This paper is concerned with the analysis of locking effects resulting from different orientations of micro‐defects and those of the corresponding macro‐defects. Based on a mixed‐mode material model embedded within the framework of the strong discontinuity approach (SDA), the described locking effect is illustrated by means of a crack analysis of a notched concrete beam. To overcome the deficiency of the proposed finite element model, the original SDA is modified and extended. For that purpose, two different advanced numerical formulations are developed: a rotating crack approach and a multiple crack approach. Restricting the governing equations to the material point level, a standard return‐mapping procedure is applied to the algorithmic formulations of both models. The applicability and the performance of the proposed numerical implementations are investigated by means of a re‐analysis of the two‐dimensional notched concrete beam. Copyright © 2005 John Wiley & Sons, Ltd.
International Journal for Numerical Methods in Engineering – Wiley
Published: Jul 7, 2005
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