A multi-level computational model for multi-scale damage analysis in composite and porous materials

In this paper, an adaptive multi-level computational model is developed to comprehensively address issues of discretization and physically based modeling error in structures consisting of heterogeneous micro-structures. The model consists of three…

The series of free-edge boundary-value problems treated by Pagano and Rybicki (Pagano NJ, Rybicki EF. On the significance of effective modulus solutions for fibrous composite. J Comp Mat 1974;8: 214-28; Rybicki EF, Pagano NJ. A study of...

In this paper, a hierarchical multiple scale computational model is proposed to concurrently predict evolution of variables at the structural and microstructural scales, as well as to track the incidence and propagation of microstructural damage.…

A computational model of multi-scale population densities was developed based on the native population database of Shijiazhuang city. The model comprises four parts: data processing, down-scaling, data format conversion and up-scaling. Down-scaling…

This paper presents a statistical micromechanics-based multi-scale material modeling framework to predict the effective elastic moduli of porous materials. The present formulation differs from most of the existing theoretical models in that the…

To analyse the macroscopic and microscopic behaviours of heterogeneous materials and components, a multi-scale computational method is studied. Although asymptotic homogenization theory has been the main tool during the last decade to solve various…

An elastic-plastic constitutive model that incorporates the details of material microstructure, is proposed for modeling composite and porous materials. It is based on two-scale analysis using the asymptotic homogenization method and the Voronoi…

A procedure for estimating the applied traction required for forming processes of porous material is suggested. It carries the general structure of the upper-bound approach in the sense that static equilibrium is not enforced and a detailed…

Plastic flow in crystal at submicron-to-nanometer scales involves many new interesting problems. In this paper, a unified computational model which directly combines 3D discrete dislocation dynamics (DDD) and continuum mechanics is developed to…

A method for analysis of progressive failure in the Computational Structural Mechanics Testbed is presented in this report. The relationship employed in this analysis describes the matrix crack damage and fiber fracture via kinematics-based…