VESTNIK of Samara University. Aerospace and Mechanical EngineeringVESTNIK of Samara University. Aerospace and Mechanical Engineering2542-04532541-7533Samara National Research University1001410.18287/2541-7533-2021-20-4-69-78Research ArticleDetermining static stiffness of damper elastic ringsDiligenskyD. S.<p>Assistant Lecturer, Department of Engineering Graphics</p>diligen@mail.ruhttps://orcid.org/0000-0002-5788-0120NovikovD. K.<p>Doctor of Science (Engineering), Professor, Department of Aircraft Engine Construction and Design</p>novikovdk_ssau@mail.ruBoyarovK. V.<p>Engineer of the Industrial Research Laboratory of Vibration Strength and Reliability of Aviation Products</p>konst90@gmail.comSamara National Research University1901202220469781801202218012022Copyright © 2022, VESTNIK of Samara University. Aerospace and Mechanical Engineering2022<p>The article describes a method for experimental evaluation of the stiffness of an elastic damper ring. A thin-walled low-stiffness ring with uniformly distributed smooth protrusions on the inner and outer surfaces acts as a damper ring. Despite the widespread use of such a design in domestic and foreign mechanical engineering, control of the characteristics of this element and, accordingly, of the support as a whole remains quite difficult. A numerical model was developed, the reliability of which is confirmed by analytical calculations. To check the data obtained by numerical calculations, a special device was designed, which was installed on the galdabini tensile testing machine, where a series of measurements was carried out. Analysis of the data obtained showed a significant difference between the numerical, analytical and experimental data, which can be explained by the discrepancy between the equipment used and the boundary conditions of the theoretical model. The parameters of the device were selected in such a way that its rigidity was much higher than the rigidity of the elastic ring under study. The paper describes the improvement of both the design of the device and the method for determining the stiffness of the elastic ring of the damper using the specified measuring equipment. After making corrections, the obtained data on the scatter of the stiffness of the elastic ring are in good agreement with the analytical and numerical dependence, which makes it possible to use the data of the latter to refine the analytical methods in the future</p>Elastic ringstiffnessdamperhysteresisload cellanisotropyУпругое кольцожёсткостьдемпфергистерезистензодатчиканизотропия[Novikov D.K., Diligensky D.S. Hydrodynamic damper design analysis. Sbornik trudov Mezhdunarodnogo nauchno-tekhnicheskogo foruma, posvyashchennogo 100-letiyu OAO «Kuznetsov» i 70-letiyu SGAU (September, 5-7, 2012, Samara). V. 2. Mezhdunarodnaya nauchno-tekhnicheskaya konferentsiya s uchastiem molodykh uchenykh «Dinamika i Vibroakustika Mashin». Samara: Samara State Aerospace University Publ., 2012. P. 47-48. (In Russ.)][OST 1 10778-72, OST 1 10779-72. Elastic rings of gas turbine engine supports. Design and sizes. 1972. 11 p. (In Russ.)][Khronin D.V., Leont'ev M.K., Borzdyko E.V. Konstruktsiya i proektirovanie uprugodempfernykh opor rotorov VRD: ucheb. posobie [Construction and design of GTE rotor elastic-damping supports: textbook]. Moscow: Moscow Aviation Institute Publ., 1988. 37 p.][Artemov E.A. Experimental and calculation defining of turbomachinery elastic supports flexibility. Soviet Aeronautics. 1965. No. 2. P. 48-55. (In Russ.)][Lobanov V.K., Khrustalev A.B. Otsenka dempfiruyushchikh svoystv odnogo tipa uprugikh opor GTD. V sb.: «Vibratsionnaya Prochnost' i Nadezhnost' Dvigateley i Sistem Letatel'nykh Apparatov». Vyp. 4. Kuybyshev: Kuybyshev Aviation Institute Publ., 1977. (In Russ.)][Sergeev S.I. Dempfirovanie mekhanicheskikh kolebaniy [Damping of mechanical vibrations]. Moscow: Fizmatgiz Publ., 1959. 408 p.][Leontiev M.K., Tereshko A.G. Investigation of characteristics of elastic rings mounted in rotor bearings of gas-turbine engines. Aerospace MAI Journal. 2011. V. 18, no. 3. P. 135-146. (In Russ.)][Diligensky D.S., Novikov D.K. Influence of assembly conditions on the stressed-stained state of damper support elastic rings. Vestnik of Samara University. Aerospace and Mechanical Engineering. 2017. V. 16, no. 1. P. 87-100. (In Russ.). DOI: 10.18287/2541-7533-2017-16-1-87-100][Diligenskii D.S., Novikov D.K., Pechenin V.A., Bolotov M.A. Designing a technique for estimating press fit parameters of elastic rings for a rotor bearing damper. Journal of Machinery Manufacture and Reliability. 2020. V. 49, Iss. 7. P. 618-623. DOI: 10.3103/S1052618820070067]