Global ETD Search

161	Damping in stiffener welded structures / Ehnes, Charles W. January 2003 (has links) (PDF) Thesis (M.S. in Mechanical Engineering)--Naval Postgraduate School, June 2003. / Thesis advisor(s): Young S. Shin, Ilbae Ham. Includes bibliographical references (p. 49). Also available online. Vibration. Damping (Mechanics) Welding.
162	A water tunnel investigation of a small scale rotor operating in the vortex ring state / Rumsey, Charles B. January 2003 (has links) (PDF) Thesis (M.S. in Applied Physics)--Naval Postgraduate School, June 2003. / Thesis advisor(s): E. Roberts Wood, Steven R. Baker. Includes bibliographical references (p. 59-60). Also available online. Vortex-motion. Vibration (Aeronautics)
163	Analysis and control of an electrodynamic shaker Macdonald, H. M. January 1994 (has links) No description available. 621.31042 Vibration testing
164	On the stabilization and related problems of beams Liu, Chao, 劉超 January 2005 (has links) published_or_final_version / Mathematics / Doctoral / Doctor of Philosophy
165	Site-specific comparisons of random vibration theory-based and traditional seismic site response analysis Ozbey, Mehmet Cem 28 August 2008 (has links) Not available / text Earth movements Random vibration
166	Free vibration of rotating hollow spheres containing acoustic media Shatov, MY, Joubert, SV, Coetzee, CE, Fedotoc, IA 16 April 2008 (has links) Abstract When avibratingstructureisrotatedwithrespecttoinertialspace,thevibratingpatternrotatesatarateproportionalto the inertialrateofrotation.Bryanfirstobservedthiseffectin1890.Theeffect,calledBryan’seffectinthesequel,has numerous navigationalapplicationsandcouldbeusefulinunderstandingthedynamicsofpulsatingstarsandearthquake series inastrophysicsandseismology.Bryan’sfactor(thecoefficientofproportionalitybetweentheinertialandvibrating pattern rotationrates)dependsonthegeometryofthestructureandthevibrationmodenumber.The‘‘gyroscopiceffects’’ of ahollowisotropicsolidspherefilledwithaninviscidacousticmediumareconsideredhere,butthetheoryisreadily adapted toahollowisotropicsolidcylinderfilledwithaninviscidacousticmedium.Alineartheoryisdevelopedassuming, among othermildconditions,thattherotationrateisconstantandmuchsmallerthanthelowesteigenfrequencyofthe vibrating system.Thuscentrifugalforcesareconsideredtobenegligible.Beforecalculatingsolutionsforthedisplacement of aparticleintheisotropic,spherical,distributedbody,Bryan’sfactorisinterpretedusingacomplexfunction.Hereitis demonstrated thatneitherBryan’seffectnorBryan’sfactorisinfluencedbyincludinglight,isotropic,viscousdampingin the mathematicalmodel.Hencedampingisneglectedinthesequel.Twoscenariosarethenidentified.Firstly,wemay assume thattheacousticmediumiscompletelyinvolvedintherotation(thespheroidalmode).Secondly,wemayassume that theacousticmediumremainsstaticwithrespecttotheinertialreferenceframe(thetorsionalmode).Weinvestigatethe spheroidal modeusinganumericalexperimentthatcomparestherotationalangularrateofasphere(filledwithaninviscid acoustic medium)withthoseofitsvibratingpatternsatbothhighandlowvibrationfrequency. Vibrating patterns Vibration frequency
167	Stability and bifurcation in flow induced vibration 徐善強, Chui, Sin-keung. January 1997 (has links) published_or_final_version / Civil and Structural Engineering / Doctoral / Doctor of Philosophy Vibration. Stability. Bifurcation theory.
168	FLEXURAL VIBRATION OF BEAMS WITH EXTERNAL VISCOUS DAMPING Meitz, Robert Otto, 1934- January 1968 (has links) No description available. Vibration (Aeronautics) Damping (Mechanics)
169	NATURAL FREQUENCIES AND MODE SHAPES OF THE TRUNCATED CONICAL SHELL WITH FREE EDGES Krause, Frederick Arthur, 1936- January 1968 (has links) No description available. Shells (Engineering) -- Vibration.
170	THE EFFECT OF UNIFORMLY SPACED ELASTIC SUPPORTS ON THE MODAL PATTERNS ANDNATURAL FREQUENCIES OF A UNIFORM CIRCULAR RING McKinley, Joseph William, 1937- January 1970 (has links) No description available. Vibration. Frequency response (Dynamics)

Search results