Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 9 of 9 for “"epicyclic"”.
-
Epicyclic Gear Train Solution Techniques with Application to Tandem Bicycling
… design aids. It will also address the use of epicyclic gear trains as a power coupling in a tandem bike. In the current literature, planetary gear trains are given a clear treatment with regard to the pure kinematics of the system, but little or no literature exists that includes the torques …
-
The Dynamics of Magnetised Warped Discs
… warp and what we have called ‘Alfv$\acute e$nic-epicyclic’ oscillation modes, the magnetic analogues to epicyclic oscillations, are found to have potentially profound and hitherto unexplored consequences for the evolution of the warp. Resonances between the vertical oscillation mode and the …
-
Novel design and geometry for mechanical gearing
… gear pair. The investigation is then extended to epicyclic transmissions as they are considered the most viable solution when the transmission of high torque level within a compact volume is required. Since, for the current study, only low speed conditions are considered, dynamic loads do not play …
-
Variability of black-hole accretion discs: a theoretical study
… appear to be excited near the maximum of the epicyclic frequency and are global in the sense that their frequency is maintained for a wide range of radii. The second class of models looks at accretion-disc oscillations which are trapped due to the non-monotonic variation of the epicyclic …
-
Closing the circle: Neil Gunn's creation of a 'meta-novel' of the Highlands
… outlined in the introduction via a series of 'epicyclic journeys' which approach the problems from the perspectives of childhood, history and culture, each contributing to the achievement of a positive conclusion. By considering the interplay between each chapter heading and the content of the …
-
Nonlinear Dynamics of Warped Astrophysical Discs
… for which resonances between the orbital and epicyclic frequencies demand a separate treatment compared with previous theoretical frameworks. We solve the ideal, compressible fluid equations for a non-selfgravitating elliptical cylinder within a local shearing sheet. By restricting attention …
-
Υπολογιστική ανάλυση εξωτερικής βλητικής. Διερεύνηση αεροδυναμικής συμπεριφοράς αξονοσυμμετρικών βλημάτων σε ελεύθερη ατμοσφαιρική πτήση
Η σύγχρονη επιστήμη της εξωτερικής βλητικής έχει εξελιχθεί ως εξειδικευμένος κλάδος της δυναμικής των στερεών σωμάτων, που κινούνται υπό την επίδραση της βαρύτητας και των αεροδυναμικών δυνάμεων και ροπών. Στην παρούσα διατριβή μελετάται η προσομοίωση του δυναμικού μοντέλου ατμοσφαιρικής τροχιάς …
-
Vibration-Based Health Monitoring of Multiple-Stage Gear Train and Differential Planetary Transmission Involving Teeth Damage and Backlash Nonlinearity
<p>The objective of this thesis is to develop vibration-based fault detection strategies for on-line condition monitoring of gear transmission systems. The study divides the thesis into three sections. First of all, the local stresses created by a root fatigue crack on a pinion spur gear are …