Call For Paper Volume:4 Issue:10 Oct'2017 |

TRANSDUCER MASS LOADING EFFECT ON IDENTIFICATION OF JOINT STIFFNESS PARAMETER

Publication Date : 28/02/2015



Author(s) :

Dr.Sanjay B.Ingole , Kanchan S.Ingole.


Volume/Issue :
Volume 2
,
Issue 2
(02 - 2015)



Abstract :

The quality of measured frequency response functions (FRFs) is adversely affected by many factors, most significant sources being noise and systematic errors. It is also known that the accuracy and the reliability of various analyses using the measured FRFs depend strongly on the quality of measured data. This paper aims to remove one of the major systematic errors in measured FRFs, namely the mass loading effects of transducers. Sherman–Morrison identity has been used for the elimination of mass loading effects of transducers from measured FRFs. The eigenvalues are estimated from corrected FRF’s. The parameters describing the dynamic behavior of supports, bearings and joints are usually not well known. The dynamic model of the system may be affected much more by the usual simplifications of bearings and joints than by slight errors in geometry, mass and stiffness distribution in its main components. This leads to the correction of mathematical model of real systems via identification of local parameters which in this paper limited to joint stiffness parameter. The joint parameters are estimated from corrected eigenvalues; a well known method suggested by U.Pabst and P.Hagedorn has been used for parameter estimation.


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TRANSDUCER MASS LOADING EFFECT ON IDENTIFICATION OF JOINT STIFFNESS PARAMETER

February 24, 2015