Energy-based damage model incorporating failure cycle and load ratio effects for very low cycle fatigue crack growth simulation

Jin Ha Hwang; Yun Jae Kim; Jin Weon Kim

doi:10.1016/j.ijmecsci.2022.107223

Energy-based damage model incorporating failure cycle and load ratio effects for very low cycle fatigue crack growth simulation

Jin Ha Hwang, Yun Jae Kim, Jin Weon Kim

School of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

An energy-based damage model for simulating very low cycle fatigue (VLCF) crack growth is proposed to improve the prediction accuracy of our previous model. Modifications are made to explicitly include the terms related to failure cycle and load ratio. The parameters related to these terms are determined from mean fatigue life model of the material. The proposed damage model is validated by comparing with through-wall cracked pipe test data for Type 316 stainless steel. Predicted failure cycles are very close to experimental data, improving the prediction accuracy of our previous model. Comparison of fracture surfaces also shows good agreement.

Original language	English
Article number	107223
Journal	International Journal of Mechanical Sciences
Volume	221
DOIs	https://doi.org/10.1016/j.ijmecsci.2022.107223
Publication status	Published - 2022 May 1

Keywords

Energy based damage model
Load amplitude, Load ratio
Through-wall cracked pipe test
Very low cycle fatigue crack growth simulation

ASJC Scopus subject areas

Civil and Structural Engineering
Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.ijmecsci.2022.107223

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title = "Energy-based damage model incorporating failure cycle and load ratio effects for very low cycle fatigue crack growth simulation",

abstract = "An energy-based damage model for simulating very low cycle fatigue (VLCF) crack growth is proposed to improve the prediction accuracy of our previous model. Modifications are made to explicitly include the terms related to failure cycle and load ratio. The parameters related to these terms are determined from mean fatigue life model of the material. The proposed damage model is validated by comparing with through-wall cracked pipe test data for Type 316 stainless steel. Predicted failure cycles are very close to experimental data, improving the prediction accuracy of our previous model. Comparison of fracture surfaces also shows good agreement.",

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AU - Kim, Jin Weon

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Y1 - 2022/5/1

N2 - An energy-based damage model for simulating very low cycle fatigue (VLCF) crack growth is proposed to improve the prediction accuracy of our previous model. Modifications are made to explicitly include the terms related to failure cycle and load ratio. The parameters related to these terms are determined from mean fatigue life model of the material. The proposed damage model is validated by comparing with through-wall cracked pipe test data for Type 316 stainless steel. Predicted failure cycles are very close to experimental data, improving the prediction accuracy of our previous model. Comparison of fracture surfaces also shows good agreement.

AB - An energy-based damage model for simulating very low cycle fatigue (VLCF) crack growth is proposed to improve the prediction accuracy of our previous model. Modifications are made to explicitly include the terms related to failure cycle and load ratio. The parameters related to these terms are determined from mean fatigue life model of the material. The proposed damage model is validated by comparing with through-wall cracked pipe test data for Type 316 stainless steel. Predicted failure cycles are very close to experimental data, improving the prediction accuracy of our previous model. Comparison of fracture surfaces also shows good agreement.

KW - Energy based damage model

KW - Load amplitude, Load ratio

KW - Through-wall cracked pipe test

KW - Very low cycle fatigue crack growth simulation

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ER -

Energy-based damage model incorporating failure cycle and load ratio effects for very low cycle fatigue crack growth simulation

Abstract

Keywords

ASJC Scopus subject areas

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