Study on the Dynamic Behaviors of X70 Pipeline Steel by Numerical Simulation

Zhang, Xiu Li; Mi, Yi; Ji, Tao; Xu, Hongxia; Xie, Yan Ting; Shen, Ying

doi:10.4028/www.scientific.net/amr.97-101.278

Cited by 5 publications

(2 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Many researchers used the J-C model for a wide range of material deformation and application under various constraints for pipeline materials. For example, the J-C model has been used to simulate the Charpy test in X80 pipeline materials [33], to simulate the drop weight tear test (DWTT) for X65 and X80 pipeline materials [34,35] and pipeline steel (PS) at different temperature [36], to simulate the split Hopkinson bar for X70 pipeline material [37], and high strength steel pipeline [38].…”

Section: Introductionmentioning

confidence: 99%

A Unified Fracture Model for X65 Pipeline Material Under Various Constraints Using the Extended Finite Element Method (XFEM)

Shahzamanian

2024

Journal of Pressure Vessel Technology

View full text Add to dashboard Cite

It is generally accepted that the fracture strain is dependent on geometry/constraints in metals. However, the current available implementation of XFEM assumes a fixed fracture strain criterion independent of the constraints. The objective of this paper is to develop and implement a variable fracture strain criterion in XFEM that is capable of predicting a wide range of fracture conditions in X65 pipeline steels with various crack tip constraints. Various small-scale tests with different out of plane constraints obtained from the literature were simulated using the XFEM in ABAQUS software. For each test, the value of the maximum principal strain (Maxpe) as a fracture initiation criterion in the cohesive zone model (CZM) in XFEM framework was varied while keeping the fracture energy constant until the model was able to accurately replicate the reported experimental results. For each test, the crack tip constraints were characterized and the stress triaxialities and Lode angle parameters at the onset of fracture initiation were calculated from the models. The results allowed expressing the fracture strain as an explicit function of stress triaxiality which was then implemented in ABAQUS XFEM using UDMGINI subroutine. For the sake of comparison, the tests were simulated in finite element method (FEM) using a similar damage initiation model namely, the Johnson-Cook (J-C) model. A single model in XFEM was able to accurately replicate the experimental observations for all specimens and compared well to experiments in the way simulated by FEM damage model.

show abstract

Section: Introductionmentioning

confidence: 99%

A Unified Fracture Model for X65 Pipeline Material Under Various Constraints Using the Extended Finite Element Method (XFEM)

Shahzamanian

2024

Journal of Pressure Vessel Technology

View full text Add to dashboard Cite

show abstract

“…Many researchers have developed material models capable to capture the strain rate sensitive behavior of metals with very satisfying results [21][22][23][24]. Simplified Johnson-Cook model is one of the material models that could give good prediction in the viscoplastic behaviour of metals with relatively easy physical understanding [25], [26]. The accuracy of this model depends on the accuracy of the inputted material parameter.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Anisotropy of Cold-Rolled St-37 Steel Plate Under High Strain Rates Loadings

Perkasa

Gunawan

Santosa

et al. 2023

MECHTA

View full text Add to dashboard Cite

Cold rolling process in metal could increase its strength and hardness, but also induces mechanical anisotropy. This is caused by unresolved plastic strain and microstructural changes caused by plastic deformation exerted by pair of rolls at a relatively low temperature. This research aims to provide understandings on anisotropic and strain rate sensitive behaviour of St-37 mild steel. The microstructure of rolled and unrolled St-37 plate were observed in 3 directions relative to the rolling direction. The cylindrical specimens were then prepared from rolled plate with 33.3% reduction in the orientation of 0o, 45o, and 90o relative to the rolling direction. Specimens were also prepared from unrolled plate as comparison in the same directions. These specimens were then tested in compression loading, first in quasi-static condition, and then by using Split-Hopkinson Pressure Bar (SHPB) at the strain rate of 1200 s-1. The experimental results in the form of stress-strain curves are used to obtain the parameters of Simplified Johnson-Cook viscoplastic model. The anisotropy of yield strength in rolled specimens could be seen on both quasi-static and high strain rate condition, where the highest strength found on the specimens perpendicular to the rolling direction. In addition, the effect of cold rolling to the strain rate sensitivity of the material were also captured successfully in this study, where specimens from rolled plate show less strain rate sensitivity compared to the unrolled specimens.

show abstract

Prediction of Gurson Damage Model Parameters Coupled with Hardening Law Identification of Steel X70 Pipeline Using Neural Network

et al. 2021

View full text Add to dashboard Cite

Study on the Dynamic Behaviors of X70 Pipeline Steel by Numerical Simulation

Cited by 5 publications

References 1 publication

A Unified Fracture Model for X65 Pipeline Material Under Various Constraints Using the Extended Finite Element Method (XFEM)

A Unified Fracture Model for X65 Pipeline Material Under Various Constraints Using the Extended Finite Element Method (XFEM)

Mechanical Anisotropy of Cold-Rolled St-37 Steel Plate Under High Strain Rates Loadings

Prediction of Gurson Damage Model Parameters Coupled with Hardening Law Identification of Steel X70 Pipeline Using Neural Network

Contact Info

Product

Resources

About