期刊
INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE
卷 80, 期 -, 页码 173-188出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijengsci.2014.02.017
关键词
Fracture; Isogeometric analysis; Strong discontinuity; Cohesive mechanics; Crack tracking
A variational model for the analysis of crack evolution is presented. The method considers strong discontinuities that evolve according to the principles of cohesive fracture mechanics. A novel isogeometric interpolation scheme is presented that, differently from previous proposals, inserts the fracture modifying the blending properties of the interpolation. A method for tracking the discontinuity is also proposed, based on a local distortion of the parametrization of the geometry obtained determining the position of the control points of the isogeometric interpolation as solution of a suitable minimization problem. (C) 2014 Published by Elsevier Ltd.
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