eprintid: 2649
rev_number: 6
eprint_status: archive
userid: 71
dir: disk0/00/00/26/49
datestamp: 2015-03-27 10:51:27
lastmod: 2015-03-27 12:54:14
status_changed: 2015-03-27 10:51:27
type: article
metadata_visibility: show
creators_name: Budarapu, Pattabhi R.
creators_name: Gracie, Robert
creators_name: Yang, Shih-Wei
creators_name: Zhuang, Xiaoying
creators_name: Rabczuk, Timon
creators_id: pattabhi.budarapu@imtlucca.it
creators_id: 
creators_id: 
creators_id: 
creators_id: 
title: Efficient coarse graining in multiscale modeling of fracture 
ispublished: pub
subjects: TA
divisions: CSA
full_text_status: none
keywords: Coarse graining; MD simulation; Multiscale method; Fracture;  Atomistic model
abstract: Abstract We propose a coarse-graining technique to reduce a given atomistic model into an equivalent coarse grained continuum model. The developed technique is tailored for problems involving complex crack patterns in 2D and 3D including crack branching and coalescence. Atoms on the crack surface are separated from the atoms not on the crack surface by employing the centro symmetry parameter. A rectangular grid is superimposed on the atomistic model. Atoms on the crack surface in each cell are used to estimate the equivalent coarse-scale crack surface of that particular cell. The crack path in the coarse model is produced by joining the approximated crack paths in each cell. The developed technique serves as a sound basis to study the crack propagation in multiscale methods for fracture. 
date: 2014-02
publication: Theoretical and Applied Fracture Mechanics 
volume: 69
publisher: Elsevier
pagerange: 126 - 143
refereed: TRUE
issn: 0167-8442
official_url: http://www.sciencedirect.com/science/article/pii/S0167844213000839
citation:   Budarapu, Pattabhi R. and Gracie, Robert and Yang, Shih-Wei and Zhuang, Xiaoying and Rabczuk, Timon  Efficient coarse graining in multiscale modeling of fracture.  Theoretical and Applied Fracture Mechanics , 69.  126 - 143.  ISSN 0167-8442      (2014)