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has been cited by the following article:

• TITLE: Selective Activation of Intrinsic Cohesive Elements

  AUTHORS: Kyeongsik Woo, William M. Peterson, Douglas S. Cairns

  KEYWORDS: Intrinsic CZM, Arbitrary Crack Propagation, Added Compliance, Selective Activation, Multi-Point Constraint

  JOURNAL NAME: Journal of Applied Mathematics and Physics, Vol.2 No.12, November 25, 2014

  ABSTRACT: In this paper, a selective activation strategy is studied in order to alleviate the issue of added compliance in the intrinsic cohesive zone model applied to arbitrary crack propagation. This strategy proceeds by first inserting cohesive elements between bulk elements and subsequently tying the duplicated nodes across the interface using controllable multi-point constraints before the analysis begins. Then, during the analysis, a part of the multi-point constraints are selectively released, thereby reactivating the corresponding cohesive elements and allowing cracks to initiate and propagate along the bulk element boundaries. The strategy is implemented in Abaqus/Standard using a user-defined multi-point constraint subroutine. Analysis results indicate that the strategy significantly alleviates the added compliance problem and reduces the computation time.