Numerical Simulation of Fatigue Crack Initiation and Propagation for In-plane Gusset Welded Joints
Welded built-up steel structures in service encounter many accidents caused by fatigue, and it is important for maintenance of social foundations and safeness to estimate their fatigue lives quantitatively. By considering that fatigue cracks cannot grow without the accumulation of alternating tensil...
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| Veröffentlicht in: | Journal of the Japan Society of Naval Architects and Ocean Engineers 2005, Vol.2, pp.361-367 |
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| container_title | Journal of the Japan Society of Naval Architects and Ocean Engineers |
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| creator | Nagata, Yukinobu Sueda, Akira Gotoh, Koji Toyosada, Masahiro |
| description | Welded built-up steel structures in service encounter many accidents caused by fatigue, and it is important for maintenance of social foundations and safeness to estimate their fatigue lives quantitatively. By considering that fatigue cracks cannot grow without the accumulation of alternating tensile / compressional plastic strain, one of authors identified that the effective stress intensity factor range ΔKRPG based on the Re-tensile Plastic zone Generating (RPG) load which represents the fatigue crack driving forces, and suggests that ΔKRPG should be applied as the parameter in order to describe the fatigue crack growth behavior. For predicting fatigue crack initiation and propagation, numerical simulation code “FLARP” based on ΔKRPG was developed. In this paper, it is confirmed that fatigue life estimation by FLARP gives accurate results by comparing the estimated fatigue crack growth curves with the experimental results for in-plane gusset welded joints which are used in many welded steel structures. Moreover, the effect of induced bending moment due to misalignment for the fatigue strength is investigated by the numerical simulations. |
| doi_str_mv | 10.2534/jjasnaoe.2.361 |
| format | Article |
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By considering that fatigue cracks cannot grow without the accumulation of alternating tensile / compressional plastic strain, one of authors identified that the effective stress intensity factor range ΔKRPG based on the Re-tensile Plastic zone Generating (RPG) load which represents the fatigue crack driving forces, and suggests that ΔKRPG should be applied as the parameter in order to describe the fatigue crack growth behavior. For predicting fatigue crack initiation and propagation, numerical simulation code “FLARP” based on ΔKRPG was developed. In this paper, it is confirmed that fatigue life estimation by FLARP gives accurate results by comparing the estimated fatigue crack growth curves with the experimental results for in-plane gusset welded joints which are used in many welded steel structures. Moreover, the effect of induced bending moment due to misalignment for the fatigue strength is investigated by the numerical simulations.</description><identifier>ISSN: 1880-3717</identifier><identifier>EISSN: 1881-1760</identifier><identifier>DOI: 10.2534/jjasnaoe.2.361</identifier><language>eng</language><publisher>Tokyo: The Japan Society of Naval Architects and Ocean Engineers</publisher><subject>Computer simulation ; Crack initiation ; Crack propagation ; Fatigue failure ; Fatigue life ; Fracture mechanics ; Marine ; Mathematical models ; Steel structures</subject><ispartof>Journal of the Japan Society of Naval Architects and Ocean Engineers, 2005, Vol.2, pp.361-367</ispartof><rights>2005 The Japan Society of Naval Architects and Ocean Engineers</rights><rights>Copyright Japan Science and Technology Agency 2005</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c1981-5d7fa8bc6e5827cda2727dec4e03ae9b65bc6419c4b819428d2972301e8dcbdd3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,1883,4024,27923,27924,27925</link.rule.ids></links><search><creatorcontrib>Nagata, Yukinobu</creatorcontrib><creatorcontrib>Sueda, Akira</creatorcontrib><creatorcontrib>Gotoh, Koji</creatorcontrib><creatorcontrib>Toyosada, Masahiro</creatorcontrib><title>Numerical Simulation of Fatigue Crack Initiation and Propagation for In-plane Gusset Welded Joints</title><title>Journal of the Japan Society of Naval Architects and Ocean Engineers</title><addtitle>J.JASNAOE</addtitle><description>Welded built-up steel structures in service encounter many accidents caused by fatigue, and it is important for maintenance of social foundations and safeness to estimate their fatigue lives quantitatively. 