Local strain computation of crack initiation life of an unstiffened steel tubular T-joint
This paper presents the results of the fatigue crack initiation life estimation for offshore tubular welded joints. The results are obtained by using the fatigue strength exponent, b, and fatigue ductility exponent, c, computed by a backcalculation procedure from an extensive experimental crack init...
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| Veröffentlicht in: | Computers & structures 1995-10, Vol.57 (2), p.267-275 |
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| container_title | Computers & structures |
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| creator | Nwosu, D.I. Swamidas, A.S.J. Olowokere, D.O. |
| description | This paper presents the results of the fatigue crack initiation life estimation for offshore tubular welded joints. The results are obtained by using the fatigue strength exponent,
b, and fatigue ductility exponent,
c, computed by a backcalculation procedure from an extensive experimental crack initiation estimation of both small scale and medium scale welded steel tubular joints. A general purpose finite element package, ABAQUS, was used for the stress analysis. This allows for the accurate determination of the critical location where the crack/cracks is/are likely to initiate. From the stress analysis, the stress and strain concentration factors (SCF and SNCF) along the intersection of the tube were obtained. The peak SCF and SNCF were used in modified Neuber's rule and the result introduced into a Manson-Coffin model for crack initiation life computation. The results obtained were compared with the experimental results previously obtained at the Canadian Cooperative Fatigue Studies Program. |
| doi_str_mv | 10.1016/0045-7949(94)00612-7 |
| format | Article |
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b, and fatigue ductility exponent,
c, computed by a backcalculation procedure from an extensive experimental crack initiation estimation of both small scale and medium scale welded steel tubular joints. A general purpose finite element package, ABAQUS, was used for the stress analysis. This allows for the accurate determination of the critical location where the crack/cracks is/are likely to initiate. From the stress analysis, the stress and strain concentration factors (SCF and SNCF) along the intersection of the tube were obtained. The peak SCF and SNCF were used in modified Neuber's rule and the result introduced into a Manson-Coffin model for crack initiation life computation. The results obtained were compared with the experimental results previously obtained at the Canadian Cooperative Fatigue Studies Program.</description><identifier>ISSN: 0045-7949</identifier><identifier>EISSN: 1879-2243</identifier><identifier>DOI: 10.1016/0045-7949(94)00612-7</identifier><language>eng</language><publisher>Oxford: Elsevier Ltd</publisher><subject>Applied sciences ; Building structure ; Buildings. Public works ; Construction (buildings and works) ; Exact sciences and technology ; Metal structure ; Stresses. Safety ; Structural analysis. Stresses</subject><ispartof>Computers & structures, 1995-10, Vol.57 (2), p.267-275</ispartof><rights>1995</rights><rights>1995 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c364t-7e9bb9667076674a11be3c46c052b1cad227f6164dc71079e6ca10166ea4b5553</citedby><cites>FETCH-LOGICAL-c364t-7e9bb9667076674a11be3c46c052b1cad227f6164dc71079e6ca10166ea4b5553</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/0045794994006127$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=3622670$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Nwosu, D.I.</creatorcontrib><creatorcontrib>Swamidas, A.S.J.</creatorcontrib><creatorcontrib>Olowokere, D.O.</creatorcontrib><title>Local strain computation of crack initiation life of an unstiffened steel tubular T-joint</title><title>Computers & structures</title><description>This paper presents the results of the fatigue crack initiation life estimation for offshore tubular welded joints. The results are obtained by using the fatigue strength exponent,
b, and fatigue ductility exponent,
