{"id":"https://openalex.org/W2015067073","doi":"https://doi.org/10.1109/acc.2014.6859339","title":"Modeling and analysis of rotational freeplay nonlinearity of a 2D airfoil","display_name":"Modeling and analysis of rotational freeplay nonlinearity of a 2D airfoil","publication_year":2014,"publication_date":"2014-06-01","ids":{"openalex":"https://openalex.org/W2015067073","doi":"https://doi.org/10.1109/acc.2014.6859339","mag":"2015067073"},"language":"en","primary_location":{"id":"doi:10.1109/acc.2014.6859339","is_oa":false,"landing_page_url":"https://doi.org/10.1109/acc.2014.6859339","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2014 American Control Conference","raw_type":"proceedings-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5079486201","display_name":"David Asjes","orcid":null},"institutions":[{"id":"https://openalex.org/I173911158","display_name":"Iowa State University","ror":"https://ror.org/04rswrd78","country_code":"US","type":"education","lineage":["https://openalex.org/I173911158"]}],"countries":["US"],"is_corresponding":true,"raw_author_name":"D. Asjes","raw_affiliation_strings":["Iowa State University, Ames, IA, US","Dept. of Mech. Eng., Iowa State Univ., Ames, IA, USA"],"affiliations":[{"raw_affiliation_string":"Iowa State University, Ames, IA, US","institution_ids":["https://openalex.org/I173911158"]},{"raw_affiliation_string":"Dept. of Mech. Eng., Iowa State Univ., Ames, IA, USA","institution_ids":["https://openalex.org/I173911158"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5053339049","display_name":"Amit Diwadkar","orcid":"https://orcid.org/0000-0003-4259-7119"},"institutions":[{"id":"https://openalex.org/I2802789608","display_name":"Ames National Laboratory","ror":"https://ror.org/041m9xr71","country_code":"US","type":"facility","lineage":["https://openalex.org/I1330989302","https://openalex.org/I173911158","https://openalex.org/I2802789608","https://openalex.org/I39565521"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"A. Diwadkar","raw_affiliation_strings":["VSI Aerospace, Ames, IA, 50010, USA","VSI Aerosp., Ames, IA, USA"],"affiliations":[{"raw_affiliation_string":"VSI Aerospace, Ames, IA, 50010, USA","institution_ids":["https://openalex.org/I2802789608"]},{"raw_affiliation_string":"VSI Aerosp., Ames, IA, USA","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5050749492","display_name":"Umesh Vaidya","orcid":"https://orcid.org/0000-0002-0483-4921"},"institutions":[{"id":"https://openalex.org/I173911158","display_name":"Iowa State University","ror":"https://ror.org/04rswrd78","country_code":"US","type":"education","lineage":["https://openalex.org/I173911158"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"U. Vaidya","raw_affiliation_strings":["Iowa State University, Ames, IA, US","Dept. of Electr. & Comput. Eng., Iowa State Univ., Ames, IA, USA#TAB#"],"affiliations":[{"raw_affiliation_string":"Iowa State University, Ames, IA, US","institution_ids":["https://openalex.org/I173911158"]},{"raw_affiliation_string":"Dept. of Electr. & Comput. Eng., Iowa State Univ., Ames, IA, USA#TAB#","institution_ids":["https://openalex.org/I173911158"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5063908561","display_name":"Atul Kelkar","orcid":null},"institutions":[{"id":"https://openalex.org/I173911158","display_name":"Iowa State University","ror":"https://ror.org/04rswrd78","country_code":"US","type":"education","lineage":["https://openalex.org/I173911158"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"A. Kelkar","raw_affiliation_strings":["Iowa State University, Ames, IA, US","Dept. of Mech. Eng., Iowa State Univ., Ames, IA, USA"],"affiliations":[{"raw_affiliation_string":"Iowa State University, Ames, IA, US","institution_ids":["https://openalex.org/I173911158"]},{"raw_affiliation_string":"Dept. of Mech. Eng., Iowa State Univ., Ames, IA, USA","institution_ids":["https://openalex.org/I173911158"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5108690040","display_name":"Jerald