The transverse runout of a rotating flexible disc under stationary sliders

Pei, Yong-Chen; He, Lei; He, Fan

doi:10.1243/09544062jmes1282

Cited by 8 publications

(25 citation statements)

References 8 publications

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“…From practice and Krempaszky and Lippmann [22] and Pei et al [29], it is concluded that the initial normal force acting PS, is much larger than the slider total inertial force…”

Section: About Here To Insertmentioning

confidence: 97%

“…A distributed mass-damper-spring loading system [5,10,29] with distributed densities ms/ΔS, cs/ΔS and ks/ΔS is used to model each slider and its suspension. With an initial stress-free transversal runout w [29], the transverse vibrational deflection of the rotating flexible disk is defined as w relative to w , and then the total deflection can be written as W=w+ w . Fig.…”

Section: System Of Governing Equationsmentioning

confidence: 99%

“…From Ouyang and Mottershead [6,9] and Pei et al [10,[27][28][29]37], the governing equation of transversal vibration [30,31] for the rotating thermoelastic disk subjected to the stationary slider loading system with interface friction can be written as…”

Section: About Here To Insertmentioning

confidence: 99%

“…and the initial stress-free transversal runout w can be assumed to be et al[29].With Galerkin's method, substituting Eqs (20). and(21)into Eq.…”

mentioning

confidence: 99%

“…indicated by Eq (30),. with the initial stress-free transversal runout, with a disk mode (m, n), the total deflection W(m,n)(rP, θP, τ) for a given position (rP, θP) vibrates with period 2π/ζ and amplitude A(m,n)(rP, θP)= by Pei et al[29]. Moreover, let the ratio a(m,n)(rP, θP) = A/A0 be the dimensionless amplitude, where A0 is the amplitude of the initial transverse runout at the disk outer edge r=a, for the disk without any slider and load, i.e.…”

mentioning

confidence: 99%

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A thermal boundary control method for a flexible thin disk rotating over critical and supercritical speeds

Pei

Chatwin

et al. 2016

Meccanica

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In practice a rotating flexible thin annular disk has to be operated at low speed, because three types of dynamic instabilities inevitably occur around critical and supercritical speeds, namely: aeroelastic, parametric and thermoelastic. The rotating disk is clamped and driven by a drive shaft attached to the disk inner edge. The external action of the flowing surrounding air causes the aeroelastic instability; a slider mass-damper-spring-friction moving load causes parametric instability; and disk/slider interface friction heat can cause thermoelastic instability. A thermal boundary control method is used to induce disk thermal membrane stresses utilizing drive shaft temperature increments to stabilize these dynamic instabilities. Fundamental investigations are made of disk temperature distribution, thermal stress, natural frequency, dynamic stability and steady state amplitude to validate and demonstrate the viability of the new control method. The thermal boundary control method offers valuable opportunities for rotating disk applications operating over critical and supercritical high speeds with high efficiency.

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“…From practice and Krempaszky and Lippmann [22] and Pei et al [29], it is concluded that the initial normal force acting PS, is much larger than the slider total inertial force…”

Section: About Here To Insertmentioning

confidence: 97%