self-excited vibration

self-excited vibration

[¦self ik′sīd·əd vī′brā·shən]
References in periodicals archive ?
The self-excited vibration, called chatter, is one of the main limitation in metal removal processes.
They are free, forced and self-excited vibrations [17].
The self-excited vibration degrades the safety of the bridge and worsens the ride comfort of vehicle, which is a burning issue to be solved [4-6].
Up to the present, extensive investigations on the principle underlying the maglev self-excited vibration have been reported.
Under continuous machining conditions, two types of vibration occur as a result of movement between a work-piece and tool: external vibration (result of interference force transmitted through the foundation into the machine); self-excited vibration, (the machine system oscillates, basically, at one or more natural frequencies, when no external forces are acting).
They also provide a unique analysis of dynamical problems, such as nonlinear rotordynamics, self-excited vibration, nonstationary vibration, and flow-induced oscillations.
Stick-slip was found numerically, but not validated with testing; a conclusion was drawn that it was associated with the self-excited vibration.
The final result they found was that the self-excited vibrations reduced with the high levels of system damping.
These vibrations can be categorized into three different types, free vibrations, forced vibrations and self-excited vibrations [1].
On the other hand, self-excited vibrations occur most commonly when waviness from a previous pass interact to form a positive feedback loop with subsequent passes in a mechanism called regeneration of waviness or more commonly just regenerative chatter.
Keywords: self-excited vibrations, dynamic model 3D in turning, dynamic model 2D equivalent in turning,