A test rig for the identification of the dynamic coefficients of tilting pad journal bearings is currently under construction. The present work aims at assessing the accuracy of prospect tests. A dynamic lumped model of the test cell has been developed to include a number of possible sources of systematic errors. Virtual tests can be run on this model to evaluate the errors. The lumped model, implemented in MATLAB, is based on reduced stiffness and mass matrices obtained by finite element analysis (in ANSYS) using the Component Modal Synthesis method. The deformation of the housing ring into a roughly elliptic shape was found to be critical and suggested a stiffening design intervention.
PROVE DI IDENTIFICAZIONE DEI COEFFICIENTI DINAMICI DI CUSCINETTI A PATTINI OSCILLANTI SU BANCO PROVA VIRTUALE
SABA, DIEGO;CIULLI, ENRICO;FORTE, PAOLA;MATTEI, LORENZA;
2015-01-01
Abstract
A test rig for the identification of the dynamic coefficients of tilting pad journal bearings is currently under construction. The present work aims at assessing the accuracy of prospect tests. A dynamic lumped model of the test cell has been developed to include a number of possible sources of systematic errors. Virtual tests can be run on this model to evaluate the errors. The lumped model, implemented in MATLAB, is based on reduced stiffness and mass matrices obtained by finite element analysis (in ANSYS) using the Component Modal Synthesis method. The deformation of the housing ring into a roughly elliptic shape was found to be critical and suggested a stiffening design intervention.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
