{"title":"焊接梁柱连接的有限元断裂分析","authors":"Wei-Ming Chi, G. Deierlein, A. Ingraffea","doi":"10.1520/STP13419S","DOIUrl":null,"url":null,"abstract":"Unexpected brittle cracking of welded beam-column connections during the 1994 Northridge earthquake has raised serious concerns about standards and practice for the seismic design and construction of steel moment resisting frames. As part of a nationally coordinated program to investigate the connection damage, finite-element fracture analyses are used to quantify fracture toughness demands in welded beam-column connections as influenced by various detailing parameters. Toughness demands at weld root defects in the beam flange groove welds are quantified in terms of K 1 , CTOD, and CTOA. Summarized are insights concerning the role of finite-element fracture analyses to investigate fracture behavior and the influence of factors such as flaw sizes, weld strengths, inelastic crack growth, and other parameters affecting fracture toughness demands.","PeriodicalId":8583,"journal":{"name":"ASTM special technical publications","volume":"54 1","pages":"439-455"},"PeriodicalIF":0.0000,"publicationDate":"2000-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"6","resultStr":"{\"title\":\"Finite-Element Fracture Analyses of Welded Beam-Column Connections\",\"authors\":\"Wei-Ming Chi, G. Deierlein, A. Ingraffea\",\"doi\":\"10.1520/STP13419S\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Unexpected brittle cracking of welded beam-column connections during the 1994 Northridge earthquake has raised serious concerns about standards and practice for the seismic design and construction of steel moment resisting frames. As part of a nationally coordinated program to investigate the connection damage, finite-element fracture analyses are used to quantify fracture toughness demands in welded beam-column connections as influenced by various detailing parameters. Toughness demands at weld root defects in the beam flange groove welds are quantified in terms of K 1 , CTOD, and CTOA. Summarized are insights concerning the role of finite-element fracture analyses to investigate fracture behavior and the influence of factors such as flaw sizes, weld strengths, inelastic crack growth, and other parameters affecting fracture toughness demands.\",\"PeriodicalId\":8583,\"journal\":{\"name\":\"ASTM special technical publications\",\"volume\":\"54 1\",\"pages\":\"439-455\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2000-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"6\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"ASTM special technical publications\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1520/STP13419S\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"ASTM special technical publications","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1520/STP13419S","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Finite-Element Fracture Analyses of Welded Beam-Column Connections
Unexpected brittle cracking of welded beam-column connections during the 1994 Northridge earthquake has raised serious concerns about standards and practice for the seismic design and construction of steel moment resisting frames. As part of a nationally coordinated program to investigate the connection damage, finite-element fracture analyses are used to quantify fracture toughness demands in welded beam-column connections as influenced by various detailing parameters. Toughness demands at weld root defects in the beam flange groove welds are quantified in terms of K 1 , CTOD, and CTOA. Summarized are insights concerning the role of finite-element fracture analyses to investigate fracture behavior and the influence of factors such as flaw sizes, weld strengths, inelastic crack growth, and other parameters affecting fracture toughness demands.
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