Application of ductile fracture model for the prediction of low cycle fatigue in structural steel

Park, Sung-Ju

doi:10.1016/j.engfracmech.2023.109469

Cited by 6 publications

(3 citation statements)

References 65 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The presented hardening model parameters were verified through numerical analysis for the cases of NT, PST, and SH. The detailed calibration procedure was introduced in a previous study [6]. Figure 3 illustrates the finite element (FE) model, which includes one-eighth of the gauge section and was created using eight-node solid elements (C3D8R).…”

Section: Plasticity Model Calibrationmentioning

confidence: 99%

“…Mesh sensitivity issues near the crack tip line were addressed in a previous study, and the element length around the crack tip was determined to be 0.1 mm [22]. The ABAQUS/explicit user-defined subroutine VUMAT was developed to define the damage indicator at every Gauss point in finite element analysis [6]. This element experienced a loss of stiffness when the damage indicator reached a value of one.…”

Section: Fe Model and Fracture Simulationmentioning

confidence: 99%

“…The Hosford-Coulomb (HC) model, developed based on the Hosford yield criteria, was expressed as mixed stress-strain fields [5]. These models find frequent use in addressing ductile fracture-related challenges, owing to their simplicity in parameter calibration [6][7][8][9][10][11][12][13][14]. The Bressan-Williams-Hill (BWH) criterion was developed based on Hill's localized necking criterion to introduce a stress-based Forming Limit Curve (FLC) that could be used to predict fracture initiation with shell elements [15].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Numerical Study on a Ductile Fracture Model in Pre-Cracked Tension Tests of SUS304L

Park,

Lee,

Nam

et al. 2024

Materials

Self Cite

View full text Add to dashboard Cite

The effectiveness of a ductile fracture model in accurately predicting fracture initiation has been demonstrated. In this study, we concentrate on applying the ductile fracture model to pre-cracked structures constructed from SUS304L stainless steel with experimental and numerical analyses. The Swift hardening law was employed to extend the plastic behavior beyond the onset of necking. Additionally, the Hosford–Coulomb model, integrated with a damaged framework, was utilized to predict ductile fracture behavior, particularly under non-proportional loading conditions. Tension tests were conducted on various specimens designed to illustrate various fracture modes resulting from geometric effects. Numerical analyses were conducted to explore the loading histories, utilizing an optimization process to calibrate fracture model parameters. The proposed fracture model is validated against pre-cracked structures detailed in a reference paper. The results convincingly demonstrate that the fracture model effectively predicts both fracture initiation and propagation in pre-cracked structures.

show abstract

Section: Plasticity Model Calibrationmentioning

confidence: 99%

Section: Fe Model and Fracture Simulationmentioning

confidence: 99%