c, computed by a backcalculation procedure from an extensive experimental crack initiation estimation of both small scale and medium scale welded steel tubular joints. A general purpose finite element package, ABAQUS, was used for the stress analysis. This allows for the accurate determination of the critical location where the crack/cracks is/are likely to initiate. From the stress analysis, the stress and strain concentration factors (SCF and SNCF) along the intersection of the tube were obtained. The peak SCF and SNCF were used in modified Neuber's rule and the result introduced into a Manson-Coffin model for crack initiation life computation. The results obtained were compared with the experimental results previously obtained at the Canadian Cooperative Fatigue Studies Program.</description><subject>Applied sciences</subject><subject>Building structure</subject><subject>Buildings. Public works</subject><subject>Construction (buildings and works)</subject><subject>Exact sciences and technology</subject><subject>Metal structure</subject><subject>Stresses. Safety</subject><subject>Structural analysis. Stresses</subject><issn>0045-7949</issn><issn>1879-2243</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1995</creationdate><recordtype>article</recordtype><recordid>eNp9kM1OxCAUhYnRxHH0DVx0YYwuqkApyMbETPxLJnEzLlwRSm8Txg6MQE18e6mdzNINJPCdc-85CJ0TfEMw4bcYs7oUkskrya4x5oSW4gDNyJ2QJaWsOkSzPXKMTmJc40wxjGfoY-mN7ouYgrauMH6zHZJO1rvCd4UJ2nwW1tlkp7fedjB-aFcMLibbdeCgzWqAvkhDM_Q6FKty7a1Lp-io032Es909R-9Pj6vFS7l8e35dPCxLU3GWSgGyaSTnAot8ME1IA5Vh3OCaNsTollLRccJZawTBQgI3egzNQbOmrutqji4n323wXwPEpDY2Guh77cAPUVHBiGSMZ5BNoAk-xgCd2ga70eFHEaxGSzWWpMaSlGTqr0clsuxi569jrqoL2hkb99qKU5qXz9j9hEHO-m0hqGgsOAOtDWCSar39f84vaZyGVA</recordid><startdate>19951017</startdate><enddate>19951017</enddate><creator>Nwosu, D.I.</creator><creator>Swamidas, A.S.J.</creator><creator>Olowokere, D.O.</creator><general>Elsevier Ltd</general><general>Elsevier Science</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>19951017</creationdate><title>Local strain computation of crack initiation life of an unstiffened steel tubular T-joint</title><author>Nwosu, D.I. ; Swamidas, A.S.J. ; Olowokere, D.O.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c364t-7e9bb9667076674a11be3c46c052b1cad227f6164dc71079e6ca10166ea4b5553</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1995</creationdate><topic>Applied sciences</topic><topic>Building structure</topic><topic>Buildings. Public works</topic><topic>Construction (buildings and works)</topic><topic>Exact sciences and technology</topic><topic>Metal structure</topic><topic>Stresses. Safety</topic><topic>Structural analysis. Stresses</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Nwosu, D.I.</creatorcontrib><creatorcontrib>Swamidas, A.S.J.</creatorcontrib><creatorcontrib>Olowokere, D.O.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Computers & structures</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Nwosu, D.I.</au><au>Swamidas, A.S.J.</au><au>Olowokere, D.O.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Local strain computation of crack initiation life of an unstiffened steel tubular T-joint</atitle><jtitle>Computers & structures</jtitle><date>1995-10-17</date><risdate>1995</risdate><volume>57</volume><issue>2</issue><spage>267</spage><epage>275</epage><pages>267-275</pages><issn>0045-7949</issn><eissn>1879-2243</eissn><abstract>This paper presents the results of the fatigue crack initiation life estimation for offshore tubular welded joints. The results are obtained by using the fatigue strength exponent,
b, and fatigue ductility exponent,
c, computed by a backcalculation procedure from an extensive experimental crack initiation estimation of both small scale and medium scale welded steel tubular joints. A general purpose finite element package, ABAQUS, was used for the stress analysis. This allows for the accurate determination of the critical location where the crack/cracks is/are likely to initiate. From the stress analysis, the stress and strain concentration factors (SCF and SNCF) along the intersection of the tube were obtained. The peak SCF and SNCF were used in modified Neuber's rule and the result introduced into a Manson-Coffin model for crack initiation life computation. The results obtained were compared with the experimental results previously obtained at the Canadian Cooperative Fatigue Studies Program.</abstract><cop>Oxford</cop><pub>Elsevier Ltd</pub><doi>10.1016/0045-7949(94)00612-7</doi><tpages>9</tpages></addata></record> |
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| ispartof | Computers & structures, 1995-10, Vol.57 (2), p.267-275 |
| issn | 0045-7949 1879-2243 |
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| source | ScienceDirect Journals (5 years ago - present) |
| subjects | Applied sciences Building structure Buildings. Public works Construction (buildings and works) Exact sciences and technology Metal structure Stresses. Safety Structural analysis. Stresses |
| title | Local strain computation of crack initiation life of an unstiffened steel tubular T-joint |
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