Journal
ENGINEERING FRACTURE MECHANICS
Volume 149, Issue -, Pages 37-44Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.engfracmech.2015.09.048
Keywords
Centrally cracked Brazilian disk; Confining pressure; Weight function; T-stress
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Funding
- National Natural Science Foundation of China [11172186, 11327801]
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An analytical formula for calculating the T-stress in a centrally cracked Brazilian disk under both diametric forces and confining pressure, is presented by using the weight function method. It is very accurate for a alpha <= 0.95 with 100 terms, and can be expediently used for arbitrary crack lengths and loading angles. In addition, the effect of confining pressure on the T-stress is also investigated, and it is shown that the T-stress increases with increase of confining pressure. There is a significant effect of confining pressure on the T-stress for a centrally cracked Brazilian disk with a large crack length and loading angle. (C) 2015 Elsevier Ltd. All rights reserved.
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