Dynamic responses of adhesively bonded tubular joints subjected to a harmonic axial load were evaluated with the use of a shear lag model. Adherents were assumed to be elastic and the adhesive was taken to be a viscoelastic material. Effects of tubular joint geometries, material properties and adhesive properties on the dynamic response of the system were investigated. The results showed that t...

Abstract We propose a new kind of compound optical vortex (COV) generator in this paper. The device consists an inner spiral phase plate (SPP) and outer annular plate. There is opaque band between two SPPs. Under the flat-top beam irradiation, concentric multi-ring COV rings with different topological charges radial radii can be generated. theoretical analysis lays foundation for design generat...

Viscoelastic fluids, such as polymers, paints, and DNA suspensions, are almost everywhere very useful in the industry. This article aims to study significance of ramped temperature dynamics viscoelastic fluid. Magnetohydrodynamic (MHD) effect is considered presence Lorentz force. The flow a porous medium using generalized Darcy’s law. Heat transfers through convection, fluid near plate takes he...

Viscoelastic dampers are conventional passive vibration control devices with excellent energy dissipation performance. The fractional derivative has a simple form and high accuracy in the modelling of viscoelastic materials/dampers. internal variables reflect state evolution materials, often used to analyze deformation thermal process materials. In present work, mechanical properties plate-shea...

PURPOSE Platelet inhibition is a key strategy in the management of atherothrombosis. However, the large variability in response to current strategies leads to the search for alternative inhibitors. The antiplatelet effect of the inorganic salt sodium tungstate (Na2O4W), a protein tyrosine phosphatase 1B (PTP1B) inhibitor, has been investigated in this study. METHODS Wild-type (WT) and PTP1B k...

Modal strain energy (MSE) method is a widely used approximation approach for parameter calculation of damped composite structures. In this paper, iterative MSE proposed to calculate the loss factor damping structure by considering frequency dependence modulus and viscoelastic materials. The applied free spline, plate constrain plate. results show that: obtains minimum relative errors less than ...

A two-phase steady-state model for the percolation of aqueous humor through the trabecular meshwork (TM) in eye has been developed. The model treats the meshwork as an annular porous cylinder comprised of two concentric rings that represent the uveal-corneoscleral meshwork and juxtacanalicular meshwork. Both the rings are assumed to be made up of homogeneous, isotropic, viscoelastic material sw...

Edge fracture, the sudden indentation of a viscoelastic fluid's free surface, often occurs when sufficiently strong shear is applied to fluid, rendering rheological measurements at high rates difficult. We show that sealing fluid sample's surface with nontoxic liquid metal Galinstan can delay fracture occurrence, extending measurable rate range cone-and-plate fixture by decade. The method's eff...

Repulsion, induced from quantum vacuum fluctuations, for an anisotropically polarizable atom on the symmetry axis of annular disc is studied. There exists two torsion free points each side disc, where interaction energy orientation independent. The position second points, either shown to determine dependence at distances far plate, revealing a geometrical dependence. In ring limit new repulsion...