Journal article
Approximate methods for predicting J-integral of a circumferentially surface-cracked pipe subject to bending
International journal of fracture, Vol.85(2), pp.111-130
05/1997
DOI: 10.1023/A:1007322018722
Abstract
This study proposes two new methods to estimate the energy release rate of a circumferentially cracked pipe with an internal, constant-depth, finite-length surface flaw subjected to pure bending loads. The methods are based on the deformation theory of plasticity, constitutive law characterized by Ramberg-Osgood model, and an equivalence criterion incorporating reduced thickness analogy for simulating system compliance due to the presence of a crack. Closed-form solutions were developed in terms of elementary functions for an approximate evaluation of J-integral. They are general and can be applied in the complete range between elastic and fully plastic conditions. Several numerical examples are presented to illustrate the proposed methods. The comparisons with the results of elastic-plastic finite element analysis showed satisfactory prediction of J-integral by one of the proposed methods.
Details
- Title: Subtitle
- Approximate methods for predicting J-integral of a circumferentially surface-cracked pipe subject to bending
- Creators
- S Rahman - Department of Mechanical Engineering The University of Iowa Iowa City IA 52242F.W Brust - Engineering Mechanics Group, Battelle 505 King Avenue Columbus OH 43201
- Resource Type
- Journal article
- Publication Details
- International journal of fracture, Vol.85(2), pp.111-130
- Publisher
- Kluwer Academic Publishers; Dordrecht
- DOI
- 10.1023/A:1007322018722
- ISSN
- 0376-9429
- eISSN
- 1573-2673
- Language
- English
- Date published
- 05/1997
- Academic Unit
- Mechanical Engineering
- Record Identifier
- 9984064242902771
Metrics
20 Record Views