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Matematicheskoe modelirovanie, 2024, Volume 36, Number 3, Pages 3–19
DOI: https://doi.org/10.20948/mm-2024-03-01
(Mi mm4538)
 

Numerical modeling of fatigue fracture based on the nonlocal theory of cyclic damage

N. G. Buragoab, I. S. Nikitinb, A. D. Nikitinb, B. A. Stratulab

a Ishlinsky Institute for Problems in Mechanics of RAS
b Institute for Computer Aided Design of RAS, Moscow
References:
Abstract: Based on a multimode model of fatigue failure, a numerical method for calculating the kinetics of fracture, occurrence and development of fatigue “quasicracks” is proposed. For specimens with notches having different radii of curvature, processes of high-frequency cyclic tension-compression with different cycle asymmetry coefficients are considered. The convergence of numerical solutions for the processes of occurrence and development of quasicracks, as well as for durability, is ensured by the use of a nonlocal damage function near fracture zones. Computational experiments demonstrate the effectiveness of the developed numerical procedure. The results of calculations of fatigue failure are presented for various modes of cyclic loading with different cycle asymmetry coefficients and taking into account artificially caused defects.
Keywords: high-cycle fatigue, very-high-cycle fatigue, notched specimens, cyclic damage model, high-frequency tensile-compression tests, convergence of numerical solution, mesh refinement, non-local damage.
Funding agency Grant number
Russian Science Foundation 23-19-00640
Received: 16.11.2023
Revised: 26.11.2023
Accepted: 04.12.2023
English version:
Mathematical Models and Computer Simulations, 2024, Volume 16, Issue 5, Pages 655–666
DOI: https://doi.org/10.1134/S2070048224700297
Document Type: Article
Language: Russian
Citation: N. G. Burago, I. S. Nikitin, A. D. Nikitin, B. A. Stratula, “Numerical modeling of fatigue fracture based on the nonlocal theory of cyclic damage”, Mat. Model., 36:3 (2024), 3–19; Math. Models Comput. Simul., 16:5 (2024), 655–666
Citation in format AMSBIB
\Bibitem{BurNikNik24}
\by N.~G.~Burago, I.~S.~Nikitin, A.~D.~Nikitin, B.~A.~Stratula
\paper Numerical modeling of fatigue fracture based on the nonlocal theory of cyclic damage
\jour Mat. Model.
\yr 2024
\vol 36
\issue 3
\pages 3--19
\mathnet{http://mi.mathnet.ru/mm4538}
\crossref{https://doi.org/10.20948/mm-2024-03-01}
\transl
\jour Math. Models Comput. Simul.
\yr 2024
\vol 16
\issue 5
\pages 655--666
\crossref{https://doi.org/10.1134/S2070048224700297}
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    Математическое моделирование
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    References:31
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