An eigenfunction-matching method is developed for the problem of linear water-wave scattering by a circular floating porous elastic plate, and a coupled boundary-element and finiteelement method is developed for the problem in which the plate is of arbitrary shape. The methods are shown to produce the same solutions for a circular plate, and their convergence properties are established. The imp...

Considering the effect of geometric nonlinearity and uniformly distributed time-varying temperature, the bifurcation behaviors and chaotic phenomena of a bimetallic thin circular plate are investigated. First of all, the nonlinear dynamic equation for bimetallic plate is established and further reduced to Duffing equation of harmonic parametric excitation, from which the pitchfork bifurcation p...

In this study, the analysis of transverse vibrations of rectangular plate with circular central hole with different boundary conditions is studied and the natural frequencies and natural modes of a rectangular plate with circular hole have been obtained. To solve the problem, it is necessary to use both Cartesian and polar coordinate system. The complexity of the method is to apply an appropria...

An improved evacuated absorber tube (AT) design consisting of a semi-circular is proposed for large-aperture parabolic trough concentrator. The also contains flat-plate radiation shield in the vacuum part glass cover. To enhance heat transfer AT, different fins geometries added to bottom AT were analyzed here. Compared an without fins, thermal efficiency could be increased from 75.7% 76.9% with...

The purpose of this study was to investigate the deformation and flexural properties of acrylic and urethane polymers reinforced with glass fiber sheet. Four types of specimen — self-curing resin plate (R) , light-curing oligomer plate containing a reinforcement (GO) , and self-curing resin plate containing a reinforcement on one (GR) or both (GRG) sides — were prepared with three thicknesses: ...

Abstract Previous investigation of seismic anisotropy indicates the presence a simple mantle flow regime beneath Turkish-Anatolian Plateau and Arabian Plate. Numerical modeling suggests that this is component large-scale global associated with African superplume, which plays key role in geodynamic framework Arabia-Eurasia continental collision zone. However, extent impact pattern farther east I...

in this research three-dimensional free vibration analysis of functionally graded circular plate with various boundary conditions is achieved. a semi-analytical method, which makes use of the state space method and the one-dimensional differential quadrature method, is used to obtain the vibration frequencies and dynamic responses of circular plates. numerical results are given to demonstrate t...