A mechanical tension-resistant device for lead rubber bearings

Hu, Kai; Zhou, Ying; Jiang, Li; Chen, Peng; Qu, Ge

doi:10.1016/j.engstruct.2017.09.006

Cited by 22 publications

(5 citation statements)

References 15 publications

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“…Active magnetic bearing (AMB) is a new type of bearing that achieves stable rotor suspension by controllable electromagnetic force. It has several advantages such as no contact, no lubrication, no wear, high rotational speed, and adjustable dynamic characteristics [1]. Rotors supported by electromagnetic bearings are well-suited for extreme environments, such as high-speed and vacuum.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Response Analysis of a Magnetically Suspended Dual-Rotor System Considering the Uncertainty of Interference-Fit Value

Wang,

Tao,

Liu

et al. 2024

Actuators

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Interference fit is often used in rotating machinery to transmit torque and force. The actual interference value is uncertain due to factors such as manufacturing errors and operating conditions, resulting in a gap between the response of the system and theoretical results. Therefore, the interval method is used to study the magnetically suspended dual-rotor system (MSDS) with uncertainty of interference-fit value. Firstly, a theoretical model of the MSDS was established using the finite element method, and the influence mechanism of the interference value on the rotor bending stiffness was derived. Then, the rotor stiffness range was obtained from the uncertain range of interference value. Finally, the dynamic response of the MSDS was studied based on the Chebyshev interval method. The research results indicate that the uncertainty of interference value has an effect on the vibration response of the MSDS. The vibration response of the system is most affected near the first-order bending critical speed, and the effect on rotor response is relatively small in other angular speed regions. The research results can provide a basis for the design of rotor systems.

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Section: Introductionmentioning

confidence: 99%

Dynamic Response Analysis of a Magnetically Suspended Dual-Rotor System Considering the Uncertainty of Interference-Fit Value

Wang,

Tao,

Liu

et al. 2024

Actuators

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“…Zhou et al investigated the straight-groove or spiral-channel Stribeck curve of WLRB with NR material in a comparison experiment using the rotational speed and external load as variables and found that the friction coefficient of straight-groove WLRB decreased with an increase in the load over the entire speed range [3]. Hu et al developed a mechanical stress-resistant device for rubber bearings [4]. Ouyang et al conducted an experimental study of the dynamic performance of water-lubricated rubber bearings in mixed lubrication [5].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of the Performance of SBR and RSS Materials as a Sliding Bearing Element

ÇALIŞKAN

2022

Crystals

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Conventional bearing systems and materials, which are important components of machine elements, have often failed to fulfil requirements, especially in places where sealing is required. In such cases, sliding bearings with PTFE- and NBR-based polymer and elastomer materials operating in water or oil are preferred. In this study, the performance of two alternative rubber-based materials, synthetic styrene butadiene rubber (SBR) and natural rubber smoked sheet (RSS), as a sliding bearing was experimentally investigated in terms of frictional resistance using pin-on-disc and pin-on-cylinder devices. In the study, very low friction forces emerged at low sliding speeds compared to PTFE and NR operating in water. The friction force values and friction coefficients obtained are presented in diagrams and tables.

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“…Since the first application of isolation base technology in 1909, the rubber isolation bearing has been widely used in seismic protection systems because of its significant effect on improving the seismic resistance ability of buildings and constructions. 1,2 Meanwhile, long-term and real-time monitoring for the structural health of rubber isolation bearing is important to ensure the anti-seismic property and service safety of building structures. However, the traditional sensors with high brittleness, weak damage resistance, high maintenance cost, low service life, poor durability, and especially small strain range (*5%) [3][4][5] are not appropriate for the large deformable rubber isolation bearing.…”

Section: Introductionmentioning

confidence: 99%

Resistance-strain sensitive rubber composites filled by multiwalled carbon nanotubes for structuraldeformation monitoring

Liu

Guo

Lin

et al. 2021

Nanomaterials and Nanotechnology

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In this article, multiwalled carbon nanotube/natural rubber composites with resistance-strain sensitivity were prepared by solution method, when the electrical percolation threshold of multiwalled carbon nanotube is only ∼3.5 wt%. The mechanical properties and resistance-strain response sensitivity were studied and analyzed systematically. The dispersion of multiwalled carbon nanotubes in the natural rubber matrix was characterized by field-emission scanning electron microscope and X-ray diffractometer. The composite exhibits good deformation sensitivity (gauge factor >27), large strain sensing range (>200%), and high signal stability when multiwalled carbon nanotube content was appropriate. The composite is suited to application in strain monitoring of large deformation structures since the resistance-strain response is more stable when strain exceeds 100%. To understand the mechanism of the resistance-strain response, the ‘shoulder peak’ of resistance-strain curve was researched and explained by the digital image correlation method, and an analytical model was developed when considering the effects of electronic tunneling and hopping in multiwalled carbon nanotube networks. Both experiment and analytical results confirm the break-restructure process of multiwalled carbon nanotube networks under applied strain cause the resistance-strain response. Finally, the practical application of the composite to monitoring strain load of rubber isolation bearing was realized.

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A mechanical tension-resistant device for lead rubber bearings

Cited by 22 publications

References 15 publications

Dynamic Response Analysis of a Magnetically Suspended Dual-Rotor System Considering the Uncertainty of Interference-Fit Value

Dynamic Response Analysis of a Magnetically Suspended Dual-Rotor System Considering the Uncertainty of Interference-Fit Value

Experimental Investigation of the Performance of SBR and RSS Materials as a Sliding Bearing Element

Resistance-strain sensitive rubber composites filled by multiwalled carbon nanotubes for structuraldeformation monitoring

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