Vogel","orcid":null},"institutions":[{"id":"https://openalex.org/I2802789608","display_name":"Ames National Laboratory","ror":"https://ror.org/041m9xr71","country_code":"US","type":"facility","lineage":["https://openalex.org/I1330989302","https://openalex.org/I173911158","https://openalex.org/I2802789608","https://openalex.org/I39565521"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"J. M. Vogel","raw_affiliation_strings":["VSI Aerospace, Ames, IA, 50010, USA","VSI Aerosp., Ames, IA, USA"],"affiliations":[{"raw_affiliation_string":"VSI Aerospace, Ames, IA, 50010, USA","institution_ids":["https://openalex.org/I2802789608"]},{"raw_affiliation_string":"VSI Aerosp., Ames, IA, USA","institution_ids":[]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5049644341","display_name":"D. CHAUSSEE","orcid":null},"institutions":[{"id":"https://openalex.org/I2802789608","display_name":"Ames National Laboratory","ror":"https://ror.org/041m9xr71","country_code":"US","type":"facility","lineage":["https://openalex.org/I1330989302","https://openalex.org/I173911158","https://openalex.org/I2802789608","https://openalex.org/I39565521"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"D. Chaussee","raw_affiliation_strings":["VSI Aerospace, Ames, IA, 50010, USA","VSI Aerosp., Ames, IA, USA"],"affiliations":[{"raw_affiliation_string":"VSI Aerospace, Ames, IA, 50010, USA","institution_ids":["https://openalex.org/I2802789608"]},{"raw_affiliation_string":"VSI Aerosp., Ames, IA, USA","institution_ids":[]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":6,"corresponding_author_ids":["https://openalex.org/A5079486201"],"corresponding_institution_ids":["https://openalex.org/I173911158"],"apc_list":null,"apc_paid":null,"fwci":2.4294,"has_fulltext":false,"cited_by_count":5,"citation_normalized_percentile":{"value":0.89046075,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":96},"biblio":{"volume":null,"issue":null,"first_page":"1162","last_page":"1167"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11096","display_name":"Aeroelasticity and Vibration Control","score":0.9998000264167786,"subfield":{"id":"https://openalex.org/subfields/2202","display_name":"Aerospace Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11096","display_name":"Aeroelasticity and Vibration Control","score":0.9998000264167786,"subfield":{"id":"https://openalex.org/subfields/2202","display_name":"Aerospace Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10690","display_name":"Vibration Control and Rheological Fluids","score":0.9990000128746033,"subfield":{"id":"https://openalex.org/subfields/2205","display_name":"Civil and Structural Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11254","display_name":"Fluid Dynamics and Vibration Analysis","score":0.9983999729156494,"subfield":{"id":"https://openalex.org/subfields/2206","display_name":"Computational Mechanics"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/flutter","display_name":"Flutter","score":0.9483808279037476},{"id":"https://openalex.org/keywords/airfoil","display_name":"Airfoil","score":0.7117162942886353},{"id":"https://openalex.org/keywords/nonlinear-system","display_name":"Nonlinear system","score":0.6141105890274048},{"id":"https://openalex.org/keywords/aeroelasticity","display_name":"Aeroelasticity","score":0.5897278785705566},{"id":"https://openalex.org/keywords/freestream","display_name":"Freestream","score":0.569408655166626},{"id":"https://openalex.org/keywords/limit-cycle","display_name":"Limit cycle","score":0.5142078399658203},{"id":"https://openalex.org/keywords/describing-function","display_name":"Describing function","score":0.49316996335983276},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.4569156765937805},{"id":"https://openalex.org/keywords/control-theory","display_name":"Control theory (sociology)","score":0.4452223479747772},{"id":"https://openalex.org/keywords/hopf-bifurcation","display_name":"Hopf