Reducing blade-stator contact in a rotordynamics system supported by oil-film bearings

Contact occurrence in a bladed rotor dynamic system due tounwanted vibrations produced by eccentricity force is oneof the most probable and undesirable phenomena. In thispaper a Jeffcott rotor supported by journal bearings at bothend and equipped with rigid blades is taken into account.The rotational speed is taken as control parameter. In orderto reduce the vibrations of the system with purpose ofcontact elimination, TMD and NES as passive absorbers areutilized. Then through an optimization process with the helpof complex averaging method, the optimum parameters foreach absorber is provided.

کلیدواژه ها:

Bladed rotor ، contact ، TMD ، NES