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Showing 1 to 7 of 7 for “"Self-excited vibrations"”.
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Self-excited vibrations of a spinning disk
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1995.
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Passive Broadband Targeted Energy Transfers and Control of Self -Excited Vibrations
Finally, experimental results are presented in connection to the theoretical investigation, and all the predictions on the instability suppression mechanisms are demonstrated experimentally. It is also revealed that the dry friction affects only the robustness of an instability suppression by …
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Influence of Induced Unbalance on Subsynchronous Vibrations of an Automotive Turbocharger
… emissions regulations and rotor design. Self-excited vibrations from sources of damping can lock in at lateral natural frequencies causing dangerously high vibration levels. The resulting high-amplitude conical and bending modes can be reduced in order to achieve a more robust system. …
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ΠΡΟΣΟΜΟΙΩΣΗ ΕΞΕΛΙΞΗΣ ΑΥΤΟΔΙΕΓΕΙΡΟΜΕΝΩΝ ΤΑΛΑΝΤΩΣΕΩΝ ΚΑΤΑ ΤΗΝ ΤΟΡΝΕΥΣΗ ΚΑΙ ΤΟ ΦΡΑΙΖΑΡΙΣΜΑ ΜΕ ΣΚΟΠΟ ΤΟΝ ΠΡΟΣΔΙΟΡΙΣΜΟ ΔΥΝΑΜΙΚΑ ΕΥΣΤΑΘΩΝ ΣΥΝ...
… WORK THE GENERATION AND THE DEVELOPMENT OF SELF- EXCITED VIBRATIONS IN TURNING AND IN MILLING OPERATIONS IS CONSIDERED THROUGH A DEVELOPED TIMEDOMAIN SIMULATION MODEL FOR ITS APPLICATION THE PROPOSED MODEL NEEDS THE EXPERIMENTAL ASSESSMENT OF THE TRANSFER FUNCTIONS OF THE VIBRATIONAL SYSTEM …
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Influence of Bit Design on the Stability of the Rotary Drilling System
… exploration and production experience self-excited vibrations, which can lead to drilling dysfunctions such as bit bounce, stick-slip and whirling. These dysfunctions cause premature failure of drill bits and other components within the system, ultimately leading to increased cost of …
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The Acoustics of Cerebral Aneurysms
… to walls of the blood vessel. Heamodynamics and vibrations are thought to be involved in the degradation of blood vessel structure. A sound, called bruit, is sometimes produced by unruptured brain aneurysms, which is a sign that these cerebral lesions are subject to wall vibrations. The aim of …
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Oil-whirl instability in an automotive turbocharger
… due to oil-whirl are examined. These are self-excited vibrations existing in the form of an in-phase whirl mode and a conical whirl mode. Waterfall plots were provided by Cummins Turbo-Technologies Ltd., Huddersfield, UK, based on test data using two different unbalance levels on a …