Complex model for fatigue damage development

A complex kinetic model of damage development under cyclic loading is proposed to describe the process of fatigue failure. Two criteria that imply different micro-crack development types are used in the model. A numerical method for calculating crack-like zones up to macro fracture is proposed. The...

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Main Authors: Nikitin, I. S., Burago, N. G., Nikitin, A. D., Stratula, B. A.
Format: Conference Proceeding
Language:English
Subjects:
Algorithms
Crack initiation
Crack propagation
Criteria
Cyclic loads
Damage
Fatigue cracks
Fatigue failure
Fracture mechanics
Mathematical models
Microcracks
Nucleation
Numerical methods
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creator Nikitin, I. S.
Burago, N. G.
Nikitin, A. D.
Stratula, B. A.
description A complex kinetic model of damage development under cyclic loading is proposed to describe the process of fatigue failure. Two criteria that imply different micro-crack development types are used in the model. A numerical method for calculating crack-like zones up to macro fracture is proposed. The results of numerical fatigue experiments are presented; the operability of the model and calculation algorithm is shown. It was shown that the presence of two criteria that use different types of crack nucleation may result in cases when one of the criteria leads to crack growth while the other one does not and vice versa. Under a complex stress state in the proposed complex model the natural implementation of any of the considered crack development mechanisms is possible. Cracks of different types may develop simultaneously in various parts of a specimen.
doi_str_mv 10.1063/5.0035517
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source American Institute of Physics:Jisc Collections:Transitional Journals Agreement 2021-23 (Reading list)
subjects Algorithms
Crack initiation
Crack propagation
Criteria
Cyclic loads
Damage
Fatigue cracks
Fatigue failure
Fracture mechanics
Mathematical models
Microcracks
Nucleation
Numerical methods
title Complex model for fatigue damage development
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