On the vibration of a rotating disk

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August undefined, 2024

Web29 de fev. de 2012 · Rotating disk vibration - interaction resonance. As this is my initial submission on Dynamics & Acoustics, I should start with aspects of Wilfred Campbell’s “Campbell Diagrams”, Ref. [1]. This article will offer an explanation of “minor resonance” of disks, better-termed interaction resonance, and end with a suggestion to be cautious ... WebExperimental studies with stationary and rotating disks are presented covering forced vibration in the linear and nonlinear zones. The results show that a non-linear stationary wave may exist in a rotating disk over a wide speed range depending on the magnitude of the applied force.

The coupled vibration in a rotating multi-disk rotor system

WebIn this work, a continuum model is proposed to simulate and interpret the coupling vibration characteristics of a rotating disk-beam system with the dovetail interfaces. The dovetail … Web2 de set. de 2024 · In some embodiments, the vibration motors 155 and 140 may be activated to provide vibration therapy in a wave sequence of vibration that goes from applying vibration at the front of the foreheads, to eyebrows to cheeks to temples (e.g., via the vibration motors 155 in the eye portion, to ears, and around the user's head (via the … pheasant\u0027s-eyes 5h

Study on Influence of Multi-Parameter Variation of Bladed Disk …

WebThis paper gives an analytical approach for investigating free and forced transverse vibrations of a clamped-free rotating annular disk and obtaining the acoustic pressure distribution around the spinning disk. In the beginning, a modal analysis based on new analytical methods is carried out to find natural frequencies and mode shapes of the … WebVibration Control in a Co-rotating Twin-Spool Rotor System Under Base Excitation and Mass Unbalance Using Active Magnetic Bearings ... For optimized AMBTSRS, the maximum amplitude of vibration at the bearings and disks locations are found to decrease by 73.66% and 96.97%, respectively, with respect to the system with conventional bearings. Web15 de mar. de 2024 · They can be used to measure vibration responses of the disk in rotating cases and so does the eddy current sensor (Bently 3300XL) near the edge of the disk. In non-rotating cases, two accelerometers (PCB 352C33) are also used to obtain the vibrations of two points on the disk, one of which is near the center, labeled as Acc 2, … pheasant\u0027s-eyes 5k

On the Vibration of a Rotating Disk Semantic Scholar

[PDF] Vibration Characteristics of Rotating Disks with Aerodynamic ...

WebVibration Control in a Co-rotating Twin-Spool Rotor System Under Base Excitation and Mass Unbalance Using Active Magnetic Bearings ... For optimized AMBTSRS, the … Web15 de jan. de 2024 · Meanwhile, the disk-drum rotor vibration problem plays an essential role in aero-engine whole-body vibration. Therefore, it is necessary to study the coupling vibration of the rotating-flexible disk-drum structure, and the relative research results would be conducive to the design of the rotor system including cylindrical shells and plates. pheasant\u0027s-eyes 58WebThe natural frequency and responses for the nonlinear free vibration ofheated rotating disks are presented analytically when nonuniformtemperature distributions pertaining to the laminar and turbulentairflow induced by disk rotation are considered. The nonuniformtemperature distributions on the disk are highly dependent on itsrotation … pheasant\u0027s-eyes 5t

"Web23 de mar. de 2024 · In this study, forced vibration of a rotating disk is investigated. The disk is clamped at the inner and free at the outer circumferences. A time varying … " - On the vibration of a rotating disk

On the vibration of a rotating disk

The coupled vibration in a rotating multi-disk rotor system

Web1 de jan. de 2003 · Al-Nassar et al. [6] investigated vibration of a rotating blade on a torsionally flexible shaft. The instability regions of the blade vibrations, where the torsional excitation frequency is lower ... Web8 de jan. de 2010 · Then, the nonlinear vibrations of free-edge circular plates is studied by using the von Kármán equations of motion for circular plates. Finally, the problem of …

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Web27 de jan. de 2024 · Li. C. Free vibration analysis of a rotating varying-thickness-twisted ... A. & Afzalipour, L. The influences of stagger and pretwist angles of blades on coupling …

Web1 de set. de 1995 · The instability mechanisms of a rotating disk, coupled to a rigid surface through a viscous fluid film at the interface, are investigated analytically. The fluid in the film is driven circumferentially by the viscous shear, and it flows outwards radially under centrifugal forces. The circumferential flow component creates an equivalent viscous … WebAs the main components of the rotor system of aero-engines and other rotating machinery equipment, the bladed disk system has high requirements on its structure design, safety and stability. Taking the rotor disk system of aero-engines as the research object, modal calculation of the rotor disk system was based on the group theory algorithm, and using …

WebAdditionally, the effects of the rotating speed, GPL distribution pattern, GPL weight fraction, length-to-thickness ratio and length-to-width ratio of GPLs, inner and outer radius of the disk, and pre-twist angle per unit length, setting angle and length of the blade on free vibration characteristics of the rotating blade-shaft assembly are discussed in detail. Web1 de jan. de 2011 · Fig. 4 shows the frequency changes due to disks in a five-blades rotor. 1a and 1b modes belong to a set where the blade’s first mode predominates in a multi …

Web13 de set. de 2006 · Abstract. Free vibrations of a spinning disk–shaft system are analysed using the finite-element method. The spinning disk is described by the Kirchhoff plate …

Web22 de jul. de 2004 · Consider a flexible disk fixed to a shaft with angular misalignment, which is illustrated in Fig. 1. The disk rotates about the rotation axis or the shaft axis with a rotating speed Ω and a rotating acceleration Ω ̇.The rotation axis of the disk is not parallel to the symmetry axis, as shown in Fig. 1.The angular misalignment of the disk is defined … pheasant\u0027s-eyes 5wWebWhen sand particles are entrained into carrier flow, such as liquid, a strong interaction occurs with the surface of the metallic material, resulting in serious erosion damage. … pheasant\u0027s-eyes 6Webstudied the free vibration of a centrally clamped spinning disk. Barasch and Chen (1972) investigated on the natural frequencies of rotating disk using modified Adam’s method. Iwan and Moeller (1976) explored the vibration behavior and stability of spinning disks subject to stationary transverse loads. pheasant\u0027s-eyes 5zWeb14 de nov. de 2016 · Platter wobble – Caused by a slight imbalance in the rotating platters. It is a readily identifiable sinusoidal vibration at a frequency that exactly corresponds to the rotational speed of the platter … pheasant\u0027s-eyes 62Weba high speed rotating disk at a constant speed and yields producing a resistive gyroscopic torque as a source of angular momentum (Schlick, 1904a, b). pheasant\u0027s-eyes 3kWeb15 de mar. de 2024 · As for a harmonic force rotating with the disks, the responses in the rotating frame have similar characteristic as those in the non-rotating case. But the … pheasant\u0027s-eyes 6bWeb1 de jun. de 1996 · In this paper, experimental measurements, varying the rotating speed of a disk-blade-disk assembly and exciting the first natural frequencies of the rotating frame, have been performed. pheasant\u0027s-eyes 63