Showing papers in "Acta Mechanica Solida Sinica in 2017"

TL;DR: In this article, the nonlinear vibrations of viscoelastic Euler-Bernoulli nanobeams were studied using the fractional calculus and the Gurtin-Murdoch theory.

TL;DR: In this article, a nonlocal Euler-Bernoulli beam model is used to model the transverse vibration of a single-walled nanotube (SWCNT) in thermal environment.

TL;DR: In this article, the authors investigated a highly efficient and promising control method for forced vibration control of an axially moving beam with an attached nonlinear energy sink (NES) and found that the NES has little effect on the natural frequency of the beam.

TL;DR: In this article, the wave propagation behavior of rotating functionally graded (FG) temperature-dependent nanoscale beams subjected to thermal loading based on nonlocal strain gradient stress field was investigated.

TL;DR: In this paper, the impact behavior of carbon-fiber-wrapped composite cylinders subjected to impact from flat-ended, hemispherical-nosed and conical nosed impactors was analyzed.

TL;DR: In this paper, Gurtin-Murdoch elasticity theory is implemented into the first-order shear deformation shell theory to develop a size-dependent shell model which has an excellent capability to take surface free energy effects into account.

TL;DR: In this article, a meshless radial basis function (RBF) collocation method based on the Eringen nonlocal elasticity theory is developed to calculate the band structures of ternary and quaternary nanoscale multi-layered phononic crystals (PNCs) with functionally graded (FG) interlayers.

TL;DR: In this paper, the interlayer sliding between graphene and boron nitride (h-BN) is studied by molecular dynamics simulations, and it is found that interlayer shear force between h-BN/h-BP is six times higher than that of graphene/graphene, while the inter layer shear between graphene/hBP is approximate to that of graphene.

TL;DR: In this paper, a modified couple stress theory based composite laminated skew Mindlin plate model is proposed, which can capture the scale effects of microstructures, and it is shown that the normalized center deflections obtained by this model are always smaller than those obtained by the classical one.

TL;DR: In this paper, a 74mm-diameter Split Hopkinson pressure bar was used to carry out the dynamic compression experiment of concrete made of desert sand, and the dynamic failure processes of concrete different in specimen size, impact velocity, desert sand replacement ratio, size and volume content of coarse aggregate were simulated.

TL;DR: In this paper, a detailed theoretical study of the three dimensional modal analysis of compressible fluid within an elastic cylinder is presented, where the dispersion equations of flexural, torsional and longitudinal modes are derived by elastodynamic theory and the unsteady Stokes equation.

TL;DR: In this paper, the critical bowing stress of moving matrix dislocations in the Ni-based single crystal super-alloys was investigated via atomic modeling, with a special focus on the factors influencing the moving matrix dislocation in the matrix channel.

TL;DR: Based on Lamb wave analysis of propagation in plate-like structures, a damage detection method is proposed that not only locates the position of the damage accurately but also estimates its size as discussed by the authors.

TL;DR: In this article, a series of horizontal springs is diverted to the face between the bottom of the beam and the foundation to address the limitation of the Pasternak model, which tends to disregard the tangential interaction between the beam between the foundation and the ground.

TL;DR: In this article, the temperature effect on the nonlinear vibration behavior of nanoplate-based nano electromechanical systems (NEMS) subjected to hydrostatic and electrostatic actuations is investigated.

TL;DR: In this paper, a nonlocal Euler beam model with second-order gradient of stress is used to study the thermal vibration of nanobeams with elastic boundary and an analytical solution is proposed to investigate the free vibration of nonlocal euler beams subjected to axial thermal stress.

TL;DR: In this paper, the elastic electrode model for piezoelectric layered structure of a film bulk acoustic resonator (FBAR) was proposed and the results of dispersion relation were calculated using the proposed elastic model for both electroded and unelectroded layered plates.

TL;DR: A coarse-grained molecular dynamics model is developed to study the diffusion of NPs in modeled mucus layer and finds rodlike NPs can gain a higher diffusivity than spherical NPs with the same hydrodynamic diameter.

TL;DR: In this paper, the nonlinear free vibration around the postbuckling configuration of nonlocal nanobeams with pinned-pinned boundary conditions is analyzed, considering the geometric nonlinearity arising from the midplane stretching and particularly the effect of a longitudinal magnetic field.

TL;DR: Using the proposed approach, it is easy to find the most probable failure point and to acquire the reliability index through simple comparison directly and to avoid only searching the local optimal solution which would result in missed probable failure points.

TL;DR: In this article, a new finite strain elastoplasticity model is proposed from a fresh standpoint to achieve a comprehensive representation of thermomechanical behavior of metals and alloys over the whole deformation range up to failure, where both the yield condition and loading-unloading conditions need not be introduced as extrinsic coercive conditions but are automatically incorporated as inherent constitutive features into the models.

TL;DR: In this paper, the non-uniform rational B-spline (NURBS) enhanced scaled boundary finite element method in combination with the modified precise integration method is proposed for the transient heat conduction problems.

TL;DR: In this article, the frequency-dependent random fatigue of panel-type structures made of ceramic matrix composites (CMCs) under acoustic loadings is evaluated and the frequency effect through S-N curves on random fatigue damage is numerically verified.

TL;DR: In this article, a multi-field implicit finite element method for analyzing the electromechanical behavior of dielectric elastomers is proposed, which is based on a four-field variational principle, which includes displacement and electric potential for the electromagnetic coupling analysis, and additional independent fields to address the incompressible constraint of the hyperelastic material.

TL;DR: In this article, the authors used atomistic modeling and molecular dynamics simulation to build a nanosized ice-cube adhering onto silicon surface, with different contact modes of solid-solid and solid-liquid-solid patterns.

TL;DR: In this paper, the influence of initial porosity, stress triaxiality and Lode parameter on plastic deformation and ductile fracture in aluminum die casting components is investigated. But the effect of porosity is not investigated in this paper.

TL;DR: In this article, an adaptive cell-based domain integration method (CDIM) is proposed for the treatment of domain integrals in 3D boundary element method (BEM), where the cells are created from the boundary elements based on an adaptive oct-tree structure.

TL;DR: In this article, a coarse-grained model of long-chain polylactic acid (PLA) was built, and molecular dynamics simulations of the model were performed using a MARTINI force field.

TL;DR: In this article, first-principles calculations are performed to study the atomic structure, charge transfer and sliding strength of the interface between lithiated silicon and graphene, showing that Li atoms segregate at the Si-graphene interface preferentially, donating electrons to graphene and enhancing the interfacial sliding resistance.

TL;DR: In this paper, a model has been proposed for adhesive contact with local sliding under tangential forces, where the onset of local sliding in adhesive contact has been addressed by assuming the nucleation of dislocations.