VESTNIK of Samara University. Aerospace and Mechanical EngineeringVESTNIK of Samara University. Aerospace and Mechanical Engineering2542-04532541-7533Samara National Research University214710.18287/2541-7533-2012-0-3-2(34)-27-33UnknownA technique to estimate efficiency of turbine underplatform friction dampersNikhamkinM. S.<p>Doctor of Technical Sciences</p>
<p>Professor of Aircraft Engine Department</p>nikamkin@mail.ruSazhenkovN. A.<p>Postgraduate Student, Junior Research Assistant of Aircraft Engine Department</p>sazhenkov_na@mail.ruPerm National Research Polytechnic University02102012113-227331802201518022015Copyright © 2015, VESTNIK of the Samara State Aerospace University2015<p>An experimental technique is developed to estimate efficiency of turbine underplatform friction dampers usingthe scanning laser vibrometry method. Investigation is made for two turbine blades clamped on the massive block withunderplatform damper. The amplitude-frequency responses of the system are found and the damping characteristics tocentrifugal load correlation are obtained. A finite element technique based on explicit time integration scheme is developedto simulate interaction of blades and damper.</p>Gas turbin enginesturbine bladesvibration dampingГазотурбинные двигателилопатки турбиныдемпфирование колебаний