In turbomachinery,the requirement of high efficiency has leaded to reduced clearances between rotating and stationary components.This increases the tendency of rotor-stator contact which plays an important role in rotating machinery potential failure or Emergency Shut-Down(ESD).The paper extends the previous published literature by considering the effect of different types of bearings on the rotor dynamic performance when rotor-stator rub interaction takes place.More insights of system stability are studied through numerical modeling.Based on the Finite Element Method(FEM),the dynamic performance of rotors supported by different types of bearings is investigated in this work while taking account of the effect of the rotating speed,clearances,and stiffness of stator as well as cross-coupled effect of the gas forces acting on disks or blades.The characteristic figures of system,such as poincaré section maps and shaft-center trajectories are used to evaluate the effect of the different types of bearings.The results of the research transpire that the rotor will exhibit a combination of synchronous,subsynchronous and supersynchronous vibration patterns under rotor-stator rub interaction conditions when the rotor is supported by either journal plain bearing or four-lobe journal bearings.The rotor exhibits mostly synchronous vibration patterns with those conditions when it is supported by four tilting pads bearing,five tilting pads bearing and elliptical bearings.Furthermore,experimental measurements were performed to investigate the rub of a rotor supported by tilting pad bearings due to contact with non-rotating component.This paper aims to narrow the gap between the theoretical research and real rotor-stator interaction phenomenon as seen in industrial turbomachinery.The results of this paper are useful in identifying and understanding this type of undesirable behavior in rotating machinery.