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Calculation of a safety factor of damaged composite main rotor blade according to limit equilibrium theory

  • Structural Mechanics and Strength of Flight Vehicles
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Abstract

Safety factors of the Ansat helicopter main rotor blade are determined in the root section at various flight modes with taking into account the possible damages.

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References

  1. Gorelov, A.V. and Sidorov, I.N., A Lower Bound Estimate of the Critical Load for Helicopter Main Rotor Composite Blade According to the Limit Equilibrium Theory. The Basic Steps of an Algorithm, Izv. Vuz. Av. Tekhnika, 2011, vol. 54, no. 3, pp. 3–8 [Russian Aeronautics (Engl. Transl.), vol. 54, no. 3, pp. 233–241].

    Google Scholar 

  2. Gorelov, A.V. and Sidorov, I.N., A Lower Bound Estimate of the Critical Load for Helicopter Main Rotor Composite Blade According to the Limit Equilibrium Theory. Analysis Results, Izv. Vuz. Av. Tekhnika, 2011, vol. 54, no. 4, pp. 12–14 [Russian Aeronautics (Engl. Transl.), vol. 54, no. 4, pp. 341–345].

    Google Scholar 

  3. Kayumov, R.A., Method of Elastic Characteristic Variation in the Problem of a Limiting Load, Prikladnaya Mekhanika i Tekhnicheskaya Fizika, 1990, vol. 31, no. 3, pp. 134–139 [Journal of Applied Mechanics and Technical Physics (Engl. Transl.), vol. 31, no. 3, pp. 469–473].

    Google Scholar 

  4. Kayumov, R.A., A Method for Two-Sided Limiting Load Estimation, Problemy Prochnosti, 1992, vol. 24, no. 1, pp. 51–55 [Strength of Materials (Engl. Transl.), vol. 24, no. 1, pp. 64–70].

    Google Scholar 

  5. Kayumov, R.A., Estimate of the Carrying Capacity of Structures under Arbitrary Flow Conditions, Prikladnaya Mekhanika i Tekhnicheskaya Fizika, 1993, vol. 34, no. 1, pp. 115–120 [Journal of Applied Mechanics and Technical Physics (Engl. Transl.), vol. 34, no. 3, pp. 111–116].

    MathSciNet  MATH  Google Scholar 

  6. Teregulov, I.G., Kayumov, R.A., and Sibgatullin E.S., Raschet konstruktsii po teorii predel’nogo ravnovesiya (Analysis of Structures According to the Limit Equilibrium Theory), Kazan: Fen, 2003.

    Google Scholar 

  7. Dunai, O.O., Denisov, Yu.A., and Sidorov, I.N., Experimental Study of Damping Properties of a Composite Torsion Bar in the Helicopter Main Rotor Hingeless Hub, Izv. Vuz. Av. Tekhnika, 2009, vol. 52, no 3, pp. 3–4 [Russian Aeronautics (Engl. Transl.), vol. 52, no. 3, pp. 259–263].

    Google Scholar 

  8. Kostin, V.A., Mikhailov, S.A., Nikolaev, E.I., and Gerasimov, A.I., Adjustment of Elasticity Characteristics of a Composite Elastic Hub of Helicopter Main Rotor for a Range of Operational Temperature Conditions, Izv. Vuz. Av. Tekhnika, 2011, vol. 54, no. 3. pp. 9–12, [Russian Aeronautics (Engl. Transl.), vol. 54, no. 3, pp. 242–246].

    Google Scholar 

  9. Shen, W.Q., Interaction Yield Hypersurfaces for the Plastic Behaviour of Beams. I. Combining Bending, Tension and Shear, Int. J. Mech. Sci., 1995, vol. 37, no. 3, pp. 221–238.

    Article  MATH  Google Scholar 

  10. Shen, W.Q., Interaction Yield Hypersurfaces for the Plastic Behaviour of Beams. II. Combining Bending, Tension, Shear and Torsion, Int. J. Mech. Sci., 1995, vol. 37, no. 3, pp. 239–247.

    Article  Google Scholar 

  11. Sibgatullin, K.E., Sibgatullin, E.S., and Timergaliev, S.N, Prognostication of Durability of the Cores Entering in the Design of the Load-Carrying System of Kamaz Truck, Izv. TulGU. Tekhn. Nauki, 2010, no. 4-2, pp. 153–160.

    Google Scholar 

  12. Sibgatullin, K.E., Sibgatullin, E.S., and Shibakov, V.G., Estimation of Limiting Load-Carrying Capacity of Bearing System of KAMAZ 65115 Dumper, Perspektivy nauki, 2010, vol. 13, no. 11, pp. 64–73.

    Google Scholar 

  13. Sibgatullin, K.E. and Sibgatullin, E.S., Estimate of Strength of Anisotropic Bars of Arbitrary Cross Section in the General Case of their Combined Stress, Izv. Akad. Nauk. Mekh. Tv. Tela, 2010, no. 1, pp. 84–92 [Mechanics of Solids (Engl. Transl.), vol. 45, no. 1, pp. 67–73].

    Google Scholar 

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Correspondence to A. V. Gorelov.

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Original Russian Text © A.V. Gorelov, E.I. Nikolaev, I.N. Sidorov, 2016, published in Izvestiya Vysshikh Uchebnykh Zavedenii, Aviatsionnaya Tekhnika, 2016, No. 3, pp. 13–19.

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Gorelov, A.V., Nikolaev, E.I. & Sidorov, I.N. Calculation of a safety factor of damaged composite main rotor blade according to limit equilibrium theory. Russ. Aeronaut. 59, 308–315 (2016). https://doi.org/10.3103/S106879981603003X

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  • DOI: https://doi.org/10.3103/S106879981603003X

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