Sentence examples for unstable speed from inspiring English sources
The intersection of these lines determine the stable and unstable speed ranges of different asymmetric shafts.
Through these analyses the influences of the modeling of rail and rail support on the unstable speed range are examined.
Moreover, for a beam having the same flexural rigidities in the two principal directions of the cross-section, the unstable speed zones shrink to isolated points corresponding to the critical behaviors but only when the end conditions for the transverse vibrations in the two prinicpal directions of the cross-section are identical.
The spinning beams are found to have distinct stable and unstable spinning speed zones separated by critical spinning speeds.
Outward-flow turbines, however, are inherently unstable, and speed control is difficult.
The stability boundary can be used to determine unstable operating speed ranges for different asymmetric shaft cross-sections.
It is found that the unstable spinning speed region can be decreased by increasing the moments of inertia, pretwisted angle or elastic constraints, while the axial compressive load and spinning speed make the beam system become weaker.
This study presents a more accurate measurement method for measuring air pressures in the vane segments when a sliding-vane rotary compressor performs suction and compression phases in either stable or unstable rotational speeds.
The first scalar inner loop stabilizes a plasma unstable vertical position speed at about zero.
The variations of the lowest unstable critical moving speed with respect to several key parameters are also investigated.
The two subharmonic frequencies are equal to (ω+ωn) and (ω−ωn) and also the supersynchronous component of the vibration becomes unstable when the speed ratio ω/ωnis ⩾2.
