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http://dx.doi.org/10.7734/COSEIK.2018.31.2.105

Peridynamic Modeling for Crack Propagation Analysis of Materials  

Chung, Won-Jun (Department of Naval Architecture and Ocean Engineering, Pusan National University)
Oterkus, Erkan (Department of Naval Architecture Ocean and Marine Engineering, University of Strathclyde)
Lee, Jae-Myung (Department of Naval Architecture and Ocean Engineering, Pusan National University)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.31, no.2, 2018 , pp. 105-114 More about this Journal
Abstract
In this paper, the computer simulations are carried out by using the peridynamic theory model with various conditions including quasi-static loads, dynamic loads and crack propagation, branching crack pattern and isotropic materials, orthotropic materials. Three examples, a plate with a hole under quasi-static loading, a plate with a pre-existing crack under dynamic loading and a lamina with a pre-existing crack under quasi-static loading are analyzed by computational simulations. In order to simulate the quasi-static load, an adaptive dynamic relaxation technique is used. In the orthotropic material analysis, a homogenization method is used considering the strain energy density ratio between the classical continuum mechanics and the peridynamic. As a result, crack propagation and branching cracks are observed successfully and the direction and initiation of the crack are also captured within the peridynamic modeling. In case of applying peridynamic used homogenization method to a relatively complicated orthotropic material, it is also verified by comparing with experimental results.
Keywords
peridynamic; fracture mechanics; non-local theory; homogenization;
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Times Cited By KSCI : 3  (Citation Analysis)
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