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  Journal Paper


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


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