Model for evaluating the end runouts of a rotor with parallel connections of parts


Cite item

Abstract

The existing methods for calculating the assembly dimensional chains of aircraft engine rotors are analyzed. The factors that have a significant impact on the reliability of the calculation of the controlled assembly parameters of the product are identified. One of these factors is the existence of parallel connections of parts in the rotor. In the drum & disk rotors, parallel rotor connections are formed by mating their parts along several end surfaces in the axial direction. A mathematical model is proposed that allows taking into account the parallel connections of the rotor parts. The form of relationship between rotor end run-outs and amplitudes of deviations of the shape of the mating surfaces of the parts and their angular positions in the unit is determined. The determined dependence includes many coefficients that allow taking into account the amplitudes of deviations of the shape of the mating surfaces, parallel connections of parts in the rotor, and their angular position. Determination of dependence coefficients’ values is solved as a problem of regression analysis. The initial data for obtaining the dependence are formed using the developed parameterized finite element model (FEM) of a part of the rotor of an aircraft engine high-pressure compressor (HPC). The results of research of end run-outs of control surfaces of disks of the considered HPC rotor assembly part are presented. The values of the dependence coefficients for assessing the end run-outs of the rotor are determined.

About the authors

I. A. Grachev

Samara National Research University

Author for correspondence.
Email: grachmalek2602@gmail.com

Postgraduate Student of the Department of Engine Production Technology

Russian Federation

E. V. Kudashov

Samara National Research University

Email: KEV-fantom@yandex.ru

Postgraduate Student of the Department of Engine Production Technology

Russian Federation

M. A. Bolotov

Samara National Research University

Email: maikl.bol@gmail.com

Candidate of Science(Engineering), Associate Professor of the Department of Engine Production Technology

Russian Federation

N. D. Pronichev

Samara National Research University

Email: pronichev2008@rambler.ru

Candidate of Science(Engineering), Associate Professor of the Department of Engine Production Technology

Russian Federation

References

  1. Nepomiluev V.V. Razrabotka tekhnologicheskikh osnov obespecheniya kachestva sborki vysokotochnykh uzlov gazoturbinnykh dvigateley. Diss. … d-ra tech. nauk [Development of background technology for assuring the quality of assembling high-precision parts of gas turbine engines. Doctoral dissertation (Engineering)]. Rybinsk, 2000. 356 p.
  2. Bez"yazychnyy V.F., Nepomiluev V.V., Semenov A.N. Obespechenie kachestva izdeliy pri sborke [Product quality assurance in assembling]. Moscow: Spektr Publ., 2012. 203 p.
  3. Kravchenko I.F., Kondratyuk E.V., Titov V.A., Filimonikhin G.B., Peychev G.I., Kachan A.Ya. Sborka rotorov GTD barabanno-diskovogo tipa: tipovye protsessy, algoritmy raschetov [Assembling gas turbine engine drum-and-disk rotors: standard practices, calculation algorithms]. Kiev: KVITs Publ., 2011. 198 p.
  4. Il'ina M.E. Method of controlling the process of assembling a gas turbine engine disk rotor. Izvestiya Volgogradskogo Gosudarstvennogo Tekhnicheskogo Universiteta. 2006. No. 2. P. 25-27. (In Russ.)
  5. Chase K.W., Greenwood W.H. Design issues in mechanical tolerance analysis. Manufacturing Review. 1988. V. 1, Iss. 1. P. 50-59.
  6. Qureshi A.J., Dantan J.-Y., Sabri V., Beaucaire P., Gayton N. A statistical tolerance analysis approach for over-constrained mechanism based on optimization and Monte Carlo simulation. Computer-Aided Design. 2012. V. 44, Iss. 2. P. 132-142. doi: 10.1016/j.cad.2011.10.004
  7. Grandjean J., Ledoux Y., Samper S. On the role of form defects in assemblies subject to local deformations and mechanical loads. The International Journal of Advanced Manufacturing Technology. 2013. V. 65, Iss. 9-12. P. 1769-1778. doi: 10.1007/s00170-012-4298-6
  8. Ballu A., Mathieu L., Dantan J.-Y. Global view of geometrical specifications. In book: «Geometric Product Specification and Verification: Integration of Functionality». Dordrecht: Springer, 2003. P. 13-24. doi: 10.1007/978-94-017-1691-8_2
  9. Chase K.W., Parkinson A.R. A survey of research in the application of tolerance analysis to the design of mechanical assemblies. Research in Engineering Design. 1991. V. 3, Iss. 1. P. 23-37. doi: 10.1007/bf01580066
  10. Nigam S.D., Turner J.U. Review of statistical approaches to tolerance analysis. Computer-Aided Design. 1995. V. 27, Iss. 1. P. 6-15. doi: 10.1016/0010-4485(95)90748-5
  11. Roy U., Liu C.R., Woo T.C. Review of dimensioning and tolerancing: representation and processing. Computer-aided design. 1991. V. 23, Iss. 7. С. 466-483. doi: 10.1016/0010-4485(91)90045-x
  12. Srinivasan V. An integrated view of geometrical specification and verification. In book: «Geometric Product Specification and Verification: Integration of Functionality». Dordrecht: Springer, 2003. P. 1-11. doi: 10.1007/978-94-017-1691-8_1
  13. Voelcker H.B. The current state of affairs in dimensional tolerancing: 1997. Integrated Manufacturing Systems. 1998. V. 9, Iss. 4. P. 205-217. doi: 10.1108/09576069810217793
  14. Kargapol'tsev S.K. Ostatochnye deformatsii pri frezerovanii malozhestkikh detaley s podkrepleniem [Residual deformations in milling low-rigidity stiffened parts]. Irkutsk: Vostochno-Sibirskiy Institut MVD Rossiyskoy Federatsii Publ., 1999. 136 p.
  15. Huang W., Ceglarek D. Mode-based decomposition of part form error by discrete-cosine-transform with implementation to assembly and stamping system with compliant parts. CIRP Annals. 2002. V. 51, Iss. 1. P. 21-26. doi: 10.1016/S0007-8506(07)61457-7
  16. Formosa F., Samper S. Modal expression of form defects. In book: «Models for Computer Aided Tolerancing in Design and Manufacturing». Dordrecht: Springer, 2007. P. 13-22. doi: 10.1007/1-4020-5438-6_3
  17. Samper S., Formosa F. Form defects tolerancing by natural modes analysis. Journal of Computing and Information Science in Engineering. 2007. V. 7, Iss. 1. P. 44-51. doi: 10.1115/1.2424247
  18. Yanlong C., Bo L., Xuefeng Y., Jiayan G., Jiangxin Y. Geometrical simulation of multiscale toleranced surface with consideration of the tolerancing principle. Journal of Computing and Information Science in Engineering. 2015. V. 15, Iss. 2. doi: 10.1115/1.4028962

Copyright (c) 2021 VESTNIK of Samara University. Aerospace and Mechanical Engineering

Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

This website uses cookies

You consent to our cookies if you continue to use our website.

About Cookies