Evaluation of Nonlocal Approaches for Modelling Fracture Near Nonconvex Boundaries

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F14%3A00220032" target="_blank" >RIV/68407700:21110/14:00220032 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.ijsolstr.2014.05.023" target="_blank" >http://dx.doi.org/10.1016/j.ijsolstr.2014.05.023</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ijsolstr.2014.05.023" target="_blank" >10.1016/j.ijsolstr.2014.05.023</a>

Result language
angličtina
Original language name
Evaluation of Nonlocal Approaches for Modelling Fracture Near Nonconvex Boundaries
Original language description
Integral-type nonlocal damage models describe the fracture process zones by regular strain profiles insensitive to the size of finite elements, which is achieved by incorporating weighted spatial averages of certain state variables into the stress strainequations. However, there is no consensus yet how the influence of boundaries should be taken into account by the averaging procedures. In the present study, nonlocal damage models with different averaging procedures are applied to the modelling of fracture in specimens with various boundary types. Firstly, the nonlocal models are calibrated by fitting load displacement curves and dissipated energy profiles for direct tension to the results of mesoscale analyses performed using a discrete model. Theseanalyses are set up so that the results are independent of boundaries. Then, the models are applied to two-dimensional simulations of three-point bending tests with a sharp notch, a V-type notch, and a smooth boundary without a notch. The
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JJ - Other materials
OECD FORD branch
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Project
<a href="/en/project/GAP108%2F11%2F1243" target="_blank" >GAP108/11/1243: Large-Strain Anisotropic Model for Failure of Trabecular Bone</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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