Experimental investigation and numerical simulation on fatigue crack behavior of bridge steel WNQ570 base metal and butt weld

Zong, Liang; Shi, Gang; Wang, Yuanqing

doi:10.1016/j.conbuildmat.2014.12.063

Cited by 25 publications

(4 citation statements)

References 13 publications

(14 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…7 shows a good agreement between all the models, the ASTM-E647 standard and the experimental results, for the crack propagating curve. This validates the algorithm and show that this approach, very similar to the one used by Zong et al [23], is useful to predict fatigue crack propagation.…”

Section: Fatigue Crack Growth On a Normal Ct Specimensupporting

confidence: 79%

“…When considering welded specimens, Zong et al [23] have also used this technique to calculate fatigue crack propagation. Unlike the second case presented in this paper, Zong et al [23] did not considered the full three-dimensional geometry of the longitudinal weld. When considering the weld geometry, the specimen will be subjected to a mixed mode loading, as K II will no longer be zero.…”

Section: Fatigue Crack Growth On a Ct Specimen Containing A Longitudimentioning

confidence: 99%

See 1 more Smart Citation

Algorithm for automatic fatigue crack growth simulation on welded high strength steels

Baptista

Infante²,

Marques³

2019

Frattura Ed Integrità Strutturale

View full text Add to dashboard Cite

Nowadays the demand for high strength steels is increasing. In order to design and develop high performance products, it is essential to understand the fatigue behavior of these materials. When considering welded components, the fatigue behavior is even more complex. The material parameters may change along the crack growth and mixed mode crack propagation may also occur. To assess welded high strength steel fatigue behavior, different welded CT specimens were tested. The Paris law material constants were obtained for the heat affected zone material. Fatigue crack growth life predictions were made using the obtained parameters and different automatic techniques. Previous work showed that the ABAQUS extended finite element method can predict fatigue crack growth, but as the implementation of the Paris law is not straight forward, to many conversions must be made and the results are too computer intensive. A simpler and more intuitive Python algorithm was developed, to enable the use of the experimental material parameters, to predict the crack propagation path. The obtain results show a good agreement with both the experimental Paris curves, and the analytical solution.

show abstract

Section: Fatigue Crack Growth On a Normal Ct Specimensupporting

confidence: 79%

Section: Fatigue Crack Growth On a Ct Specimen Containing A Longitudimentioning

confidence: 99%

Algorithm for automatic fatigue crack growth simulation on welded high strength steels

Baptista

Infante²,

Marques³

2019

Frattura Ed Integrità Strutturale

View full text Add to dashboard Cite

show abstract

“…In this study, FRANC3D V7.1 combined with ABAQUS were used to simulate the fatigue crack propagation. FRANC3D has been applied in many research works and proved to be effective and accurate [7,[11][12]. The first step is to employ ABAQUS to create the 3D finite element model including geometries, material parameters and boundary conditions [13].…”

Section: Procedures Of Fatigue Crack Growth Simulationmentioning

confidence: 99%

Numerical Simulation of Fatigue Crack Propagation in Steel Bridge with Welded Stiffeners Subjected to Out-of-plane Loadings

Tang¹,

Shi²,

Xue³

2019

Proceedings of the 2019 International Conference on Modeling, Simulation, Optimization and Numerical Techniques (SMONT 2019)

View full text Add to dashboard Cite

The main purpose of this paper is to simulate the fatigue crack growth in welded steel bridge subjected to out-ofplane loadings. FRANC3D and ABAQUS are jointly used to calculate the stress intensity factors and predict the fatigue crack growth life. The results shows that the mode I SIFs of crack front of this case increase significantly as the loading increases and they also increase when the crack has bigger initial size. Among the factors which affect the fatigue crack life, the loadings are the most effective one while the size of the initial crack has little influence on the fatigue crack growth life.

show abstract

“…The FRANC3D was used to calculate the new crack front and remesh the local model for the extended crack. Zong et al [11] reported that the numerical simulation using FRANC3D and ABAQUS can precisely predict the fatigue life of compact tension specimens, which demonstrates that simulation method is appropriate for fatigue assessment practice of whole steel bridges based on LEFM. Abilities of the FRANC3D include the insertion of the initial crack configurations, static crack analysis for calculation of stress intensity factor (K), and crack growth analysis.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Fatigue Crack Propagation in Steel I-Beams with Welded Transverse Stiffeners Subjected to In-Plane Loadings

Triamlumlerd¹,

Lenwari²

2017

View full text Add to dashboard Cite

Abstract. For bridge structures, the fatigue crack propagation represents the mechanical damage that shortens the service life of the structures. Most fatigue cracks initiate at the welded details due to geometric discontinuities, residual stresses, and initial weld defects. The welded transverse stiffeners have been widely used to increase shear strength of the steel girders. Under cyclic in-plane loadings, however, the fatigue crack initiates at the end of the stiffener, i.e., in the web gap, and propagates into the girder web. The objectives of this study are to (1) numerically simulate the fatigue crack propagation in steel I-girders with welded transverse stiffeners and (2) study the effects of initial crack size, fillet weld size, stiffener dimension, and web-gap length on the fatigue crack propagation. The FRANC3D software was used to perform the analysis of stress intensity factor, crack propagation, and fatigue life. The numerical results showed that the fatigue life increases as the web-gap length increases, while it decreases as initial crack size and thickness of the transverse stiffener increase. Also, the stress intensity factors of the steel I-beams that include the fillet weld in the finite element models are slightly lower than ones modelled without fillet weld.

show abstract

Experimental investigation and numerical simulation on fatigue crack behavior of bridge steel WNQ570 base metal and butt weld

Cited by 25 publications

References 13 publications

Algorithm for automatic fatigue crack growth simulation on welded high strength steels

Algorithm for automatic fatigue crack growth simulation on welded high strength steels

Numerical Simulation of Fatigue Crack Propagation in Steel Bridge with Welded Stiffeners Subjected to Out-of-plane Loadings

Analysis of Fatigue Crack Propagation in Steel I-Beams with Welded Transverse Stiffeners Subjected to In-Plane Loadings

Contact Info

Product

Resources

About