[1] Rayleigh,L.,Theory of Sound.I;Dever publications,New.York,131-132.(1945)
[2] Cauchey,T.K.,O’kelly,M.E.J.,Classical normal modes in damped linear dynamic,systems.J.Appl.Mech.32:(3) ,583-588,(1965)
[3] Fawzy.I.,A theorem on the free vibration of damped systems.J.Appl.Mech.44;(1) ,132-134.(1977)
[4] Foss,K.A.,Co-ordinates which uncouple the equations of motion of damped linear dynamic systems.J.Appl.Mech.25;861-364.(1958)
[5] Thomson,W.T.,Calkins.T.,Caravani,P.,A numerical.study of damping,Earthg.Eng.Struc.Dynamics,3;(1).97-103,(1974)
[6] Cronin,D.L.,Approximation for determining harmonically excited response of nonclassically damped systems,Journal of Engineering for Industry,98;(1) ,43-47.(1976)
[7] Dowell.E.H.,Free vibrations of an arbitrary structure in term of component modes,J.Appl,Mech,39:(3) ,727-732,(1972)
[8] Den Hartog,J.P.,Mechcnical Vibrations,McGraw-Hill,Company,106-107,(1965)
[9] Balda,M,Dynamic properties of turboset rotors,Dynamic of Rotors,Iutam Symposium,27-55,(1974)
[10] Timoshenko,S.,Young,D.H.,Wearev,W.,Jr,Vibration Problems in Engineering,Fouth Edition,272-278,(1974)
[11] Dostal,M.,Roberts,J.B.,Holmes,R.,The effect of external damping on the vibration of flexible shafts supported on oil-film bearings,J.Sound.Vib,51;(1).69-87,(1977)
[13] Brock,J.E.,A note on the damped vibration absorber,J.Appl.Mach,13;(4) ,A-284,(1946)
[14] Zhang Wen,The Unbalance Response of the Flexible Rotor System,Journal of Fudan University,4,(1980). |