Quasicontinuum Models for Interface Multiscale Model

Y. Hangai; Nobuhiro Yoshikawa

doi:10.4028/www.scientific.net/KEM.261-263.729

Paper Titles

2D Vector Cellular Automata Model for Simulating Fracture of Rock under Tensile Condition
p.705

Finite Element Analysis of Rubber Particles Size Distribution on Fracture Toughness of Rubber-Modified Polymer
p.711

3D Numerical Analysis for the Inelastic Deformation of Rubber Particle Modified Polymers
p.717

Numerical Modeling of the Constitutive Relationship of a Soft Rock Using a 3-D Elastic Visco-Plastic Model
p.723

Quasicontinuum Models for Interface Multiscale Model
p.729

Atomistic Simulations of Dislocation-Loop Glidings in Al(111) Nanoindentation
p.735

Dislocation Dynamics Simulation of Grain Boundary Effects on Yield Behavior of Metals
p.741

Effects of Meso-Scale Structure and Interactions on Macro-Scale Mechanical Properties in Polymeric Materials
p.747

Inverse Analysis Method for Photoelastic Measurement of 3D Stress State
p.753

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Quasicontinuum Models for Interface Multiscale Model

Abstract:

A strategy of coupling length scales from atomistic to continuum is investigated on the basis of quasicontinuum model for interface fracture problems. In the model, an atomistic region of the interest is discretized by finite elements and the positions of atoms are prescribed by means of nodal displacements of the elements with shape function for the reduction of the degrees of freedom. Total energy of the system consists of interatomic potentials, and minimized through variational method employed in conventional finite element formulation. In this study, we deal with the fracture behavior of Cu-Fe interface crack in two dimensional problems, and investigate the adequate discretization manner around the crack tip in use of quasicontinuum method.