Completed notes of the course

Pagina 1

Structural dynamics and aeroelasticity New paragraph/ new theorem Demonstration Definition Important Legend TYPICALSECTION • TYPICAL SECTION : RIGID WINGMOUNTEDOn an ELASTIC <un ED SUPPOTZT RIGID WITHa Constant SECTION → STRUCTURE Span perpendicolare TO WIND SPEED DEFORMABILITY CONCENTRATE in A To rs i o n a l e SPRING AT ROOT ZD STRIPTHEORY AERODYNAMICS ac EA LINEAR BEHAVIOUR SINCE☐nl> LOW AMPLITUDE PITCHOSCILLATIONS e are CONSIDERED ° TOES/☐~ : IT IS THE TW'STING OF ☐NE SECT/☐~ OFAN OBJECT WITH RESPECTTO ANOTHER - SHEAR CENTER : IT IS A POINT OF A ZD SECTION VVHERE IF YOU APPLT A TRANSVERSE SHEAR LOAD IT Products ZERO RATE OF TWIST ON THE SECT/On • ELASTIC a✗1Si IT IS THE LOCUS OF SHEAR CENTERS ALONG THE SPAN OF THE WING • FLEXURAL CENTER |TWIST CENTER )i it IS THE Point W#ERE THE SHEAR (☐AD PAPPLIEDTO cantilever DOES NOT CAUSE torsioni OF THE SECT/On ABC, but not NECESSARILT in THE WING / la): Ò(b):O. . FCLOT EA 1 zFLEXURAL CENTER ELASTIC AXIS a 0 • O= 0 AT THEFinal SECT/On WHERETHELOAD IS APPLIED ②= 0 AT THEFinal SECT/On WHE.EETHELOAD IS APPLIED • THE torsioni is null ☐ult on THE SECTION VVHERE THE LOAD IS APPLIED • THE FC OF EUERY SECT/ON IS CLEARLY DEPENDENT on THE SECT/ON ITSELF ,but ALSO DEPENDE ON THEUTHER SECTIONS EA: IT IS a proPERTY OFTHESINGLE SECT/On {,,, ,, ,, a yoga , aaaaa , o, ,.ee , .ae «augure ,, , aaaaa, ,,, ma , ,.am , gagnon , gg,.ae ,,, o, con ,,,,㱺 , THE FCCHANCES • aerodinamico CENTER : Point OF THE SECT/UN AROUND OF WHICH (M DOESN'TDEFEND on THE Variation OF THE AOA [MAC× =D REMENDER THAT WE'RE in THE Linear IZED FRAMEWORK Far FROM STALL EQUILIBRIUM POSITIONOF THEELASTICTWIST ✗o 0Mac va 'a' K" ✗ = ✗o+0 e • L= 9Scala )= qsc.la/✗o +0)= 9Scio + 95Ciao LIFT GENERATEDBYaerodinamico FORCES LIFT GENERATED B> ELASTIC DEFORMATI ☐~ i Mac= qsccmac Ma Ms…