Dynamic fortes and stress analysis in the journal bearing system

Abstract EN

-This paper is concerned with a stress analysis in a bearing under unbalanced forces of the journal.

Some aspects of mathematical modeling of rotating structures were considered.

'Finite iilement Meihod" is formulated for modeling rotating structures.

As an application, a test rotor mounted on two-lobe hydrodynamic bearings in presented- Unbalance response fed dilations for various unbalance magnitudes are carried out iii the bearing location, The bearing coefficients were found at rotational speed of 4,000 rpm.

An accurate identification of bearing force parameters, i.e.

stifihiss and damping coefficients is presented by a classical linearized model.

The bearing support forces in flexible rotor-bearing systems are presented as a function of unbalance response of the journal.

The calculation of the be^-ring stress due to rotor unbalance are carried out using ANSYS Hie ANSVS program gives a good aids in understanding the stress analysis in the bearing under the action of journal rotation.