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Thickness effects of CCT specimens
Author(s) -
Miyamoto Hiroshi,
Machida Kenji,
Kikuchi Masanori
Publication year - 1986
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.1620220308
Subject(s) - j integral , displacement (psychology) , materials science , front (military) , finite element method , composite material , geometry , structural engineering , mathematics , fracture mechanics , geology , engineering , psychology , oceanography , psychotherapist
First, the three‐dimensional elasto‐plastic analyses of 1CT and 18 mm thick CCT specimens are carried out by using the finite element method, and the thickness effects of both specimens are studied. In elastic states, there is no significant difference between the CT and CCT specimen in the distribution of the J ‐integral along the straight or curved crack front. However, in elasto‐plastic states, quite the contrary tendency is obtained in the distributions of J x and COD along the curved crack front for both specimens. Secondly, elasto‐plastic analyses are carried out for CCT specimens of four kinds of thickness ( B = 200, 18, 6 and 4 mm). The distributions of the J ‐integral along the crack front are obtained and compared. Finally, the availability of the J R value is examined, which is evaluated from the load versus displacement curve by using Rice's formula.