bifurcation","score":0.42338305711746216},{"id":"https://openalex.org/keywords/instability","display_name":"Instability","score":0.41912710666656494},{"id":"https://openalex.org/keywords/wind-tunnel","display_name":"Wind tunnel","score":0.41379106044769287},{"id":"https://openalex.org/keywords/bifurcation","display_name":"Bifurcation","score":0.40745267271995544},{"id":"https://openalex.org/keywords/mathematical-analysis","display_name":"Mathematical analysis","score":0.3647249937057495},{"id":"https://openalex.org/keywords/mechanics","display_name":"Mechanics","score":0.3186584413051605},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.29843366146087646},{"id":"https://openalex.org/keywords/limit","display_name":"Limit (mathematics)","score":0.28779304027557373},{"id":"https://openalex.org/keywords/aerodynamics","display_name":"Aerodynamics","score":0.2818584442138672},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.2350825071334839},{"id":"https://openalex.org/keywords/reynolds-number","display_name":"Reynolds number","score":0.08890435099601746}],"concepts":[{"id":"https://openalex.org/C2777834885","wikidata":"https://www.wikidata.org/wiki/Q13417156","display_name":"Flutter","level":3,"score":0.9483808279037476},{"id":"https://openalex.org/C112124176","wikidata":"https://www.wikidata.org/wiki/Q4698744","display_name":"Airfoil","level":2,"score":0.7117162942886353},{"id":"https://openalex.org/C158622935","wikidata":"https://www.wikidata.org/wiki/Q660848","display_name":"Nonlinear system","level":2,"score":0.6141105890274048},{"id":"https://openalex.org/C117185709","wikidata":"https://www.wikidata.org/wiki/Q381448","display_name":"Aeroelasticity","level":3,"score":0.5897278785705566},{"id":"https://openalex.org/C2776911258","wikidata":"https://www.wikidata.org/wiki/Q5501170","display_name":"Freestream","level":4,"score":0.569408655166626},{"id":"https://openalex.org/C93357160","wikidata":"https://www.wikidata.org/wiki/Q1545916","display_name":"Limit cycle","level":3,"score":0.5142078399658203},{"id":"https://openalex.org/C147317941","wikidata":"https://www.wikidata.org/wiki/Q1925419","display_name":"Describing function","level":3,"score":0.49316996335983276},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.4569156765937805},{"id":"https://openalex.org/C47446073","wikidata":"https://www.wikidata.org/wiki/Q5165890","display_name":"Control theory (sociology)","level":3,"score":0.4452223479747772},{"id":"https://openalex.org/C172435161","wikidata":"https://www.wikidata.org/wiki/Q531126","display_name":"Hopf bifurcation","level":4,"score":0.42338305711746216},{"id":"https://openalex.org/C207821765","wikidata":"https://www.wikidata.org/wiki/Q405372","display_name":"Instability","level":2,"score":0.41912710666656494},{"id":"https://openalex.org/C100086909","wikidata":"https://www.wikidata.org/wiki/Q193010","display_name":"Wind tunnel","level":2,"score":0.41379106044769287},{"id":"https://openalex.org/C2781349735","wikidata":"https://www.wikidata.org/wiki/Q4904824","display_name":"Bifurcation","level":3,"score":0.40745267271995544},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.3647249937057495},{"id":"https://openalex.org/C57879066","wikidata":"https://www.wikidata.org/wiki/Q41217","display_name":"Mechanics","level":1,"score":0.3186584413051605},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.29843366146087646},{"id":"https://openalex.org/C151201525","wikidata":"https://www.wikidata.org/wiki/Q177239","display_name":"Limit (mathematics)","level":2,"score":0.28779304027557373},{"id":"https://openalex.org/C13393347","wikidata":"https://www.wikidata.org/wiki/Q8424","display_name":"Aerodynamics","level":2,"score":0.2818584442138672},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.2350825071334839},{"id":"https://openalex.org/C182748727","wikidata":"https://www.wikidata.org/wiki/Q178932","display_name":"Reynolds number","level":3,"score":0.08890435099601746},{"id":"https://openalex.org/C2775924081","wikidata":"https://www.wikidata.org/wiki/Q55608371","display_name":"Control (management)","level":2,"score":0.0},{"id":"https://openalex.org/C196558001","wikidata":"https://www.wikidata.org/wiki/Q190132","display_name":"Turbulence","level":2,"score":0.0},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.0},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/acc.2014.6859339","is_oa":false,"landing_page_url":"https://doi.org/10.1109/acc.2014.6859339","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2014 American Control Conference","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/7","score":0.8199999928474426,"display_name":"Affordable and clean energy"}],"awards":[],"funders":[{"id":"https://openalex.org/F4320337657","display_name":"Naval Air Systems Command","ror":"https://ror.org/054ajk512"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":17,"referenced_works":["https://openalex.org/W103015593","https://openalex.org/W1966627700","https://openalex.org/W1992068782","https://openalex.org/W2021737403","https://openalex.org/W2022899676","https://openalex.org/W2024390836","https://openalex.org/W2025640053","https://openalex.org/W2080396669","https://openalex.org/W2083517289","https://openalex.org/W2091783372","https://openalex.org/W2093223582","https://openalex.org/W2107452415","https://openalex.org/W2115725464","https://openalex.org/W2160724374","https://openalex.org/W2162240738","https://openalex.org/W3036407787","https://openalex.org/W4247265502"],"related_works":["https://openalex.org/W2564887547","https://openalex.org/W2048494080","https://openalex.org/W2128719156","https://openalex.org/W2115351049","https://openalex.org/W2571202851","https://openalex.org/W2074607275","https://openalex.org/W2353430195","https://openalex.org/W2137542477","https://openalex.org/W2255935004","https://openalex.org/W2155557158"],"abstract_inverted_index":{"Aeroelastic":[0],"flutter":[1,45,68,88,134,163],"is":[2,21,52,116,128,189],"a":[3,14,77,103,120,137,168,183],"dynamic":[4],"instability":[5,69],"of":[6,33,44,59,87,106,133,140,170,186],"fluid-structural":[7],"system":[8,36,98,108,142],"in":[9,29,114],"which":[10,66],"the":[11,34,42,57,62,67,91,96,141,155,162,187],"structure":[12],"exhibits":[13],"sustained,":[15],"often":[16],"diverging":[17],"oscillation.":[18],"Flutter":[19],"behavior":[20],"self-feeding":[22],"and":[23,46,109,135],"destructive.":[24],"Nonlinearities":[25],"such":[26],"as":[27,56,102,119],"freeplay":[28,60,92,100,171],"rigid-body":[30],"rotational":[31],"stiffness":[32,115],"structural":[35],"can":[37],"have":[38],"an":[39],"effect":[40],"on":[41,90],"onset":[43,132,164],"its":[47],"amplitude.":[48],"In":[49,72],"particular":[50],"there":[51],"experimental":[53],"evidence":[54],"that":[55,80],"amount":[58],"increases,":[61],"freestream":[63],"velocity":[64,89,165],"at":[65,125],"occurs":[70],"decreases.":[71],"this":[73,85],"paper,":[74],"we":[75],"develop":[76],"modeling":[78],"framework":[79],"allows":[81],"us":[82,151],"to":[83,130,145,153,166,182],"predict":[84,131],"dependence":[86],"parameter.":[93],"We":[94],"model":[95,188],"airfoil":[97],"with":[99],"nonlinearity":[101],"feedback":[104],"interconnection":[105],"linear":[107],"sector":[110],"bounded":[111],"nonlinearity.":[112,122],"Freeplay":[113],"practically":[117],"approximated":[118],"hyperbola":[121],"Eigenvalue":[123],"analysis":[124,150,160],"equilibrium":[126],"points":[127],"used":[129,152],"characterize":[136,154],"Hopf":[138],"bifurcation":[139],"from":[143],"stable":[144],"limit":[146,156],"cycle":[147,157],"behavior.":[148,158],"Spectral":[149],"This":[159],"indicates":[161],"be":[167],"function":[169],"region":[172],"length.":[173],"Follow-on":[174],"research":[175],"correlating":[176],"recently":[177],"obtained":[178],"wind":[179],"tunnel":[180],"results":[181],"three-dimensional":[184],"extension":[185],"outlined.":[190]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2021,"cited_by_count":1},{"year":2017,"cited_by_count":2},{"year":2016,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}