Sentence examples for whirl speed from inspiring English sources

The succinct expression of frequency (whirl speed) equations for hinged hinged free and clamped hinged free rotors are given.

In view of the contact between drillstring and borehole, an iterative solution for the model was given to analyze drillstring dynamic characteristics, such as whirl orbit, whirl speed, lateral and axial accelerations.

In particular, the whirl speeds and mode shapes, backward and forward, of a rotating shaft are obtained as spin speed and boundary conditions vary, and the unbalance responses are calculated by using modal analysis.

By applying ordinary eigenvalue analysis for linear time-invariant systems, the whirl speeds of mistuned bladed rotor are examined for cases of weak and strong inter-blade coupling conditions.

The whirl speeds and mode shapes of the uniform asymmetrical shaft are investigated, and the effects of the boundary conditions and rotor asymmetry on the modal properties and stabilities are examined.

The mistuning effect on the whirl speeds of the bladed rotor is then explained by classifying the whirling modes into three types according to their cause of manifestation and the frequency relationship: namely, original, coupled multi-blade, and conjugate whirling modes.

As an initial step toward understanding the fully coupled dynamics of mistuned bladed disk-shaft systems, this paper investigates the frequency characteristics of natural whirl speeds associated with the in-plain vibration of a rotating mistuned bladed disk mounted on an isotropic support.

The whirling speed amplitude and frequency of horizontal drillstring increase with rising rotary speed.

The presence of the open crack with the unbalance force was found only to excite the 1/2 and 1/3 of the backward critical whirling speed.

While unlike the breathing crack model, the subcritical forward whirling speeds have not been observed for the open crack model in the response to the unbalance force.

The stability of a rotating cracked shaft subjected to the end load, an axial compressive force, is studied and the influences of the existing open crack on the natural whirling speeds of the shaft are discussed.