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Limit loads and fracture mechanics parameters for thick-walled pipes
- Authors
- Kim, Nak-Hyun; Oh, Chang-Sik; Kim, Yun-Jae; Kim, Jong-Sung; Jerng, Dong Wook; Budden, Peter J.
- Issue Date
- 10월-2011
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Crack opening displacement; J-integral estimates; Limit load; Stress intensity factor; Thick-walled pipe
- Citation
- INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING, v.88, no.10, pp.403 - 414
- Indexed
- SCIE
SCOPUS
- Journal Title
- INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING
- Volume
- 88
- Number
- 10
- Start Page
- 403
- End Page
- 414
- ISSN
- 0308-0161
- Abstract
- In this paper, information on plastic limit loads and both elastic and elastic-plastic fracture mechanics parameters is given for cracked thick-walled pipes with mean radius-to-thickness ratios ranging from two to five. It is found that existing limit load expressions for thin-walled pipes can be applied to thick-walled pipes, provided that they are normalized with respect to the corresponding un-cracked thick-walled pipe values. For elastic fracture mechanics parameters, FE values of the influence functions for the stress intensity factor and the crack opening displacement are tabulated. For elastic-plastic J, it is shown that existing reference stress based J estimates can be applied, provided that a proper limit load for thick-walled pipes is used. (C) 2011 Elsevier Ltd. All rights reserved.
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