{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/21444"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/21444","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"A variable amplitude multiaxial fatigue life prediction method","abstract":"A method to estimate the fatigue life of a component subjected to variable amplitude multiaxial loading has been developed. It is based upon an extension of the strain-life approach which achieved success in correlating the fatigue lives of components subjected to uniaxial variable amplitude loading. In addition, it incorporates multiaxial damage models that relate fatigue damage to remote loading parameters. A computer model was developed to implement the proposed method.","abstract_html":"A method to estimate the fatigue life of a component subjected to variable amplitude multiaxial loading has been developed. It is based upon an extension of the strain-life approach which achieved success in correlating the fatigue lives of components subjected to uniaxial variable amplitude loading. In addition, it incorporates multiaxial damage models that relate fatigue damage to remote loading parameters. A computer model was developed to implement the proposed method.","abstract_has_math":false,"creators":["Bannantine, Julie Ann"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Mechanical Engineering","degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2011,"date_issued":"2011-05-07T13:08:49Z","date_published":"2011-05-07T13:08:49Z","updated_at":"2026-07-22T22:25:18Z","subjects":["Engineering, Mechanical","Engineering, Metallurgy","Engineering, Materials Science"],"languages":["eng"],"rights":["Copyright 1989 Bannantine, Julie Ann"],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["AAI9010800","(UMI)AAI9010800"],"render_values":[{"text":"AAI9010800","href":null,"code":true},{"text":"(UMI)AAI9010800","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/21444","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Bannantine, Julie Ann"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2011-05-07T13:08:49Z","10000-01-01","1989"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Mechanical 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, Mechanical","Engineering, Metallurgy","Engineering, Materials Science"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 1989 Bannantine, Julie Ann"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["AAI9010800","(UMI)AAI9010800","http://hdl.handle.net/2142/21444"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["A method to estimate the fatigue life of a component subjected to variable amplitude multiaxial loading has been developed. It is based upon an extension of the strain-life approach which achieved success in correlating the fatigue lives of components subjected to uniaxial variable amplitude loading. In addition, it incorporates multiaxial damage models that relate fatigue damage to remote loading parameters. A computer model was developed to implement the proposed method.","Measured or estimated strain histories are used as input in the method. Corresponding stress histories are calculated using a nonproportional cyclic plasticity model. Damage is calculated using the stress and strain histories and the multiaxial damage models. The plane experiencing the maximum damage is identified as the critical plane and the fatigue life of the component is estimated from the damage calculations on this plane.","Experimental test results were used to verify and evaluate the proposed method. The measured stress-strain response of thin wall tubes loaded in combined tension and torsion was used to verify the nonproportional cyclic plasticity model. Good correlation between predicted and measured responses was observed. Results from tests conducted on SAE 1045 steel components, loaded in bending, proportional bending and torsion, and nonproportional bending and torsion, were used to evaluate the overall method. Again, good correlation between predicted and actual fatigue lives was achieved.","The computer model was also used to gain a better understanding of the local stress and strain states developed under nonproportional cyclic multiaxial loading and the effects of this loading on fatigue life. Observations and examples leading to this increased understanding are presented.","Made available in DSpace on 2011-05-07T13:08:49Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9010800.pdf: 8477989 bytes, checksum: cc133bc8cf3a0d68362eb16e41ba26b9 (MD5) Previous issue date: 1989","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:50:49Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:23:15-05:00 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":["A variable amplitude multiaxial fatigue life prediction method"]}]}],"canonical_facts":{"dc:creator":["Bannantine, Julie Ann"],"dc:date":["2011-05-07T13:08:49Z","10000-01-01","1989"],"dc:description":["A method to estimate the fatigue life of a component subjected to variable amplitude multiaxial loading has been developed. It is based upon an extension of the strain-life approach which achieved success in correlating the fatigue lives of components subjected to uniaxial variable amplitude loading. In addition, it incorporates multiaxial damage models that relate fatigue damage to remote loading parameters. A computer model was developed to implement the proposed method.","Measured or estimated strain histories are used as input in the method. Corresponding stress histories are calculated using a nonproportional cyclic plasticity model. Damage is calculated using the stress and strain histories and the multiaxial damage models. The plane experiencing the maximum damage is identified as the critical plane and the fatigue life of the component is estimated from the damage calculations on this plane.","Experimental test results were used to verify and evaluate the proposed method. The measured stress-strain response of thin wall tubes loaded in combined tension and torsion was used to verify the nonproportional cyclic plasticity model. Good correlation between predicted and measured responses was observed. Results from tests conducted on SAE 1045 steel components, loaded in bending, proportional bending and torsion, and nonproportional bending and torsion, were used to evaluate the overall method. Again, good correlation between predicted and actual fatigue lives was achieved.","The computer model was also used to gain a better understanding of the local stress and strain states developed under nonproportional cyclic multiaxial loading and the effects of this loading on fatigue life. Observations and examples leading to this increased understanding are presented.","Made available in DSpace on 2011-05-07T13:08:49Z (GMT). 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