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J1-Integral for non-J-controlled crack growth

โœ Scribed by Wang Bo; Hwang Keh-Chih

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
544 KB
Volume
47
Category
Article
ISSN
0013-7944

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โœฆ Synopsis

Abet-A

J,-integral is investigated for a material characterized by an incremental plasticity model under the non-J-controlled crack growth situation. The path independency of the integral, as well as its physical signiiicance. are examined for an extensively extended crack. It is concluded that the .&-integral can be a new fracture parameter in elastiqlastic fracture mechanics. Compact tension (CT) specimens are modelled by means of the elastic-plastic finite element method to simulate the stable growth of a crack and to evaluate the whole field solution fracture parameters. The computed results give the limit for J-controlled growth and show some good numerical characteristics of the Jr-integral during non-J-controlled growth.

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