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 development of intelligent control approaches for vibration reduction of flexible plate structures are investigated and reported in this thesis. In this work active intelligent control comprises a set of control techniques based on particle swarm optimisation (PSO), real coded genetic algorithm (RCGA) and artificial immune system (AIS). A traditional method of recursive least squares ( U S ...

External sources such as traffic and construction work cause noise vibration in nearby buildings, potentially annoying human residents. Today, almost every fifth European is harmfully affected by vibration. Wave barriers placed on or embedded within the soil between source receiver can mitigate transmission of ground vibration, airborne be reduced a similar manner with screen acting barrier. As...

The present work aims to study the free vibration, buckling and post-buckling behaviors of bidirectional functionally graded (BDFG) microbeams. material properties a BDFG microbeam were varied continuously in both thickness axial directions. Furthermore, four different kinds distribution function taken into consideration, two which symmetrical direction, remaining asymmetrical. Employing Timosh...

Abstract The cubic or third-power (TP) nonlinear energy sink (NES) has been proven to be an effective method for vibration suppression, owing the occurrence of targeted transfer (TET). However, TET is unable triggered by low initial input, and thus TP NES would get failed under low-amplitude vibration. To resolve this issue, a new type with fractional nonlinearity, e.g., one-third-power (OTP) p...

Within the Vibration Piezoelectric Energy Harvesting (VPEH) framework, this paper investigates and designs an optimal piezoelectric harvester (PH) under stochastic real-time vibrations using a step-by-step guideline from electrical mechanical perspective. A stochastic-excitation high-order-shear-deformation finite element (FE) method, with experimental verifications, analyzed trapezoid non-unif...