- About
-
The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
Search results
Showing 171 to 180 of 420 (0.028 seconds)Spelling suggestions: "subject:"dcotors."" "subject:"dcmotors.""
| 171 |
Contribution à l'analyse du comportement dynamique de machines tournantes en régime transitoire approches métrique et expérimentale /Allezy, Arnaud Dufour, Regis. January 2006 (has links)
Thèse doctorat : Mécanique : Villeurbanne, INSA : 2006. / Titre provenant de l'écran-titre. Bibliogr. p. 184-186.
|
| 172 |
Comportement dynamique et stabilité des rotors application aux rotors composites /Sino, Rim Jacquet-Richardet, Georges. January 2007 (has links)
Thèse doctorat : Génie Mécanique : Villeurbanne, INSA : 2007. / Titre provenant de l'écran-titre. Bibliogr. p. 113-118.
|
| 173 |
Conception et modélisation d'une électrobroche grande vitesse résolution de problèmes couplés /Antoine, Jean-François. Molinari, Alain Abba, Gabriel. January 2008 (has links) (PDF)
Reproduction de : Thèse doctorat : Génie mécanique : Metz : 2004. / Titre provenant de l'écran-titre. Notes bibliographiques.
|
| 174 |
PWM-based asymmetrical rotor synchronous/industion driveSo, Ting-pat, Albert, 蘇廷弼 January 1988 (has links)
published_or_final_version / Electrical Engineering / Master / Master of Philosophy
|
| 175 |
Condition monitoring of a rotor bearing system.Grobler, Herbert Alfred. 22 May 2013 (has links)
The key objective for this research was to construct an experimental test rig along with a finite
element model. Both had to accommodate a certain extent of misalignment and unbalance to
provide induced vibrations in the system. Misalignment and unbalance was then varied in
magnitude to identify the effect it has on the system. The next variable was the rotor speed
and its effects. Finally the experimental and theoretical results were compared and the slight
differences have been outlined and described.
A rotor supported by two bearings with a disk attached to the middle and a three jaw coupling
at the one end was considered for this research. The three jaw coupling consists out of two
hub elements with concave jaws and a rubber element that fits in-between the jaws. The
rotor-bearing system was subjected to unbalance at the disk and both angular and parallel
misalignment at the coupling. Misalignment was achieved by offsetting the centre of rotation
of the rotor and the motor shaft. Finite element analysis, along with Lagrange method, was
used to model the behaviour of the system. A mathematical model for the three jaw coupling
was derived to simulate its behaviour. The second order Lagrange model was reduced to a first
order and solved using the Runge-Kutta method. Experimental results were obtained from a
test rig and used to validate the theoretical results. Time domain and frequency spectrum
were used to display the results. / Thesis (M.Sc.Eng.)-University of KwaZulu-Natal, Durban, 2011.
|
| 176 |
Aerodynamic interactions between bodies in relative motionSchreiber, Olivier 08 1900 (has links)
No description available.
|
| 177 |
Finite difference techniques and rotor blade aeroelastic partial differential equations with quasisteady aerodynamicsYillikci, Yildirim Kemal 12 1900 (has links)
No description available.
|
| 178 |
Development and validation of a generalized ground effect model for lifting rotorsXin, Hong 08 1900 (has links)
No description available.
|
| 179 |
Unsteady vortex lattice aerodynamics for rotor aeroelasticity in hover and in forward flightYoo, Kyung M. 12 1900 (has links)
No description available.
|
| 180 |
Unsteady drag and dynamic stall as simulated in a varying freestreamKunz, Donald Lee 05 1900 (has links)
No description available.
|
Page generated in 0.0357 seconds