Torsional oscillations in symmetrical structures
نویسندگان
چکیده
منابع مشابه
Torsional saccadic oscillations
We present a case of torsional saccadic oscillations and discuss the possible underlying neuroanatomical substrate. Correspondence to: Marcello Cherchi, M.D., Ph.D., Ken and Ruth Davee Department of Neurology, Northwestern Feinberg School of Medicine, Abbott Hall, 11th Floor, 710 N. Lake Shore Drive, Chicago, IL 60611-3078, USA, Tel: 312-908-8266; E-mail: [email protected] Received...
متن کاملOrigin of Solar Torsional Oscillations
Helioseismology has revealed many details of solar differential rotation and also its time variation, known as torsional oscillations. So far there is no generally accepted theoretical explanation for torsional oscillations, even though a close relation to the solar activity cycle is evident. On the theoretical side non-kinematic dynamo models (including the Lorentz force feedback on differenti...
متن کاملActive Suppression of Torsional Oscillations
A problem with electrically driven vehicles is resonances in the drive train caused by elasticity and gear play. Disadvantageous effects caused by this are noticeable vibrations and high mechanical stresses due to torque oscillations. The oscillations can be damped using a control structure consisting of a nonlinear observer to estimate the torque in the gear and a controller, which computes a ...
متن کاملSelf-oscillations in nonlinear torsional metamaterials
We study the nonlinear dynamics of torsional meta-molecules—subwavelength resonators with strong coupling between electromagnetic excitation and rotational deformation—and show that such structures may undergo self-oscillations. We develop a semi-analytical model to evaluate the electromagnetic–elastic coupling in such structures. By analysing the local stability of the system, we reveal two di...
متن کاملTorsional electromechanical quantum oscillations in carbon nanotubes.
Carbon nanotubes can be distinctly metallic or semiconducting depending on their diameter and chirality. Here we show that continuously varying the chirality by mechanical torsion can induce conductance oscillations, which can be attributed to metal –semiconductor periodic transitions. The phenomenon is observed in multiwalled carbon nanotubes, where both the torque and the current are shown to...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Applied Mathematical Modelling
سال: 1984
ISSN: 0307-904X
DOI: 10.1016/0307-904x(84)90050-7