The aim of this work is to determine an effective yield criteria for porous pressure sensitive solids by employing a virtual testing strategy. focus on the sensitivity typically displayed geomaterials, such as sandstone. Virtual strategy based computational homogenisation approach following unified variational formulation, which provides bounds material properties given choice Representative Vo...

Abstract A modular pipeline for improving the constitutive modelling of composite materials is proposed.The method leveraged here development subject-specific spatially-varying brain white matter mechanical properties. For this application, microstructural information extracted from diffusion magnetic resonance imaging (dMRI) scans, and used to generate hundreds representative volume elements (...

In this paper, a void closure model applicable to the general hot forming process has been proposed. Through representative volume element (RVE) method, influences of shape, orientation, and stress state on tendency were analysed. The was established so that it could consider these cross effects. calculates changing radius orientation during deformation by considering rate change parameters aff...

As a naturally polycrystalline material, Yellow River ice exhibits complex mechanical properties that are closely related to its internal microstructure. To study the micromechanical of this ice, geometrically representative volume element (RVE) and method for determining it proposed. By observing quantifying trends in microstructural characteristics granular micro-numerical model is establishe...

A computationally efficient method for generating virtual periodic representative volume element (RVE), capable of handling arbitrary inclusion shapes, is developed. universal collision/overlap detection and repair proposed, where each shape represented as a union n-Spheres (UnS). constrained optimization problem formulated solved to remove overlaps; closed-form solution derived calculating the...

Carbon nanotube (CNT) is considered as a new generation of material possessing superior mechanical, thermal and electrical properties. The applications of CNT, especially in composite materials, i.e. carbon nanotube reinforced polymer have received great attention and interest in recent years. To characterize the influence of CNT on the stress intensity factor of nanocomposites, three fracture ...

Deformation mechanisms and failure of textile laminates are strongly affected by inter-layer configurations – a mutual shift of the plies. To model it within a traditional framework, one must construct a representative volume element (RVE), which includes all the plies. This is a time consuming and computationally expensive work. As an alternative, the paper suggests boundary conditions (BC) im...

A variationally consistent model-based computational homogenization approach for transient chemomechanically coupled problems is developed based on the classical assumption of first-order prolongation displacement, chemical potential, and (ion) concentration fields within a representative volume element (RVE). The presence potential as primary global represents mixed formulation, which has defi...

1. Abstract The integrated lightweight design optimization of structural layout and material microstructures are discussed in this paper. By analyzing the basic features of such a two-scale problem, it is found that the optimal solution strongly depends upon the scale of the material unit cell (UC) or named representative volume element (RVE). In fact, the effective material properties predicte...