A new computational mechanics model is proposed to describe the compression response of two-dimensional cellular materials with consideration of microstructural development. In this modeling, processing conditions to fabricate cellular materials are taken into account as a cell-growth mechanism. Representative volume elements (RVE) are generated by the phase-field model. Numerical simulations o...

A homogenization strategy for granular materials is presented and applied to a three-dimensional Discrete Element Method (DEM), that uses superellipsoids as particles. Macroscopic quantities are derived from the microscopic quantities resulting from a DEM simulation by averaging over representative volume elements (RVEs). The implementation of a RVE is described in detail regarding the definiti...

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...

This work presents a lattice-particle model for the analysis of steel fiber-reinforced concrete (SFRC). In this approach, fibers are explicitly modeled and connected to the concrete matrix lattice via interface elements. The interface behavior was calibrated by means of pullout tests and a range for the bond properties is proposed. The model was validated with analytical and experimental result...

This study focused on the contribution of micromechanical parameters on the macro-mechanical response of short fiber composites, namely polypropylene matrix reinforced by glass fibers. In the framework of this paper, an attention has been given to the glass fibers length, as micromechanical parameter influences the overall macroscopic material’s behavior. Three dimensional numerical models were...

The microstructure-based finite element modeling (MB-FEM) of material representative volume (RVE) is a widely used tool in the characterization and design various composites. However, MB-FEM has number deficiencies, e.g., time-consuming generation workable geometric model, challenge achieving high volume-fractions inclusions, poor quality mesh. In this paper, we first demonstrate that for parti...

The statistical significance of grain-scale lattice rotation results is analysed. case the Ref. [1] specifically considered. Quantitative elements theory statistics are applied to determine precisions (standard errors) and size representative volume element (RVE), in terms minimal number grains necessary obtain results. It shown that defined sufficient precision support conclusions made. In gen...

Computational methods can play a significant role in characterization of the carbon-based nanocomposites by providing simulation results. In this paper, we prepared a brief review of the mechanical properties of carbon nanotubes (CNTs), Graphene, and coiled carbon nanotube (CCNTs) reinforced nanocomposites. Varies simulation studies in mechanical properties of nanocomposites including represent...

Abstract In chemical mechanical polishing (CMP) for IC fabrication, porous pads are critical achieving extremely consistent throughput in CMP process. The pad hardness, porosity of pad, and pore sizes the thermoplastic polyurethanes foam fabrication procedure determine properties pads. This paper aims to develop a methodology modeling macro micro hardness. IC1000 has been analyzed with develope...