In the present research, a unified formulation for free vibration analysis of the bidirectional functionally graded conical and cylindrical shells and annular plates on elastic foundations is developed. To cover more individual cases and optimally tailored material properties, the material properties are assumed to vary in both the meridian/radial and transverse directions. The shell/plate is a...

This study investigated bending, buckling, and free vibration responses of hyperbolic shear deformable functionally graded (FG) higher order beams. The material properties of FG beams are varied through thickness according to power law distribution; here, the FG beam was made of aluminium/alumina, and the hyperbolic shear deformation theory was used to evaluate the effect of shear deformation i...

assembled into complexes. These reactions include acetylation and deacetylation of histones, chromosome remodeling, etc. The authors are, of course, aware of Genes & Signals this, and have broadened their use of the word " recruit-By Mark Ptashne and Alexander Gann ment " to include, for example, the role of the lambda Cold Spring Harbor, NY: Cold Spring Harbor CI repressor in stimulating trans...

In this paper, based on the nonlocal Timoshenko beam theory, a nonlinear model is presented for the vibrational behavior of carbon nanotubes (CNTs) embedded in elastic medium in thermal environment. Using the Timoshenko beam theory and nonlocal elasticity of Eringen, the influences of rotary inertia, transverse shear deformation and small scale effect are taken into account. To model the intera...

Highly efficient materials and structures are becoming increasingly common in military, aeronautical, aerospace, mechanical, civil engineering applications. Composite have been developed to address the need combine two or more achieve superior properties. Many structural elements, such as laminated beams, use composite materials, but an accurate mathematical model of bending behavior is require...

The paper deals with the mechanical behavior of a micro-beam bonded with two piezoelectric layers. The micro-beam is suspended over a fixed substrate and undergoes the both piezoelectric and electrostatic actuation. The piezoelectric layers are poled through the thickness and equipped with surface electrodes. The equation governing the micro-beam deflection under electrostatic pressure is deriv...

In this paper we show how recent theoretical developments have led to a more unified framework for understanding different branches of Evolutionary Computation (EC), as well as distinct theoretical formulations, such as the Schema theorem and the Vose model.In particular, we show how transformations of the configuration space of the model – such as coarse-grainings/projections, embeddings and c...

In this paper, free vibration analysis of a polymer-based nano-composite beam reinforced by boron-nitride nanotubes and subjected on elastic foundation, is studied. Smooth and defect-free nanotubes with uniform and directly- orientated in matrix are intended. Also, nanotubes’ distribution in the thickness direction of beam is regarded as a uniform distribution of the three different targeted on...

In this article, in reference to the modified couple stress theory and Euler-Bernoulli beam theory, the free lateral vibration response of a micro-beam carrying a moveable attached mass is investigated. This is a decent model for biological and biomedical applications beneficial to the early-stage diagnosis of diseases and malfunctions of human body organs and enzymes. The micro-cantilever beam...