Studying of Manufacturing Tolerance Influence on the Performance of GTE Rotor Elastic Rings

The article considers the influence of different tolerance values on squeeze film damper elastic rings stiffness. This type of damper is widely used in gas turbine engines supports. Nevertheless, modern analytical solutions have a number of limitations: missing of slipping and friction effects, different tolerance variations, interaction of two inserted into each other elastic rings. Have been prepared the parametric finite element model of elastic ring, set of two interconnected elastic rings and the simplified segment model. Attained results show different disalignment for different models comparing with different analytical approaches. The effect of tolerance on flexibility value is considered.