A continuous damage model of Q690D steel considering the influence of Lode parameter and its application

Huang, Xiaoguang; Ge, Jianzhou; Zhao, Jun; Zhao, Wei

doi:10.1016/j.conbuildmat.2020.120067

Cited by 28 publications

(7 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where η, θ, σ m , σ, and J 3 are the stress triaxiality, dimensionless Lode angle parameter, mean stress, equivalent stress, and third invariant of deviatoric stress, respectively. On the basis of the stress-modified critical strain model (SMCS) that only takes into account stress triaxiality in fracture strain, Huang et al [35] developed the LSMCS model (stress-modified critical strain model considering the effect of Lode parameters), considering the influence term of the Lode parameters as follows:…”

Section: Ductile Fracture Modelmentioning

confidence: 99%

Fracture Response of X80 Pipe Girth Welds under Combined Internal Pressure and Bending Moment

Zhu

Jia

et al. 2023

Materials

View full text Add to dashboard Cite

In order to determine the effect of defect size on the pipeline fracture performance of girth welds in oil and gas pipelines, ABAQUS was used to simulate the fracture responses of X80 pipelines with girth weld defects under internal pressure and bending moment conditions based on damage mechanics. In particular, the length and depth of defects were parametrically studied; the defect depth range was 20–80% of the wall thickness, and the circumferential length range of the defects was 5–20% of the pipeline circumference. The results show that, under the combined action of internal pressure and bending moment, the defect depth was more associated with adverse effects than the circumferential length of the defect. The failure load did not linearly decrease as the size of the defect increased, but when the depth of the defect reached a certain value, the failure load suddenly decreased.

show abstract

Section: Ductile Fracture Modelmentioning

confidence: 99%

Fracture Response of X80 Pipe Girth Welds under Combined Internal Pressure and Bending Moment

Zhu

Jia

et al. 2023

Materials

View full text Add to dashboard Cite

show abstract

“…The steel plate is made of highstrength steel material (brand Q690D). Previous researches have verified the performance of Q690D steel as a structural material, which can effectively reduce the structural system's weight owing to the high strength [31,32]. Above the two steel-plated ribbons, the precast concrete deck slabs are installed by using bolts.…”

Section: Modal Characteristics Of Stress-ribbon Bridgementioning

confidence: 99%

Enhancing Seismic Performance of Steel-Plated Stress-Ribbon Bridge with Tuned Mass Dampers: A Finite-Element Study

Dong,

Zhang,

Huang

et al. 2023

Advances in Civil Engineering

View full text Add to dashboard Cite

There has been a noticeable rise in the construction of lightweight stress-ribbon pedestrian bridges. In regions with a high risk of seismic activity, it is crucial to employ advanced seismic control technology to mitigate the impact of earthquakes and improve the bridge’s performance and durability. The objective of this study is to investigate the effect of tuned mass dampers (TMDs) on a steel-plated stress-ribbon bridge using the finite element method. The study aims to analyze the performance of various TMD designs focusing on both vertical and torsional modes. Multiple TMD configurations are considered and numerically compared. The results indicate that TMDs offer both a tuning effect and a static mass effect for stress-ribbon bridges. The tuning effect is most pronounced when the mass ratio falls between 2% and 4%. Installing a single TMD with a mass ratio of 0.05 can decrease vertical displacement along the entire span by up to 36%. Furthermore, a torsional TMD effectively reduces both the torsion of stress ribbons and the pier forces. As a recommendation, the combination of a single vertical displacement TMD and a torsional TMD can be considered the most appropriate scheme for earthquake response control. Moreover, the addition of TMDs reduces the bridge’s sensitivity to the direction of earthquake excitation. These findings contribute to a broader understanding of the earthquake performance of stress-ribbon bridges and assist designers in selecting appropriate control schemes to address vibrational issues.

show abstract

“…Based on the stress-modified critical strain model (SMCS), which only considers stress triaxiality on fracture strain, Huang [34] added the influence term of the Lode parameters and developed the LSMCS model as follows:…”

Section: Consider the Effect Of Lode Parameter Stress-modified Critic...mentioning

confidence: 99%

Phenomenological 2D and 3D Models of Ductile Fracture for Girth Weld of X80 Pipeline

Jia

Chen³

et al. 2023

Buildings

View full text Add to dashboard Cite

Welding is the main method for oil/gas steel pipeline connection, and a large number of girth welds are a weak part of the pipeline. Under extremely complex loads, a steel pipeline undergoes significant plastic deformations and eventually leads to pipeline fracture. A damage mechanics model is a promising approach, capable of describing material fracture problems according to the stress states of the materials. In this study, an uncoupled fracture 2D model with a function of fracture strain and stress triaxiality, two uncoupled 3D fracture models, a consider the effect of Lode parameter stress-modified critical strain (LSMCS) model, and an extended Rice–Tracey (ERT) criterion were applied to X80 pipeline girth welds. Comprehensive experimental research was conducted on different notched specimens, covering a wide range of stress states, and the corresponding finite element models were established. A phenomenon-based hybrid numerical–experimental calibration method was also applied to determine the fracture parameter for these three models, and the stress triaxiality of the influence law of the tensile strength was analyzed. The results showed that the proposed fracture criterion could better characterize the ductile fracture behaviors of the girth welds of the X80 pipeline; however, the prediction accuracy of the 3D fracture model was higher than that of the 2D fracture model. The functional relationship between the tensile strength and stress triaxiality of the X80 pipeline girth welds satisfied the distribution form of the quadratic function and increased monotonically. The research results can be used to predict the fracture of X80 pipeline girth welds under various complex loads.

show abstract

A continuous damage model of Q690D steel considering the influence of Lode parameter and its application

Cited by 28 publications

References 29 publications

Fracture Response of X80 Pipe Girth Welds under Combined Internal Pressure and Bending Moment

Fracture Response of X80 Pipe Girth Welds under Combined Internal Pressure and Bending Moment

Enhancing Seismic Performance of Steel-Plated Stress-Ribbon Bridge with Tuned Mass Dampers: A Finite-Element Study

Phenomenological 2D and 3D Models of Ductile Fracture for Girth Weld of X80 Pipeline

Contact Info

Product

Resources

About