Crack Interaction Criteria in Pressure Vessels and Pipe
An attempt was made to define a new crack interaction criterion for pressurized cylinders with two co-planar surface cracks. Elastic-plastic finite element method with line spring concept (line spring element method) was used to verify the validity of the new interaction criterion and to establish t...
Published in: | Journal of Offshore Mechanics and Arctic Engineering |
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ASME-AMER SOC MECHANICAL ENG
1995
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ftuisanist:oai:scholarworks.unist.ac.kr:201301/25778 2023-05-15T14:24:28+02:00 Crack Interaction Criteria in Pressure Vessels and Pipe Kim, Dong Sub Lo, KH 1995-11 https://scholarworks.unist.ac.kr/handle/201301/25778 https://doi.org/10.1115/1.2827232 http://offshoremechanics.asmedigitalcollection.asme.org/article.aspx?articleid=1453271 ?????? unknown ASME-AMER SOC MECHANICAL ENG JOURNAL OF OFFSHORE MECHANICS AND ARCTIC ENGINEERING-TRANSACTIONS OF THE ASME, v.117, no.4, pp.260 - 264 0892-7219 https://scholarworks.unist.ac.kr/handle/201301/25778 3756 31934 2-s2.0-0029405474 A1995TT21600006 doi:10.1115/1.2827232 http://offshoremechanics.asmedigitalcollection.asme.org/article.aspx?articleid=1453271 ARTICLE ART 1995 ftuisanist https://doi.org/10.1115/1.2827232 2022-05-15T05:32:01Z An attempt was made to define a new crack interaction criterion for pressurized cylinders with two co-planar surface cracks. Elastic-plastic finite element method with line spring concept (line spring element method) was used to verify the validity of the new interaction criterion and to establish the relative conservatism built into various codes/standards. The crack interaction criteria of two co-planar surface cracks as defined by ASME Section XI and BS PD6493 were studied and a new interaction criterion which accounts for crack shape and load factor was introduced. The basic idea behind the crack interaction criteria for co-planar surface cracks was the plastic zone and stress interaction near crack tips. To verify the new crack interaction criterion, comparisons of J -integral values were made for various crack sizes with different distances between cracks and loading conditions. Based upon these comparisons, the new crack interaction criteria, comparing a physical distance, s , to a characteristic distance d =(??/??y )2 (c 1 Q 1 + c 2 Q 2 ), proved to be a reasonable parameter for indication of the crack driving force interaction for co-planar cracks. The characteristic distance also represents a rigorous measure of an equivalent crack driving force for interacting cracks. Article in Journal/Newspaper Arctic ScholarWorks@UNIST (Ulsan National Institute of Science and Technology) Journal of Offshore Mechanics and Arctic Engineering 117 4 260 264 |
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ScholarWorks@UNIST (Ulsan National Institute of Science and Technology) |
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ftuisanist |
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unknown |
description |
An attempt was made to define a new crack interaction criterion for pressurized cylinders with two co-planar surface cracks. Elastic-plastic finite element method with line spring concept (line spring element method) was used to verify the validity of the new interaction criterion and to establish the relative conservatism built into various codes/standards. The crack interaction criteria of two co-planar surface cracks as defined by ASME Section XI and BS PD6493 were studied and a new interaction criterion which accounts for crack shape and load factor was introduced. The basic idea behind the crack interaction criteria for co-planar surface cracks was the plastic zone and stress interaction near crack tips. To verify the new crack interaction criterion, comparisons of J -integral values were made for various crack sizes with different distances between cracks and loading conditions. Based upon these comparisons, the new crack interaction criteria, comparing a physical distance, s , to a characteristic distance d =(??/??y )2 (c 1 Q 1 + c 2 Q 2 ), proved to be a reasonable parameter for indication of the crack driving force interaction for co-planar cracks. The characteristic distance also represents a rigorous measure of an equivalent crack driving force for interacting cracks. |
format |
Article in Journal/Newspaper |
author |
Kim, Dong Sub Lo, KH |
spellingShingle |
Kim, Dong Sub Lo, KH Crack Interaction Criteria in Pressure Vessels and Pipe |
author_facet |
Kim, Dong Sub Lo, KH |
author_sort |
Kim, Dong Sub |
title |
Crack Interaction Criteria in Pressure Vessels and Pipe |
title_short |
Crack Interaction Criteria in Pressure Vessels and Pipe |
title_full |
Crack Interaction Criteria in Pressure Vessels and Pipe |
title_fullStr |
Crack Interaction Criteria in Pressure Vessels and Pipe |
title_full_unstemmed |
Crack Interaction Criteria in Pressure Vessels and Pipe |
title_sort |
crack interaction criteria in pressure vessels and pipe |
publisher |
ASME-AMER SOC MECHANICAL ENG |
publishDate |
1995 |
url |
https://scholarworks.unist.ac.kr/handle/201301/25778 https://doi.org/10.1115/1.2827232 http://offshoremechanics.asmedigitalcollection.asme.org/article.aspx?articleid=1453271 |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
JOURNAL OF OFFSHORE MECHANICS AND ARCTIC ENGINEERING-TRANSACTIONS OF THE ASME, v.117, no.4, pp.260 - 264 0892-7219 https://scholarworks.unist.ac.kr/handle/201301/25778 3756 31934 2-s2.0-0029405474 A1995TT21600006 doi:10.1115/1.2827232 http://offshoremechanics.asmedigitalcollection.asme.org/article.aspx?articleid=1453271 |
op_doi |
https://doi.org/10.1115/1.2827232 |
container_title |
Journal of Offshore Mechanics and Arctic Engineering |
container_volume |
117 |
container_issue |
4 |
container_start_page |
260 |
op_container_end_page |
264 |
_version_ |
1766296875314446336 |