The paper presents the procedure for calculating and predicting the state of critical structural elements in low-cycle fatigue with allowance for features of the operating conditions. The procedure is based on the nonlocalized damage concept and the allowance for the damage parameter in the system of constitutive equations using fast-rotating parts of laboratory centrifuges as an example. A macro- and microstructural analysis of the material is made, and the static and cyclic tests of the specimens of V95 (7075) aluminum alloy are carried out. The results of the experimental investigations are compared with the theoretical calculations performed based on the finite element method (the ANSYS software package).
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References
J. Strackeljan, M. Bobyr, and O. Khalimon, “Bauteillebensdauer beim zyklischen Kriechen mit der Berücksichtigung von Schadigungsprozessen,” in: 10. Magdeburger Maschinenbau-Tage (Sept. 27–29, 2011).
J. Strackeljan, M. Bobyr, and O. Khalimon, “Life prediction for structural elements in cyclic creep with allowance for damage,“ Vestn. NTTU “KPI.” Masinostr., No. 61, 66–75 (2011).
V. T. Troshchenko, A. A. Lebedev, V. A. Strizhalo, et al., Mechanical Behavior of Materials under Different Modes of Loading [in Russian], Logos, Kiev (2000).
L. M. Kachanov, “On creep rupture time,” Izv. AN SSSR. Otd. Tekhn. Nauk, No. 8, 26–31 (1958).
Yu. N. Rabotnov, Creep in Structural Elements [in Russian] Nauka, Moscow (1966).
A. Babenko and Ya. Lavrenko, “Determination of the stress-strain state of the cup of a laboratory centrifuge under the action of the dynamic loading,” Mashinoznavstvo, No. 7-8, 7–10 (2011).
Ya. M. Okhrimenko, Press-Forging Production Technology [in Russian], Mashinostroenie, Moscow (1976).
E. P. Unksov, State-of-the-Art of the Press-Forging Production [in Russian], Mashgiz, Moscow (1961).
N. A. Makhutov, Strain Criteria of Fracture and Strength Analysis of Structural Elements [in Russian], Mashinostroenie, Moscow (1981).
Ya. I. Lavrenko, “On the determination of the life of structural elements under alternating loads,” Visn. NTTU “KPI.” Mashinobud., Issue 56, 88–92 (2009).
J. Lemaitre and R. Desmorat, Engineering Damage Mechanics, Springer (2005).
J. Lemaitre, A Course on Damage Mechanics, Springer (1996).
G. S. Pysarenko (Ed.), Strength of Materials [in Russian], Vyshcha Shkola, Kiev (1986).
GOST 28785-90. Preparative Ultracentrifuges and Rotors. General Specifications and Test Methods [in Russian], Introduced on January 1, 1992.
GOSÒ 25.502-79. Methods for Mechanical Testing of Metals. Fatigue Test Methods [in Russian], Introduced on January 1, 1981.
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Translated from Problemy Prochnosti, No. 4, pp. 73 – 83, July – August, 2014.
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Bobyr’, N.I., Babenko, A.E., Lavrenko, Y.I. et al. Life of Structural Elements of Centrifuges with Allowance for Damage. Strength Mater 46, 503–511 (2014). https://doi.org/10.1007/s11223-014-9575-1
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DOI: https://doi.org/10.1007/s11223-014-9575-1