Hybrid Friction - Impact Vibration Damper for Cryogenic Rotating Machinery

1997 ◽  
Vol 13 (4) ◽  
pp. 495-501 ◽  
Author(s):  
J. Jeffrey Moore ◽  
Alan B. Palazzolo ◽  
Ravindera K. Gadangi ◽  
Alford F. Kascak ◽  
Gerald Brown ◽  
...  
Keyword(s):  
Rotating Machinery ◽  
Vibration Damper ◽  
Impact Vibration

scholarly journals Technological potential of impact vibration damper of drill string with discrete working medium

2020 ◽  
Vol 1582 ◽  
pp. 012013
Author(s):  
A V Zagulyaev ◽  
K A Bashmur ◽  
E A Petrovsky ◽  
V S Tynchenko ◽  
N A Smirnov ◽  
...  
Keyword(s):  
Drill String ◽  
Vibration Damper ◽  
Technological Potential ◽  
Working Medium ◽  
Impact Vibration

Suppression of the Forward Rub in Rotating Machinery by an Asymmetrically Supported Guide

2011 ◽  
Vol 133 (2) ◽  
Author(s):  
Tsuyoshi Inoue ◽  
Yukio Ishida ◽  
Gao Fei ◽  
Hossain Md Zahid
Keyword(s):  
Theoretical Analysis ◽  
Contact Surface ◽  
Rotational Speed ◽  
Critical Speed ◽  
Rotating Machinery ◽  
Suppression Method ◽  
Lubricated Contact ◽  
Impact Vibration ◽  
Directional Difference ◽  
Rubbing Condition

In rotating machinery, rubbing occurs between the rotor and the stator, at the seal, between the rotor and the guide and between the rotor and the backup bearing. The backward rub or the partial impact vibration can be avoided by lubricating the contact surface sufficiently in order to decrease the friction. However, forward rub may still occur in such a case with a lubricated contact surface. Once such a forward rub occurs, it remains even if the rotational speed increases to much larger than the first bending critical speed and it is difficult to escape from this forward rubbing condition automatically. This paper proposes the suppression method of this forward rub by introducing the directional difference in the support stiffness of the guide or the backup bearing. The nonlinear theoretical analysis clarifies and explains the usefulness of the proposed method and it is also validated experimentally.

Electrical vibration damper

1982 ◽  
Vol 129 (5) ◽  
pp. 182 ◽  
Author(s):  
Hiroshi Kurokui ◽  
Michio Nakano
Keyword(s):  
Vibration Damper

Vibration damper-calibrator

2018 ◽  
pp. 39-43
Author(s):  
R.M. Bogomolov ◽  
◽  
D.Yu. Serikov ◽  
Keyword(s):  
Vibration Damper
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