Showing papers in "International Journal of Mechanical Sciences in 2015"

TL;DR: In this paper, an inerter-based dynamic vibration absorber (IDVAs) was proposed to improve the performance of the H∞ and H2 optimization problem.

TL;DR: In this article, a new size-dependent beam model is introduced on the basis of hyperbolic shear deformation beam and modified strain gradient theory, and the governing differential equations and corresponding boundary conditions are obtained with the aid of minimum total potential energy principle.

TL;DR: In this paper, a functionally graded thickness (FGT) was introduced to multi-cell tubes under dynamic impact, which can be fabricated by an extrusion process and a numerical model was established using the nonlinear finite element analysis code LS-DYNA and validated with experimental data.

TL;DR: In this paper, an extended bond-based peridynamic (PD) approach is presented for quasi-static mechanical behavior and brittle failure analysis of materials and structures, where a local artificial damping is introduced into the peridynamics equations of motion, and a step-by-step loading method and a non-equilibrium criterion are employed to calculate the elastic response quantitatively, simulate the crack initiation and propagation and predict the extreme failure load of structures.

TL;DR: In this article, a geometrically imperfect microplate is modelled by means of the von Karman plate theory and Kirchhoff's hypotheses retaining all in-plane and out-of-plane displacements and inertia.

TL;DR: In this paper, the free vibration of functionally graded carbon nanotube (FG-CNT) reinforced composite moderately thick rectangular plates with edges elastically restrained against transverse displacements and rotation of the plate cross section is considered.

TL;DR: In this paper, an acoustic multi-stopband metamaterial plate is designed by integrating two-degree of freedom (DOF) mass-spring subsystems with an isotropic plate to act as vibration absorbers.

TL;DR: In this article, the authors investigate complex drill string dynamics on a novel experimental rig, capable of reproducing all major types of drill string vibrations, such as stick-slip oscillations, whirling, drill-bit bounce and helical buckling of the drill string.

TL;DR: In this article, the authors investigate the energy absorption characteristics of tapered circular tubes with graded thickness (TCTGT) under axial loading and propose an approach to predict the mean crushing force of circular and tapered tubes with and without forming effects.

TL;DR: In this paper, an analysis of active damping of geometrically nonlinear vibrations of functionally graded magneto-electro-elastic (FGMEE) plates integrated with the patches of the active constrained layer damping (ACLD) treatment is presented.

TL;DR: In this paper, a Miura-ori patterned sheet was made from copolymer Elvaloy by compression molding, and then its deformation behavior was investigated experimentally and by using finite element analysis.

TL;DR: In this paper, the authors investigated the effect of the additional degrees of freedom on the loading optimisation strategy of a vibro-impact drilling system, and the results of the numerical analysis and comparison between two selected models are presented.

TL;DR: In this article, the effect of temperature on the springback process of AA5754-O aluminium alloy blanks was investigated both experimentally using specially designed equipment and numerically using a fully coupled thermo-mechanical finite element model.

TL;DR: In this article, a coupled beam system is base excited and the influence of different system parameters are studied, such as contact stiffness, damping and clearance between the beams, and the power generated by the coupled system from the non-linear impact is sensitive to the thickness ratio of the beams and the clearance.

TL;DR: In this article, a novel and effective formulation that combines the eXtended IsoGeometric Approach (XIGA) and higher-order shear deformation theory (HSDT) is proposed to study the free vibration of cracked functionally graded material (FGM) plates.

TL;DR: In this article, an element-free kp-Ritz method based on first order shear deformation theory (FSDT) was used to study the elastodynamic problem of carbon nanotube-reinforced functionally graded (CNTR-FG) plates.

TL;DR: In this article, a two-temperature model for convective heat transfer in a differentially heated square porous cavity filled with a nanofluid and the Tiwari and Das model has been studied numerically.

TL;DR: In this paper, the problem of stability in the milling process of titanium super-alloy Ti6242 was discussed and a stability lob diagram was created based on parameters determined in impact testing of an end mill and the cutting forces were measured in an experiment where the axial cutting depth being gradually increased.

TL;DR: In this article, it is shown that the traditional Bodewadt boundary layer is greatly altered under the influence of radial stretching of the wall, and the thickness of the thermal boundary layer also decreases even for moderate strength of stretching.

TL;DR: In this paper, a hybrid lever-type isolation system with an X-shape supporting structure in passive or semi-active control manners is presented. But, it is shown that the system has inherent nonlinear stiffness and damping properties due to structure geometrical nonlinearity.

TL;DR: In this paper, a thickness reduction rolling process was used to introduce residual stresses into a dual phase, DP780, steel strip and the initial and thickness reduced strips were then used in a 5-stand experimental V-section roll forming setup to identify the effect of residual stress on the final shape.

TL;DR: In this paper, the nonlinear vibration of a nanobeam (NB) coupled with a piezoelectric (PNB) was investigated based on the strain gradient theory.

TL;DR: In this paper, a modified couple stress theory was proposed to account for both shear and normal deformation effects by a parabolic variation of all displacements across the thickness, and satisfies the zero traction boundary conditions on the top and bottom surfaces of the micro-plate.

TL;DR: In this article, a range of kirigami-inspired folded core structures for use in sandwich panels were investigated. But the core performance was not evaluated under quasi-static loading with experimental and numerical analyses.

TL;DR: In this paper, the energy absorption characteristics of a type of conical tubes with graded thickness (CTGT) under oblique impact loads were investigated numerically by using finite element model validated by experiments.

TL;DR: In this paper, the effects of surface energy on the pull-in instability and free vibration of electrostatically actuated micro/nanoscale plates are analyzed based on the modified couple stress theory.

TL;DR: In this article, a cutting force prediction algorithm considering the influence of cutter vibrations and cutter run-out is proposed, which produces better conformity with actual machining forces, but the accuracy of the algorithm is determined by how these factors are integrated into the cutting force model.

TL;DR: In this article, the impact response of simply-supported and clamped sandwich beams with corrugated and Y-frame cores was measured in a drop-weight apparatus at 5m −1.

TL;DR: In this paper, the potential beneficial performance of a multi-direction Quasi-Zero-Stiffness vibration isolator (MDQZS-VI) with linear time-delayed active control is investigated.

TL;DR: In this article, the nonlocal Kirchhoff-love plate theory is adopted to describe the mechanical behavior of a single-layered graphene sheet as an orthotropic nanoplate, where the influence of Lorentz magnetic force is introduced through classical Maxwell's equations.