Paper Title :Design, Development and Analysis of Squeeze Film Dampers For High Speed Machines
Author :L.Rasidhar, Aaditya Vikas Rawat, Sai Ankit Tripathi, Sk.Roshan Zameer
Article Citation :L.Rasidhar ,Aaditya Vikas Rawat ,Sai Ankit Tripathi ,Sk.Roshan Zameer ,
(2017 ) " Design, Development and Analysis of Squeeze Film Dampers For High Speed Machines " ,
International Journal of Mechanical and Production Engineering (IJMPE) ,
pp. 6-10,
Volume-5,Issue-1
Abstract : Present day state of the art in the design of turbo machines has given much scope to the flexible rotor bearing
system. The most recurring problem in rotor dynamics is the excessive steady state synchronous vibration levels. Squeeze
film dampers (SFD) are the essential components of high-speed turbo machines since they offer the advantage of dissipation
of vibration energy and hence prevent rotor dynamic instabilities. A squeeze film damper is used between the bearing and its
foundation to reduce the unbalance forces transmitted to the pedestal by introducing an additional damping and thereby
reduce the amplitude of vibration to acceptable limit. This work highlights the design and development of squeeze film
dampers for high-speed machines in a more generic way. The first phase of the work involves the study of the effect of SFD
on rotor dynamics based on the parameters like, Damping ratio, Logarithmic decrement and Transmissibility. A theoretical
model is generated incorporating the said parameters. The dynamic analysis, which is of two fold, is carried by using the
ARMD software. The rotor dynamic effects are found without SFD and with SFD. The second phase of the work deals with
experimental investigation on a journal-bearing test rig as shown in figure with SFD supports up to a speed of 1800 rpm. At
the end, the vibrations obtained through theoretical analysis and experimental investigations are tabulated. It is concluded
that vibration levels are reduced by using SFD for the specified optimum inputs.
Keywords- Squeeze film dampers, Damping ratio, Logarithmic decrement and Transmissibility
Type : Research paper
Published : Volume-5,Issue-1
DOIONLINE NO - IJMPE-IRAJ-DOIONLINE-6750
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Copyright: © Institute of Research and Journals
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Published on 2017-03-09 |
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