{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/21971"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/21971","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Cyclic lateral-torsional buckling of short I-beams","abstract":"This report concerns the inelastic lateral buckling and post-buckling behavior of short I-beams subjected to cyclically reversing loads. The eccentrically braced frame, used in the earthquake resistant design of building structures, provides an application in which lateral buckling of short I-beams under cyclic loading is relevant. Our main purpose is to establish some benchmarks with which to assess the consequences of lateral buckling of active link beams in eccentrically braced frames.","abstract_html":"This report concerns the inelastic lateral buckling and post-buckling behavior of short I-beams subjected to cyclically reversing loads. The eccentrically braced frame, used in the earthquake resistant design of building structures, provides an application in which lateral buckling of short I-beams under cyclic loading is relevant. Our main purpose is to establish some benchmarks with which to assess the consequences of lateral buckling of active link beams in eccentrically braced frames.","abstract_has_math":false,"creators":["Lee, Sang-Gab"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Civil Engineering","degree_department":null,"school":null,"contributors":["Hjelmstad, Keith D."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2011,"date_issued":"2011-05-07T13:24:50Z","date_published":"2011-05-07T13:24:50Z","updated_at":"2026-07-22T22:25:19Z","subjects":["Engineering, Civil"],"languages":["eng"],"rights":["Copyright 1990 Lee, Sang-Gab"],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["AAI9026244","(UMI)AAI9026244"],"render_values":[{"text":"AAI9026244","href":null,"code":true},{"text":"(UMI)AAI9026244","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/21971","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Hjelmstad, Keith D."]},{"key":"dc:creator","label":"Author","values":["Lee, Sang-Gab"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2011-05-07T13:24:50Z","10000-01-01","1990"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Civil Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Engineering, Civil"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 1990 Lee, Sang-Gab"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["AAI9026244","(UMI)AAI9026244","http://hdl.handle.net/2142/21971"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["This report concerns the inelastic lateral buckling and post-buckling behavior of short I-beams subjected to cyclically reversing loads. The eccentrically braced frame, used in the earthquake resistant design of building structures, provides an application in which lateral buckling of short I-beams under cyclic loading is relevant. Our main purpose is to establish some benchmarks with which to assess the consequences of lateral buckling of active link beams in eccentrically braced frames.","A geometrically nonlinear beam model, capable of analyzing lateral buckling of short I-beams under cyclic loading, is formulated in terms of stress components. The novel kinematic model includes a geometrically exact representation of the primary torsional warping as well as secondary warping due to torsion and transverse shear. A new cyclic plasticity model, incorporating many of the most compelling features of existing phenomenological models, is developed and implemented with a consistent return mapping algorithm. The new model represents cyclic metal plasticity well and is suitable for large-scale computation.","The experimental research program comprised five tests of propped cantilever beams subjected to a cyclically reversing point load acting near the fixed end. The experiments include both braced and unbraced beams subjected to similar loading histories. The effects of constitutive parameters, residual stresses, load placement, geometric imperfections, flexible boundary conditions, and lateral bracing are examined using the analytical model developed herein. Most of the parameter studies are carried out using the propped cantilever arrangement used in the experiments.","Made available in DSpace on 2011-05-07T13:24:50Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9026244.pdf: 6733916 bytes, checksum: fea19ca6413412721d941c8f98d18ced (MD5) Previous issue date: 1990","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:54:27Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:25:18-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission","ETDs are only available to UIUC Users without author permission","U of I Only"]},{"key":"dc:title","label":"Title","values":["Cyclic lateral-torsional buckling of short I-beams"]}]}],"canonical_facts":{"dc:contributor":["Hjelmstad, Keith D."],"dc:creator":["Lee, Sang-Gab"],"dc:date":["2011-05-07T13:24:50Z","10000-01-01","1990"],"dc:description":["This report concerns the inelastic lateral buckling and post-buckling behavior of short I-beams subjected to cyclically reversing loads. The eccentrically braced frame, used in the earthquake resistant design of building structures, provides an application in which lateral buckling of short I-beams under cyclic loading is relevant. Our main purpose is to establish some benchmarks with which to assess the consequences of lateral buckling of active link beams in eccentrically braced frames.","A geometrically nonlinear beam model, capable of analyzing lateral buckling of short I-beams under cyclic loading, is formulated in terms of stress components. The novel kinematic model includes a geometrically exact representation of the primary torsional warping as well as secondary warping due to torsion and transverse shear. A new cyclic plasticity model, incorporating many of the most compelling features of existing phenomenological models, is developed and implemented with a consistent return mapping algorithm. The new model represents cyclic metal plasticity well and is suitable for large-scale computation.","The experimental research program comprised five tests of propped cantilever beams subjected to a cyclically reversing point load acting near the fixed end. The experiments include both braced and unbraced beams subjected to similar loading histories. The effects of constitutive parameters, residual stresses, load placement, geometric imperfections, flexible boundary conditions, and lateral bracing are examined using the analytical model developed herein. Most of the parameter studies are carried out using the propped cantilever arrangement used in the experiments.","Made available in DSpace on 2011-05-07T13:24:50Z (GMT). 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