期刊
ENGINEERING FRACTURE MECHANICS
卷 76, 期 2, 页码 236-249出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.engfracmech.2008.10.001
关键词
Notched components; Mixed mode loading; Rupture; Cohesive crack; Notch radius
类别
资金
- Spanish Ministerio de Ciencia y Tecnologia [MAT2000-1355, MAT2001-3863-C03-01, ENE2005-06478]
- Regional Government of Madrid, Spain [S-0505/MAT-0155]
- SEDUREC
The first part of the paper gives an account of 153 fracture tests on blunted notched specimens (with notches of root radius ranging from 0.3 to 4.0 mm), loaded under mixed mode (ranging from almost pure mode I to mode II, and beyond). Maximum loads and initial crack angles were measured as a function of notch root radius and loading mixity. Such results can help in evaluating numerical models of the fracture of notched components. The second part of the paper deals with the suitability of the cohesive crack concept for predicting fracture loads under mixed mode. Use of local mode I was considered for numerical computations. Comparison of experimental results with numerical predictions was significantly accurate. Diagrams of fracture loci for notched components loaded under mixed mode are discussed. (C) 2008 Elsevier Ltd. All rights reserved.
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