Numerical simulation of distortion-induced fatigue crack growth using extended finite element method

Wang, Chunsheng; Wang, Yuzhu; Cui, Bing; Duan, Lan; Ma, Nai-xuan; Feng, Jin-qiang

doi:10.1080/15732479.2019.1650076

Cited by 19 publications

(5 citation statements)

References 23 publications

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“…The second is based on simplified 1-D or 2-D analysis and the panel details are accurately evaluated; only the nominal stress is considered in the calculation, and the local stress concentration is not considered. The third is to accurately quantify the stress of the typical structure of the steel bridge panel based on the refined 3-D analysis [4]. In the absence of reference cases, this article adopts design standards.…”

Section: Design Level Of An Orthotropic Steel Bridge Deckmentioning

confidence: 99%

Fatigue evaluation of hot spot stress in fatigue vulnerable area of bridge deck structure based on thermal energy modelling

Fangqin

Liao

2021

THERM SCI

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The paper takes a Yangtze River bridge as the object, establishes a finite element model of the highway orthotropic steel deck structure, calculates and analyzes the fatigue stress of specific structural details based on the hot spot stress method, and obtains the fatigue vulnerable area of this type of bridge deck structure. Based on the bridge?s actual use, the thesis calculates and evaluates the fatigue life of the typical welding details of the bridge deck based on the American Highway Bridge Design Code. The results show that the fatigue stress amplitude calculation of the five types of fatigue vulnerable structure details under the Fatigue ? and Fatigue ? limit states. The values are all less than the allowable value, and the fatigue life meets the design requirements.

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Section: Design Level Of An Orthotropic Steel Bridge Deckmentioning

confidence: 99%

Fatigue evaluation of hot spot stress in fatigue vulnerable area of bridge deck structure based on thermal energy modelling

Fangqin

Liao

2021

THERM SCI

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“…These undesired cracks damage the surrounding region such that the whole structural strength becomes significantly weakened, implying that the consideration of a crack is essential in structural analyses and designs. Meanwhile, the consideration of a crack in a mesh-or grid-based numerical analysis may frequently suffer from the painstaking crack modeling job [32][33][34]. Furthermore, the crack modeling deteriorates the mesh uniformity, which may induce numerical instability and even numerical failure.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Vibration of Cracked Porous FG-GPL RC Cylindrical Panels Using a Phase-Field Crack Model

Cho

2024

Applied Sciences

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This study is concerned with the nonlinear free vibration of a cracked functionally graded porous cylindrical panel reinforced with graphene platelets by introducing a phase-field crack model. Conventional crack modeling by separating the grid nodes lying on the crack line is not only painstaking but also suffers from numerical instability. To overcome this problem, the internal crack is modeled by adopting the phase-field formulation and a virtual geometry rotation. The nonlinear numerical method is developed based on the first-order shear deformation theory incorporated with the von Kármán geometry nonlinearity in the framework of the 2-D extended natural element method, a recently introduced mesh-free method. The crack-induced singular field is represented by adopting the crack-tip singular functions, and the troublesome numerical locking is restrained by combining the MITC3+ shell concept and the shear stabilization factor. The curved shell surface is mapped to a 2-D rectangular NEM grid to avoid difficulty in defining the interpolation functions. The developed numerical method is verified through a comparison with the reference solutions, and the large-amplitude free vibration of porous cracked functionally graded grapheme platelet-reinforced cylindrical panels is profoundly examined by changing the major parameters.

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“…Orthotropic steel decks (OSDs) are widely used in long-span steel box girder cable-stayed bridges and suspension bridges due to their advantages of lightweight, high strength, ease of prefabrication and speedy construction, among other benefits (Zhuang et al, 2022; Wang et al, 2020). However, due to significant welding residual stress (WRS), welding defects, and increases in traffic load over time, fatigue cracking of existing OSD has continuously occurred during its service life (Cui et al, 2018; Zhu et al, 2020; Song et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Residual stresses effects on fatigue crack growth behavior of rib-to-deck double-sided welded joints in orthotropic steel decks

Chen,

Zhang,

et al. 2023

Advances in Structural Engineering

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Rib-to-deck (RTD) innovative double-sided welded joints have the potential to enhance the fatigue resistance of orthotropic steel decks (OSDs). However, welding residual stress (WRS) has been reported to be a contributing factor to fatigue cracking of steel bridges. This paper performed fatigue crack growth of the RTD innovative double-sided welded joints of OSD considering WRS. Firstly, a thermal-mechanical sequential coupling finite element model (FEM) of the RTD double-sided welded joints was established. The WRS distribution along the direction of deck thickness was analyzed. Secondly, the FEM of the OSD segment with crack was established. The fatigue crack behavior of RTD double-sided welded joints under the combined action of vehicle load and WRS was studied. Finally, the influences of initial crack on fatigue life was analyzed. Results indicate the distribution of the transverse WRS along the direction of deck thickness is tension-compression-tension stress, which has the characteristics of the sinusoidal function. The ∆ Keff value increases significantly considering WRS than without considering WRS during crack growth. WRS has a significant effect on fatigue life, and the fatigue life of the weld toe without considering WRS is about twice that of considering WRS. The crack depth and aspect ratio ( a0/ c0) of the initial crack affect the fatigue life of RTD double-sided welded joints.

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Numerical simulation of distortion-induced fatigue crack growth using extended finite element method

Cited by 19 publications

References 23 publications

Fatigue evaluation of hot spot stress in fatigue vulnerable area of bridge deck structure based on thermal energy modelling

Fatigue evaluation of hot spot stress in fatigue vulnerable area of bridge deck structure based on thermal energy modelling

Nonlinear Vibration of Cracked Porous FG-GPL RC Cylindrical Panels Using a Phase-Field Crack Model

Residual stresses effects on fatigue crack growth behavior of rib-to-deck double-sided welded joints in orthotropic steel decks

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