Feasibility and Performance Studies of a Semi Active Journal Bearing

Yogaraju, Raghu; Ravikumar, L.; Saravanakumar, G.; Shravankumar, C.; Kumar, Varun

doi:10.1016/j.protcy.2016.08.233

Cited by 9 publications

(2 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…SMA-ME has been used in many types of designs, such as helical springs [9][10][11][12][13], wires [14,15], and special designs [16]. For SMA-SE, the number of applications has also been growing lately-particularly, applications in helical springs [17][18][19], wires [2,[20][21][22][23], and special designs [24].…”

Section: Introductionmentioning

confidence: 99%

Passive Attenuation of Mechanical Vibrations with a Superelastic SMA Bending Springs: An Experimental Investigation

Senko

Almeida

Reis

et al. 2022

Sensors

View full text Add to dashboard Cite

This work presents an experimental study related to the mechanical performance of a special design spring fabricated with a superelastic shape memory alloy (SMA-SE). For the experimental testing, the spring was coupled in a rotor machine, aiming to attenuate the mechanical vibration when the system went through a natural frequency without any external power source. It was verified that the reduction in instabilities stemmed from the better distribution of vibration force in the proposed device, as well as the damping capacity of the spring material. These findings showed that the application of the M-Shape device of SMA-SE for three different cases could reduce vibration up to 23 dB when compared to the situations without, and with, 1.5 mm of preload. The M-Shape device was shown to be efficient in reducing the mechanical vibration in a rotor system. This was due to the damping capacity of the SMA-SE material, and because the application did not require any external source of energy to generate phase transformation.

show abstract

Section: Introductionmentioning

confidence: 99%

Passive Attenuation of Mechanical Vibrations with a Superelastic SMA Bending Springs: An Experimental Investigation

Senko

Almeida

Reis

et al. 2022

Sensors

View full text Add to dashboard Cite

show abstract

“…As an extended version of above mentioned paper, Enemark and Santos (2016a) presented a deeper analysis by comparing theoretical and experimental results proving, in terms of vibration suppression, the advantage of applying shape memory alloy to a rotor-bearing system. Yogaraju et al (2016), based on experimental studies, observed that shape memory alloy (SMA) can be used as a medium to apply necessary forces at identied locations to obtain the desired prole shapes for a multi-lobe bearing conguration facilitating the development of semiactive journal bearings. Finally, Yuan et al (2017) presented a very detailed review about actuators driven by shape memory alloy, more specically rotary actuator, highlighting its specicities and potentialities for new applications in the future.…”

Section: Introductionmentioning

confidence: 99%

Vibration control of a flexible rotor suspended by shape memory alloy wires

Alves

Steffen

Santos

et al. 2018

Journal of Intelligent Material Systems and Structures

View full text Add to dashboard Cite

 Users may download and print one copy of any publication from the public portal for the purpose of private study or research.  You may not further distribute the material or use it for any profit-making activity or commercial gain  You may freely distribute the URL identifying the publication in the public portal If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.

show abstract