期刊
INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING
卷 83, 期 8-9, 页码 1155-1179出版社
WILEY
DOI: 10.1002/nme.2854
关键词
computational homogenization; multiscale; fracture; finite elements; partition of unity method
资金
- European Community [213371]
A computational multiscale framework is proposed that incorporates microstructural behaviour in a macroscale discrete fracture model. Homogenization procedures are derived for both adhesive and cohesive failure on the macroscale and are implemented in an FE2-setting. The most important feature of the homogenization procedure is that it implicitly defines a traction-opening relation for the macroscale fracture model. The representativeness of the micro models is studied using a one-dimensional example, which shows that in the softening regime the proposed multiscale scheme behaves different from a bulk homogenization scheme. These results are also observed in a numerical simulation for a micro model with a periodic microstructure. Numerical simulations further demonstrate the applicability of the method. Copyright (C) 2010 John Wiley & Sons, Ltd.
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