3745

3539

كارشناسي ارشد

طراحي كاربردي

اصفهان :دانشگاه صنعتي اصفهان، دانشكده مكانيك

1386

نه ،108 ،[II]ص. :مصور،جدول،نمودار

ص.ع.به فارسي و انگليسي

مصطفي غيور، مهران مرادي

مصطفي غيور، مهران مرادي

04/09/86

سعيد ضيائي راد، مهدي كشميري

مهندسي مكانيك

ID3539

به فارسي و انگليسي :قابل رؤيت در نسخه ديجيتال

AbstractLinear free vibrations of cylindrical shell is analyzed in this research by means of ABAQUSsoftware acoustic option Liquid is assumed nonviscose and incompressible First natural frequencies of vertical cylindrical shell are calculated for various filling ratiowith clamped free and clamped clamped boundary condition Numerical results are validatedthrough comparison with results of experimental and semi analytical finite element methods After validation more natural frequencies are calculated for various filling ratio Second the analysis of vertical cylindrical shell natural frequencies and mode shapes ofhorizontal cylindrical shell are calculated and compared with results obtained by usingRayleigh Ritz method Then considering oscillation of free surface natural frequencies of thesame shell with the same wet angles are calculated Third validation of the results for unaxisymmetric geometry natural frequencies of horizontaltank which is obtained by adding two flexible plates to previous horizontal shell arecalculated Then a horizontal tank with elliptical section and area equal to the previous tank isanalyzed as a model of fuel carrying tank of a truck It is shown that mode shapes don tchange but natural frequencies decrease noticeably Finally behavior of partially liquid filled shell is analyzed under harmonic load and theamplitude of a point at the middle of the shell versus the excitation frequency is plotted It isshown that resonance occurs when excitation frequency is equal to the natural frequency

مصطفي غيور، مهران مرادي

مصطفي غيور، مهران مرادي

سعيد ضيائي راد، مهدي كشميري