Аналитические и численные модели гидродинамических демпферов опор роторов газотурбинных двигателей (Analytical and numerical models analysis of squeeze film da

Abstract

The object of the investigation is a squeeze film damper incorporated into gasturbine engine rotor support.The subject of the project is the investigation of a squeeze film damperincorporated into gas turbine engine rotor support.The aim of the work is to determine the circumferential oscillation pressuredistribution in squeeze film damper analytically and numerically and also to ascertainthe damping factor by employing numerical and experimental methods.During the work the following tasks have been solved:1) Accomplished analysis of dependency of dimensionless pressuredistributions obtained analytically and in comparison with the numerical models.2) Created a model of SFD in the CAE software for the fluid structureinteraction task.3) Accomplished series of tests to define the experimental value of dampingcoefficient for the SFD with elastic rings.4) Defined test parameters limits for the correct processing of data5) Created a methodology for the SFD with elastic ring damping factor test.6) De