Experimental comparison of the nonlinear dynamic behavior of a rigid rotor interacting with two types of different radial backup bearings: Ball &amp; pinned

Fonseca, Cesar Augusto; Santos, Ilmar; Weber, Hans Ingo

doi:10.1016/j.triboint.2017.07.018

Cited by 7 publications

(2 citation statements)

References 15 publications

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“…3. The rotor consists of an inner steel shaft 24 with the axial permanent magnet bearing (PMB) 28 bolted onto one end and a compressor wheel 19 bolted onto the 1 Tilting frame, 2 Gimbal, 3 Housing, 4 Accelerometer, 5 Power Supplies for AMBs, 6 Pneumatic Supplies, 7 Pneumatic Actuator Position Sensor, 8 Pneumatic Actuator for Pitching, 9 Pneumatic Actuator for Surging, 10 Rail, 11 Translating Frame, 12 Proximity Probe Conditioners, 13 Electronic Cabinet. other end.…”

Section: Housing and Rotormentioning

confidence: 99%

Magnetically suspended flywheel in gimbal mount - Test bench design and experimental validation

Dagnæs-Hansen

Santos

2019

Journal of Sound and Vibration

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Section: Housing and Rotormentioning

confidence: 99%

Magnetically suspended flywheel in gimbal mount - Test bench design and experimental validation

Dagnæs-Hansen

Santos

2019

Journal of Sound and Vibration

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“…A strong effect of the environment on the tribological characteristics of the friction pair is noted. The nonlinear dynamic behavior of a rigid rotor interacting with different types of support bearings has been studied [5]. The stability of the rotor at high speeds is considered in paper [6].…”

Section: Introductionmentioning

confidence: 99%

Improving the mechanical properties of zirconia in instrument bearings

Alisin

Diethelm²,

Kulebyakin

et al. 2020

MATEC Web Conf.

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The article presents the issues of replacing leucosapphires in jeweled bearings of the axes of precision instruments with nanostructured crystals of partially stabilized zirconia. The statement is substantiated that doping with rare earth elements provides an improvement in the performance properties of precision instruments by improving the mechanical properties of bearing materials. The efficiency of doping of zirconia crystals with cerium and neodymium oxides is studied. It was found that doped crystals have increased plasticity, which provides an increase in the crack resistance of crystals. Special attention is paid to the issues of increasing the survivability of high-speed rotor bearings by replacing the thrust bearing of leucosapphire with nanostructured crystals of partially stabilized zirconia doped with cerium and neodymium. The efficiency of improving the mechanical properties is confirmed by the X-ray phase analysis of crystals. The phase composition is studied by Raman scattering and the lattice parameters are determined. The increased crack resistance of the thrust bearing is confirmed by tests performed using the kinetic microhardness method.

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Experimental and Theoretical Comparison Between the Ball and Pinned Bearing Working as Backup Bearing for Magnetically Levitated Rotors

Fonseca

Weber

Santos³

2018

Mechanisms and Machine Science

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Experimental comparison of the nonlinear dynamic behavior of a rigid rotor interacting with two types of different radial backup bearings: Ball & pinned

Cited by 7 publications

References 15 publications

Magnetically suspended flywheel in gimbal mount - Test bench design and experimental validation

Magnetically suspended flywheel in gimbal mount - Test bench design and experimental validation

Improving the mechanical properties of zirconia in instrument bearings

Experimental and Theoretical Comparison Between the Ball and Pinned Bearing Working as Backup Bearing for Magnetically Levitated Rotors

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