大型民用飛機非線性彈性載荷設(shè)計方法研究
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中圖分類號：V211.47 文獻標志碼：B 文章編號：1671-5276（2025）03-0176-04
Research on Nonlinear Elastic Load Design of Large Civil Aircraft
LIUXiaochen，TANLinlin （Shanghai Aircraft Designand Research Institute，Shanghai 2O1210，China）
Abstract：Basedontheactual engineringrequirements inloaddesign，anonlinearstaticaeroelastic trimminganalysisandload calculation methodforcivillargeaireraftisdeveloed.Acivilaircraftistakenasanexampletoanalyzethenonlinearstatic aeroelasticloadoflargedeformationstate，andthenonlineartrimanalysisandloaddesignresultsunderdiferentmanbeam stiffnessarestudiedandcompared.Researchshowsthatthereisasignificantdiferenceintheresultsoflinearandnolineartrim analysisunderlargedeformationconditions，resulting invaryingdegreesofatackangles，structuraldeformation，andload distributionacrosstheentireaireraft，which indicatesthatlinear methodscannotaccuratelyguideloaddesignaftersignificant structuraldeformationoccurs.Thecomparisonofthestiffnesscalculationresultsofdiferentmainbeamsontheshowsthatthe elasticloadcalculationresultsaredirectlyrelated tothestifnessofthewingmainbeam.Thesmalerthestifessofthemain beam，the greater the difference betweenlinear and nonlinear trimresults.
Keywords：civil aircraft；nonlinear；aeroelastic； load design
0 引言
進人21世紀以來，超大容量運輸機開始研制，其中當前比較著名的機型有A380、B787和An-225 。（剩余4560字）