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Moreover, the effect of induced bending moment due to misalignment for the fatigue strength is investigated by the numerical simulations.</description><subject>Computer simulation</subject><subject>Crack initiation</subject><subject>Crack propagation</subject><subject>Fatigue failure</subject><subject>Fatigue life</subject><subject>Fracture mechanics</subject><subject>Marine</subject><subject>Mathematical models</subject><subject>Steel structures</subject><issn>1880-3717</issn><issn>1881-1760</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><recordid>eNpdkM1LxDAQxYsouH5cPQc8eOqapGmTHnVx15VFBRWPIU2ma2q3WZP24H9vtCriYZgJ7_fC4yXJCcFTmmfsvGlU6JSDKZ1mBdlJJkQIkhJe4N2vG6cZJ3w_OQihwZhFUUyS6nbYgLdatejBboZW9dZ1yNVoHq_1AGjmlX5Fy872dtRUZ9C9d1u1Ht-181FOt63qAC2GEKBHz9AaMOjG2a4PR8lerdoAx9_7MHmaXz3OrtPV3WI5u1ilmpQxaG54rUSlC8gF5dooyik3oBngTEFZFXnUGCk1qwQpGRWGlpxmmIAwujImO0zOxn-33r0NEHq5sUFD-xnMDUEKVrKci5JF8vQf2bjBdzGcJIznlJV5XkRqOlLauxA81HLr7Ub5d0mw_Gxc_jQuqYyNR8PlaGhCr9bwiyvfW93CXxx_TTT9ivpFeQld9gHNaY72</recordid><startdate>2005</startdate><enddate>2005</enddate><creator>Nagata, Yukinobu</creator><creator>Sueda, Akira</creator><creator>Gotoh, Koji</creator><creator>Toyosada, Masahiro</creator><general>The Japan Society of Naval Architects and Ocean Engineers</general><general>Japan Science and Technology Agency</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TB</scope><scope>7TN</scope><scope>8FD</scope><scope>F1W</scope><scope>FR3</scope><scope>KR7</scope></search><sort><creationdate>2005</creationdate><title>Numerical Simulation of Fatigue Crack Initiation and Propagation for In-plane Gusset Welded Joints</title><author>Nagata, Yukinobu ; Sueda, Akira ; Gotoh, Koji ; Toyosada, Masahiro</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c1981-5d7fa8bc6e5827cda2727dec4e03ae9b65bc6419c4b819428d2972301e8dcbdd3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2005</creationdate><topic>Computer simulation</topic><topic>Crack initiation</topic><topic>Crack propagation</topic><topic>Fatigue failure</topic><topic>Fatigue life</topic><topic>Fracture mechanics</topic><topic>Marine</topic><topic>Mathematical models</topic><topic>Steel structures</topic><toplevel>online_resources</toplevel><creatorcontrib>Nagata, Yukinobu</creatorcontrib><creatorcontrib>Sueda, Akira</creatorcontrib><creatorcontrib>Gotoh, Koji</creatorcontrib><creatorcontrib>Toyosada, Masahiro</creatorcontrib><collection>CrossRef</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Oceanic Abstracts</collection><collection>Technology Research Database</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><jtitle>Journal of the Japan Society of Naval Architects and Ocean Engineers</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Nagata, Yukinobu</au><au>Sueda, Akira</au><au>Gotoh, Koji</au><au>Toyosada, Masahiro</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Numerical Simulation of Fatigue Crack Initiation and Propagation for In-plane Gusset Welded Joints</atitle><jtitle>Journal of the Japan Society of Naval Architects and Ocean Engineers</jtitle><addtitle>J.JASNAOE</addtitle><date>2005</date><risdate>2005</risdate><volume>2</volume><spage>361</spage><epage>367</epage><pages>361-367</pages><issn>1880-3717</issn><eissn>1881-1760</eissn><abstract>Welded built-up steel structures in service encounter many accidents caused by fatigue, and it is important for maintenance of social foundations and safeness to estimate their fatigue lives quantitatively. By considering that fatigue cracks cannot grow without the accumulation of alternating tensile / compressional plastic strain, one of authors identified that the effective stress intensity factor range ΔKRPG based on the Re-tensile Plastic zone Generating (RPG) load which represents the fatigue crack driving forces, and suggests that ΔKRPG should be applied as the parameter in order to describe the fatigue crack growth behavior. For predicting fatigue crack initiation and propagation, numerical simulation code “FLARP” based on ΔKRPG was developed. In this paper, it is confirmed that fatigue life estimation by FLARP gives accurate results by comparing the estimated fatigue crack growth curves with the experimental results for in-plane gusset welded joints which are used in many welded steel structures. 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| source | J-STAGE Free; Freely Accessible Japanese Titles; EZB-FREE-00999 freely available EZB journals |
| subjects | Computer simulation Crack initiation Crack propagation Fatigue failure Fatigue life Fracture mechanics Marine Mathematical models Steel structures |
| title | Numerical Simulation of Fatigue Crack Initiation and Propagation for In-plane Gusset Welded Joints |
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