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Coupled Systems Mechanics Volume 8, Number 2, April 2019 , pages 111-127 DOI: https://doi.org/10.12989/csm.2019.8.2.111 |
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ED-FEM multi-scale computation procedure for localized failure |
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Ivan Rukavina, Adnan Ibrahimbegovic, Xuan Nam Do and Damijan Markovic
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| Abstract | ||
| In this paper, we present a 2D multi-scale coupling computation procedure for localized failure. When modeling the behavior of a structure by a multi-scale method, the macro-scale is used to describe the homogenized response of the structure, and the micro-scale to describe the details of the behavior on the smaller scale of the material where some inelastic mechanisms, like damage or plasticity, can be defined. The micro-scale mesh is defined for each multi-scale element in a way to fit entirely inside it. The two scales are coupled by imposing the constraint on the displacement field over their interface. An embedded discontinuity is implemented in the macro-scale element to capture the softening behavior happening on the micro-scale. The computation is performed using the operator split solution procedure on both scales. | ||
| Key Words | ||
| multi-scale modeling; strong coupling; embedded discontinuity; operator split | ||
| Address | ||
| Ivan Rukavina, Adnan Ibrahimbegovic and Xuan Nam Do: 1Universitee de Technologie de Compieegne / Sorbonne Universites, Laboratoire Roberval, Centre de Recherche Royallieu, 60 203 Compieegne, France Damijan Markovic: 2EDF, DIPNN / Direction Technique, 19, rue Pierre Bourdeix, Lyon, France | ||
