Showing papers in "International Journal of Mechanical Sciences in 2014"

TL;DR: In this paper, the authors proposed a new metamaterial beam based on multi-frequency vibration absorbers for broadband vibration absorption, which consists of a uniform isotropic beam and small two-mass spring-mass-damper subsystems at many locations along the beam.

TL;DR: In this article, the authors used finite element modeling to predict the effect of variation in the struts diameter on the elastic modulus as well as collapse stress of cellular lattice structures.

TL;DR: In this paper, the authors present the design and modeling techniques and design guidelines of acoustic metamaterial plates for elastic wave absorption and structural vibration suppression, and reveal the actual working mechanism.

TL;DR: In this paper, a modified couple-stress theory is used to study the bending behavior of nano-sized plates, including surface energy and microstructure effects, and an intrinsic length scale parameter is determined as a result of taking surface energy effects into account.

TL;DR: In this article, a generalized thermo-viscoelasticity theory with memory-dependent derivatives is constructed, and the governing coupled equations with time-delay and kernel function, which can be chosen freely according to the necessity of applications, are applied to one-dimensional problem of a half-space.

TL;DR: In this paper, a finite element (FE) model for orthogonal machining of Inconel 718 alloy and prediction of the microstructure changes during the process is presented.

TL;DR: In this paper, a unified solution method for free vibration analysis of functionally graded cylindrical, conical shells and annular plates with general boundary conditions is presented by using the first-order shear deformation theory and Rayleigh-Ritz procedure.

TL;DR: In this article, a new microstructure-dependent sinusoidal beam model for buckling of microbeams using modified strain gradient theory is presented and the equilibrium equations and corresponding boundary conditions in buckling are derived with the minimum total potential energy principle.

TL;DR: In this article, the energy absorption characteristics of single and bitubal polygonal tubes with different cross-sectional configurations under different axial crushing load conditions were compared by using the complex proportional assessment (COPRAS) technique.

TL;DR: In this paper, the authors deal with the large amplitude vibration, nonlinear bending and thermal postbuckling of functionally graded material (FGM) beams resting on an elastic foundation in thermal environments.

TL;DR: In this paper, a quasi-zero-stiffness vibration isolator (QZS-VI) with a simple linear time-delayed active control strategy is investigated.

TL;DR: In this paper, the theoretical predictions of mean crushing force, mean horizontal force, and mean bending moment were proposed by dividing the profile into basic angle elements based on a simplified super folding element (SSFE) theory.

TL;DR: In this article, the authors identify the circumstances under which each mode will occur in terms of plastic flow and microstructural ductile damage by means of an analytical framework to characterize fracture loci under plane stress conditions that also takes anisotropy into consideration.

TL;DR: In this article, the authors present a review of the axially moving plate-like elastic and viscoelastic systems, with particular emphasis on the elastic and non-rigid systems.

TL;DR: In this article, the free vibration of non-uniform functionally graded beams is analyzed via the Timoshenko beam theory, where bending stiffness and distributed mass density are assumed to obey a unified exponential law.

TL;DR: Anisotropic hierarchical honeycombs of uniform wall-thickness are constructed by repeatedly replacing each three-edge vertex of a base hexagonal network with a similar but smaller hexagon of the same orientation, and stretching the resulting structure in horizontal or vertical directions to break the isotropy as mentioned in this paper.

TL;DR: In this paper, three finite element models are presented with a desire to take into account the physical phenomena, and the results of the simulations are compared with the different theories reported in the literature.

TL;DR: In this article, a new comprehensive Timoshenko beam element has been developed on the basis of the modified couple stress theory, and the shape functions of the new element are derived by solving the governing equations of modified couple-stress Timoshenko beams.

TL;DR: This study calculated three-dimensional incompressible laminar flow problems with simple pipe and bifurcation models and showed that FEM CFD codes (ADINA) were more influenced by the mesh type and quality compared to FVM CFD code (Ansys CFX, Fluent); the computation time was found to be significantly shorter for the FVM compared to the FEM.

TL;DR: In this paper, the authors proposed a new technique for solving free vibration problems of composite arbitrarily shaped membranes by using Generalized Differential Quadrature Finite Element Method (GDQFEM).

TL;DR: In this article, the authors investigated the crashworthiness of the FGF-filled square tubes under multiple load cases, and they found that the foam density varies along the axial direction and is controlled by the gradient exponent.

TL;DR: In this paper, an analytical failure criterion is proposed to characterise ship plated structures manufactured with aluminum or steel materials subjected to low impact velocities, and the criterion considers the critical deflection, force and absorbed energy of plates laterally impacted by a hemispherical indenter, and assumes that failure occurs at the presence of necking.

TL;DR: In this article, the effects of face-sheet arrangements and interfacial adhesion strength between different foam layers are quantified for all-metallic sandwich plates with functionally graded close-celled aluminum foam cores.

TL;DR: In this article, the authors have discussed the bifurcation behavior of moderately thick heated annular plates made of FGMs and developed an exact asymmetrical solution to calculate the critical buckling temperature difference of the plate for the above-mentioned cases of thermal loading.

TL;DR: In this paper, a numerical and an experimental study of the dynamic behavior of sandwich plates consisting of two aluminum skins and a magnetorheological elastomer core of different loads of micron-size ferromagnetic particles elaborated under the action of a magnetic field is presented.

TL;DR: In this article, a modified couple stress theory is used to capture the microstructure effects while surface effects are incorporated into the model based on the Gurtin and Murdoch surface elasticity model.

TL;DR: In this paper, different higher-order shear deformation beam theories (SDBTs) have been incorporated for the free vibration response of functionally graded (FG) beams subjected to different sets of boundary conditions.

TL;DR: In this article, the authors used a simple model of the isolator comprising a vertical spring coupled to two horizontal springs, which is configured to reduce the dynamic stiffness and hence increase the frequency range of isolation.

TL;DR: In this article, the problem of generalized thermoelasticity with one relaxation time for an infinite annular cylinder of temperature dependent physical properties is discussed, where both the inner and outer curved surfaces of the cylinder are considered stress free.