Showing papers in "International Journal of Engineering Science in 2014"

TL;DR: In this article, the effects of the gradient index, length scale parameter and length-to-thickness ratio on the vibration of functionally graded material (FGM) nanobeams were examined.

TL;DR: In this article, the buckling analysis of embedded functionally graded (FG) microbeams is performed based on sinusoidal shear deformation beam and modified couple stress theories.

TL;DR: In this article, the authors focus on the design of wave-guides aimed to control wave propagation in micro-structured continua, with particular attention to piezoelectromechanical structures, having a strong coupling between macroscopic motion and some internal degrees of freedom.

TL;DR: In this article, a memory-dependent derivative (MDD) was introduced into the Lord and Shulman (LS) generalized thermoelasticity, which might be superior to fractional ones.

TL;DR: In this article, the cylindrical thin-shell model is developed based on modified strain gradient theory, having considered size effects through modified strain gradients theory, and partial equations of shell motion with classical and non-classical corresponding boundary conditions are derived from Hamilton principle.

TL;DR: In this paper, the buckling analysis of three microbeam models based on modified couple stress theory is investigated, and a generalized differential quadrature (GDQ) method is employed to solve the governing differential equations.

TL;DR: In this paper, a variational model for the analysis of crack evolution is presented, which considers strong discontinuities that evolve according to the principles of cohesive fracture mechanics, and a method for tracking the discontinuity is also proposed, based on a local distortion of the parametrization of the geometry obtained determining the position of the control points of the isogeometric interpolation.

TL;DR: In this paper, an ocean wave energy harvester from the transverse wave motion of water particles is developed by the piezoelectric effects, which is made of two horizontal cantilever plates attached by PAs and fixed on a vertical rectangular column.

TL;DR: In this paper, the boundary conditions at the moving front of a hydraulic fracture when the fluid front has coalesced with the crack edge are analyzed. But the velocity of the coalesced front does not appear explicitly in the boundary condition.

TL;DR: In this article, the governing equations of the Euler-Bernoulli and Timoshenko beams are derived using the principle of virtual displacements, wherein the Eringen nonlocal differential model and modified von Karman nonlinear strains are taken into account.

TL;DR: In this article, a three-dimensional visco-hyperelastic constitutive model is developed to describe the rate-dependent behavior of rubber-like materials at large deformations.

TL;DR: In this article, a nonlinear theoretical model for three-dimensional vibration analysis of curved microtubes conveying fluid with clamped-clamped ends is developed and analyzed based on a modified couple stress theory and the Hamilton's principle.

TL;DR: In this paper, the authors proposed a new numerical scheme for solving a conservative Allen-Cahn equation with a space-time dependent Lagrange multiplier, which preserves the volume of the system and proposes a practically unconditionally stable hybrid scheme.

TL;DR: In this article, an elasto-plastic incremental constitutive model for frozen loess is derived from the two thermodynamic functions and a method of determining the corresponding parameters is also given.

TL;DR: In this article, a nonlocal higher-order plate theory for stability analysis of nanoplates subjected to biaxial in plane loadings is presented, where governing equations and corresponding boundary conditions are derived by using the principle of minimum potential energy.

TL;DR: In this paper, the buckling analysis of composite laminated beams is developed based on modified couple stress theory, which is applied principle of minimum potential energy and considering two different beam theories, governing equations, boundary and initial conditions are derived for micro composite laminate beams.

TL;DR: In this paper, an exact closed-form analytical solution for elasto-plastic deformations and stresses in a rotating disk made of functionally graded materials (FGMs) is presented.

TL;DR: In this paper, the axisymmetric postbuckling of functionally graded material (FGM) annular microplates based on the modified couple stress theory, Mindlin plate theory and von Karman geometric nonlinearity was investigated.

TL;DR: It is suggested that aneurysms can be interpreted as Mechanobiological instabilities and that predictions of their rupture risk should not only consider the maximal diameter or wall stress, but also the mechanobiological stability.

TL;DR: In this article, the authors developed a thin conical shell model by using the modified couple stress theory, and the equations of motion with partial differentials and classical and non-classical boundary conditions are derived by using Hamilton's principle.

TL;DR: In this article, an approach based on the description of the microstructure of the voids using fractal geometry was used for the calculation of the permeability of porous materials.

TL;DR: In this paper, a derivation of the nonlinear equation of motion is presented based on Hamilton's principle and a modified couple stress theory, which captures the micro-structure dependent size effects when the microtubes are at micron and submicron scales.

TL;DR: In this paper, a novel method is proposed for prediction of the chaos in the micro- and nano-electro-mechanical resonators based on the proposed method, first an accurate analytical solution for the dynamics behavior of the nano-resonators is derived using the multiple scales method up to the second order.

TL;DR: In this paper, the theory of nonlinear electroelasticity is used to examine diffuse modes of instability for two problems involving a thin dielectric plate subject to large deformations.

TL;DR: In this paper, a modified continuum model is developed to predict the postbuckling deflection of nanobeams incorporating the effect of surface stress and the geometrical nonlinearity is considered in the analysis using the von Karman assumption.

TL;DR: In this paper, a methodology to account for the interface effect on the viscoelastic behavior of asphalt-based multi-phase particle-reinforced composites is presented, and the micromechanical creep model is developed based on the Mori-Tanaka method, and further solved analytically by incorporating the elastic-visco-elastic correspondence principle.

TL;DR: In this paper, the optimality of the orthogonal factor in the polar decomposition in an euclidean distance framework was studied and generalizations of this optimality property in a geodesic distance framework were obtained.

TL;DR: In this paper, a two-degrees-of-freedom, non-linear model aiming to describe internal friction phenomena which have been observed in some modified concrete specimens undergoing slow dynamic compression loads and having various amplitudes but never inducing large strains was proposed.

TL;DR: In this article, a nonlinear dynamical response of a vertical riser concurrently subjected to hybrid excitations, namely, vortex-induced vibrations (VIVs) and base excitations are investigated.

TL;DR: In this paper, a finite strain theory for anisotropic single crystals undergoing shock loading is developed for the thermo-elastic regime, at axial stresses up to the Hugoniot elastic limit.