of the beam has been considered with modeli...

A weak form Galerkin finite element model for the nonlinear quasi-static and fully transient analysis of initially straight viscoelastic beams is developed using the kinematic assumptions of the third-order Reddy beam theory. The formulation assumes linear viscoelastic material properties and is applicable to problems involving small strains and moderate rotations. The viscoelastic constitutive...

In the present paper, we consider the problem on a transverse impact of a viscoelastic sphere upon an elastic Bernoulli-Euler beam in a viscoelastic medium, the viscoelastic features of which are described by certain viscoelastic operators. The Young’s modulus of the impactor is the timedependent operator, which is defined via the standard linear solid fractional derivative model, while the bul...

In the present paper, we consider the problem on a transverse impact of a viscoelastic sphere upon an elastic Bernoulli-Euler beam in a viscoelastic medium, the viscoelastic features of which are described by certain viscoelastic operators. The Young's modulus of the impactor is the time-dependent operator, which is defined via the standard linear solid fractional derivative model, while the bu...

in this paper, chaotic motion analysis and its control for a non-planar non-linear cantilever beam with axial and lateral parametric excitation in the free end is accomplished. this is a new method for control of chaotic motion of a non-linear planar beam. in this survey, internal resonance of the beam is 2:1 and the initial resonance is in the outside of plane and it is assumed a sub-resonance...

We present an optical technique to image the frequency-dependent complex mechanical response of a viscoelastic sample. Three-dimensional hyperspectral data, comprising two-dimensional B-mode images and a third dimension corresponding to vibration frequency, were acquired from samples undergoing external mechanical excitation in the audio-frequency range. We describe the optical coherence tomogr...