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Ductile Crack Growth Modeling under Low Cycle Fatigue Loading Condition

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Abstract:

This paper presents a numerical method using FE damage analysis to simulate ductile tearing in CT specimen under low cycle fatigue loading conditions. To define a cyclic material properties, the nonlinear kinematic hardening model is adopted. The damage model is defined based on the ductility exhaustion concept using the multi-axial fracture strain energy concept. The proposed model is then applied to simulate two cyclic fracture toughness tests with different R-ratios. Simulated results show overall good agreement with experimental results.

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Periodical:

Applied Mechanics and Materials (Volume 853)

Pages:

88-91

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.853.88

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Online since:

September 2016

Authors:

Hyun Suk Nam, Yun Jae Kim*, Jin Won Kim

Keywords:

Crack Growth Modeling, Ductile Fracture Simulation, Finite Element Damage Analysis, Low Cycle Fatigue

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© 2017 Trans Tech Publications Ltd. All Rights Reserved

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References

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