Magnetostrictive Fe1 xGax alloys, as a new class of smart materials, have great potential in sensing and actuator applications. However, the fundamental understanding of the anisotropic elastic responses at high Ga concentration remains one of the most challenging problems for the binary alloys. Here, we apply the density functional theory and large-scale ab initio molecular dynamics simulation...

In this paper, we present the first realization of an elastic metamaterial allowing independent tuning of negative density and stiffness for elastic waves propagating along a designated direction. In electromagnetic (or acoustic) metamaterials, it is now possible to tune permittivity (bulk modulus) and permeability (density) independently. Apparently, the tuning methods seem to be directly appl...

in this paper, a rectangular sandwich plate with a constrained layer and an electrorheological (er) fluid core is investigated. the rectangular plate is covered an er fluid core and a constraining layer to improve the stability of the system. the two outer layers of the sandwich structure are elastic. the viscoelastic materials express the middle layer behavior under electric field and small st...

This paper is concerned with the surface and small scale effects on transverse vibration of a viscoelastic single-layered graphene sheet (SLGS) subjected to an in-plane magnetic field. The SLGS is surrounded by an elastic medium which is simulated as Visco-Pasternak foundation. In order to investigate the small scale effects, the nonlocal elasticity theory is employed due to its simplicity and ...

Graphyne is a two-dimensional carbon allotrope of graphene. Its structure composed aromatic rings and/or carbon-carbon bonds connected by one or more acetylene chains. As some graphynes present the most excellent properties graphene and non-null bandgap, they have been extensively studied. Recently, Kanegae Fonseca reported calculations four elastic 70 graphynes, ten members seven families [Car...

When a thin binary layer grows epitaxially on an elemental substrate, the composition often modulates in the plane of the layer. The layer may even demix when the bulk of the same composition is miscible. Sometimes the layer separates into two phases, forming periodic stripes or other regular patterns. The size of the separated phases may be in the range 1±100 nm, and stable against coarsening ...

in this paper, vacuum assisted resin transfer molding (vartm) method was simulated by analytical solution. then the effect of parameters like fiber density, distribution of layer thickness, perform layer thickness, resin viscosity was investigated theoretically. obtained results show that by selecting optimum distribution layer thickness, increasing fiber volume fraction, reducing viscosity of ...

Sparse representation (SR)-driven classifiers have been widely adopted for hyperspectral image (HSI) classification, and many algorithms have been presented recently. However, most of the existing methods exploit the single layer hard assignment based on class-wise reconstruction errors on the subspace assumption; moreover, the single-layer SR is biased and less stable due to the high coherence...