Procedure of the updated calculations of disks of aero – engines with removable blades a finite element method in three – dimensional statement in the environment of Femap/Nastran




the aircraft engine disc; rated model; a contact problem; stress concentration; a technique


Problematic. At adaptation of a design of discs of rotor of air gas-turbine drives (GTD) it is necessary to conduct, in particular, strength calculations for what to create the computer models corresponding to stated designs (delineations) and operation conditions. If creation of a geometrical part of model does not call special difficulties the algorithm of creation of an is finite-element grid models for carrying out of calculations of performances of the disc stress-strain conditions (SSC) with blades can be modified taking into account development of programs for calculate.

Research objective. To offer the algorithms allowing with the set exactitude to calculate performance of the SSC of discs with blades on personal computers, and also to represent outcomes in the form of schedules of type "surface".

Realization technique. On an example of the disc of 2nd stage of the compressor of GTD the algorithm of construction of a three-dimensional is finite-element grid of the disc of GTD from the separate blocks which have been "pasted together" in a unified grid has been created. Numerical calculations (a contact problem of thermoelasticity, isotropic materials) are carried out. For preparation of construction of schedules of type "surface" the interface program of transformation of the table of columns in the two-dimensional table is created.

The results of research. Are created and explicitly techniques of reaching of research objectives are described.

Conclusions. The created techniques allow to carry out on the limited computer powers exact enough control calculations of discs with blades in three-dimensional statement, to conduct visualisation of distribution of stresses and contact forces of a zone of a contact "disc-blades" in the form of schedules of type "surface".


N.G. Burago, A.B. Zhuravlev, I.S. Nikitin, “The analysis of a state of stress of contact system “disc-blades” of the gas-turbine engine”, Vychislitel'naya mekhanika sploshnykh sred, Vol. 4, No. 2, pp. 5–16, 2011. doi: 10.7242/1999-6691/2011.4.2.11

I.A. Birger, Raschet na prochnost' aviatsionnykh GTD. Moskow, Russia, Mashinostroenie, 1984

Y Nakamura, S. Takakhasi, “The analysis of stresses arising under the influence of centrifugal forces in type connection “a tail of a swallow”, Nikhon kikai gakkai rombunsyu, t. A51, No. 466, pp. 1620–1630, 1985.

D.V. Khronin, Design and designing of air gas-turbine engines, Moskow, Russia: Mashinostroenie, 1989.

G.S. Skubachevskii, Aviation gas-turbine engines, design and calculation of details. 8 ed., Mashinostroenie, Moskow, Russia. 1996.

Yu.S. Vorob'ev, “Problems of the numerical analysis of rotor machines with blades”, in Proc. Dinamika rotornykh sys-tem, Kamenets-Podol'skii, Ukraine, pp. 89–91, 1996.

A.A. Inozemtsev, V.L. Sandratskii, Gas-turbine engines, OAO “Aviadvigatel”, Perm', Russia, 2006.

V.P Danil'chenko et al., Designing of air gas-turbine engines. The monography, SPTs RAN, Samara, Russia, 2008.

M.P. Boyce, “Gas turbine engineering handbook”, Butterworth-Heinemann, Elsevier, Amsterdam, Boston, XXXIV, 2012

T.O. Vale, G.C. Villar, J.C. and Menezes, “Methodology for Structural Integrity Analysis of Gas Turbine Blades”, Jour-nal of Aerospace Technology and Management, No. 4 (1), pp. 51–60, 2012. doi: 10.5028/jatm.2012.04014311

L. Witek, “Numerical simulation of fatigue fracture of the turbine disc”, Fatigue of Aircraft Structures, Vol. 1, pp. 114–122, 2013. doi: 10.2478/v10164-012-0063-4

V.S. Chigrin, Design and strength of aero-engines, AO "Motor Sich", KhAI, Zaporozh'e, Khar'kov, Ukraine, 2017.

K.N. Rudakov and Shakib Khamed, “Working out of a technique of calculations of discs of gas-turbine engines by a method of finite-elements in three-dimensional statement”, Vestnik NTUU “KPI”. Serija mashinostroenie, No.53, pp. 88–95, 2008.

K. Rudakov and A. Shandura, “Numeral Ground of Application of mixed 3D-Modeley Composites at Computations of Bolted Joints”, Journal of Mechanical Engineering NTUU “Kyiv Polytechnic Institute”, No. 2(74), pp. 67–76. 2015.

Y.N. Dyfuchyn, and K.N. Rudakov, “Numerical Modelling of Bolted Joints from Composite. The Message 1. Creation of the Mixed 3D-Models”, Journal of Mechanical Engineering NTUU “Kyiv Polytechnic Institute”, No. 2(77), pp. 100–107, 2016. doi: 10.20535/2305‐9001.2016.77.76975.

K.N. Rudakov, FEMAP 10.2.0. Geometricheskoe i konechno-elementnoe modelirovanie konstruktsii [FEMAP 10.2.0. Geometrical and FEM of designs], Kyiv, Ukraine, 2011. [Online]. Available:

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