The results show that the cross-section method can solve the instantaneous milling thickness effectively, and based on analyzing the dynamic characteristic simulation of milling process at different cutter path, the result is also proved that the Hilbert filling curves can restrain the regenerative chatter effectively.
Research on the Flutters Mechanism of the Turn-milling Machining Micro-miniature Shafts
The test results show that the flutters speed of the wing/remote pivot decoupler pylon/store is much higher than that of the wing/conventional pylon/store and is insensitive to the variation of the store inertia when the store pitch frequency lies in the soft region.
Studied the enhancement the grinding surface quality by high speed grind,after high speed rubs the speed change which truncates to rub truncates the experiment,confirmed the speed change rubs truncates the performance certain degree suppression high speed to rub truncates flutters.
A new semiactive lever-type tuned mass damper (TMD) with an adjustable frequency is proposed to control vertical bending buffeting and torsional buffeting and flutter in the whole velocity range of bridge decks.
The wind excitations of the system are the buffeting and self-excited forces simulated in time domain using measured aerodynamic coefficients and flutter derivatives.
Flutter control effect and mechanism of central-slotting for long-span bridges
If the original section is inappropriate or the slot width is unsuitable, central-slotting will even deteriorate the structural flutter performance.
In an investigation of the flutter of turbines it is necessary to know what is the influence on the unsteady aerodynamic characteristics of a cascade of oscillating profiles of the interaction of cascades in a turbine.
During chatter in metal cutting the tool vibration would cause a variation in "effective" rake angle of the cutter, generating a force variation that depends on penetration rate: a kind of process damping.
It is shown that there is no chatter in the hydraulic valve, which results in smoother operation of the system.
In addition, a novel discrete-time reaching law that can obviously reduce chatter is also put forward.
The resulting dynamic feedback is shown to provide chatter free control if the system is minimum phase with respect to the zero dynamics.
The third reason is to suggest that our linguistic minds create dream puns while we sleep, continuing the mind chatter of the previous day.