Journal
ENGINEERING FRACTURE MECHANICS
Volume 174, Issue -, Pages 2-9Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.engfracmech.2016.10.001
Keywords
Finite elements; Mixed modes; Coupled modes; Stress intensity factors; Corner point singularities
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The linear elastic analysis of homogeneous, isotropic cracked bodies started in the 1900s. The existence of three dimensional corner point effects in the vicinity of a corner point where a crack front intersects a free surface was investigated in the late 1970s. An approximate solution by Bazant and Estenssoro explained some features of corner point effects but there were various paradoxes and inconsistencies. Results derived from finite element models showed that the analysis is incomplete. The stress field in the vicinity of a corner point appears to be the sum of two singularities. (C) 2016 Elsevier Ltd. All rights reserved.
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