We present a multiscale method for the simulation of large viscoelastic deformations and show its applicability to biological tissue such as plant tissue. At the microscopic level we use a particle method to model the geometrical structure and basic properties of individual cells. The cell fluid, modeled as a viscoelastic fluid by means of Smoothed Particle Hydrodynamics (SPH) is enclosed in an...

A synergistic stiffening effect observed in the elastic mechanical properties of LBL assembled polymer/ clay nanocomposites is studied via two continuum mechanics approaches. The nanostructure of the representative volume element (RVE) includes an effective interphase layer that is assumed to be perfectly bonded to the particle and matrix phases. An inverse method to determine the effective thi...

Abstract Dual-phase steels (DP steels) consist of ferrite and hard martensitic phase. For the high strength good formability, they are widely used in automotive applications. Compared with DP lower strength, DP1180 is more special for volume fraction martensite higher than that ferrite. In this paper, evolving plastic yielding behaviours insight into their microscale mechanisms were studied by ...

In this paper, free vibration, modal and stress state analyses of honeycomb sandwich structures with different boundary conditions was investigated major factors affecting the frequencies stiffness due to material or parameter changes were determined. The representative volume element (RVE) method used in work analytically numerically validated by comparing obtained results those available lite...

The fatigue properties of the Q450NQR1 steel were experimentally and computationally investigated. experimental results show a large scatter lifetime under high cycle loading. Based on Voronoi diagram crystal plastic model, polycrystalline representative volume element (RVE) model with pore or inclusion was constructed to analyze effect local stress–strain (HCF) very-high-cycle (VHCF) life. Com...

Abstract It is well established that large temperature gradients cause strong textures in as-built metal parts manufactured via laser beam powder bed fusion. Columnar grains with a preferred crystallographic orientation dominate the microstructure of such materials resulting pronounced anisotropic mechanical behavior. Such are often studied help tensile tests and corresponding numerical simulat...

Ductile fracture is the macroscopic result of a micromechanical process consisting in void nucleation and growth to coalescence. While growing in size, voids also evolve in shape because of the non-uniform deformation field in the surrounding material; this shape evolution is either disregarded or approximately accounted for by constitutive laws for porous-plastic solids. To assess the effect o...

The representative element volume (REV) of the fractured rock mass is basis for its homogenization, and essential study groundwater seepage. In order to determine a simple method estimating REV, we studied topological characteristics network. We propose concept (TREV) mass. structure can reflect many properties mass, which great deal attention has been paid. examine applicability eleven paramet...

Islands-Matrix-Dual-phase (I-M-DP) steel is received a great deal attention for better concern with the emissivity, fuel consumption and passengers safety. A number of deformation plasticity issues are yet to be fully understood. Complex stages various stain predicted as natural outfall plastic strain localization caused by ill-assorted between martensite-island phase ferritic-matrix phase. Mod...