Fracture simulation of partially threaded bolts under tensile loading

Yang, Fei; Veljković, Milan; Liu, Yuqing

doi:10.1016/j.engstruct.2020.111373

Cited by 29 publications

(7 citation statements)

References 27 publications

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“…Therefore, the tensile stress area A s for M18, M22, and M27 bolts is equal to 192, 303, and 459 mm 2 according to EN ISO 898 [23]. In terms of modelling the geometry of bolt assemblies, dimensions specified in [24,25] are used and more detailed descriptions relating to model the bolt assemblies have been reported in [22]. The mesh size for the coupler is 1.5 mm, while the mesh size in the threaded and unthreaded portions of the bolt is 1.0 and 3.0 mm, respectively, see Fig.…”

Section: Geometry Of Tensile Test Specimensmentioning

confidence: 99%

“…The post-necking true stress-strain diagram for high-strength steels including bolts can be approximately described using combined linear and power stress-strain law [31]. According to the recent investigation on bolts under tensile loading [22], it indicates that the post-necking true stress-strain diagram for bolts can be described using the power stress-strain law, as shown in Eq. (2).…”

Section: Materials Behavioursmentioning

confidence: 99%

“…Lots of damage models have been proposed to explain the fracture of metal material in the past few decades [33,34]. Using reasonable damage models in the simulation of bolt assemblies makes it possible to analyse the fracture behaviour of bolts under different loadings [17][18][19][20][21][22]. As the shear fracture of bolts is the major concern in this study, an appropriate damage model which could predict the shear fracture of metal material is adopted in the analysis.…”

Section: Fracture Criterionmentioning

confidence: 99%

“…Two constants C 1 and C 2 will determine the fracture PEEQ at each stress triaxiality. Although the BW criterion is put forward based on the tests on aluminium alloy, this criterion could also be used to simulate the fracture of steel material through calibrating the material constants C 1 and C 2 [17,18,22]. In the following section, parameter C 1 equal to 0.4, 0.5 and 0.6 will be adopted to simulate the shear fracture of bolts, while parameter C 2 is set to 1.4 according to the fracture simulation of bolts under tensile loading [22].…”

Section: Fracture Criterionmentioning

confidence: 99%

“…Fracture of the stainless bolts under combined tension and shear was simulated using a calibrated steel damage model. Grimsmo et al [21] and Yang et al [22] successfully modelled the tensile fracture and thread stripping failure of M16 bolt and nut assemblies based on calibrated steel damage models. Therefore, in the numerical analysis of steel-concrete bolted connectors, the shear fracture of bolts could also be simulated through considering suitable steel damage model, which is beneficial for better understanding the load transfer mechanism and shear performance of the steel-concrete bolted connector investigated.…”

Section: Introductionmentioning

confidence: 99%

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Fracture simulation of a demountable steel-concrete bolted connector in push-out tests

Yang

Liu

Xin

et al. 2021

Engineering Structures

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Many bolted connectors were proposed for use in steel-concrete composite structures over the past few decades. This is because using bolted connectors could make the assembly and disassembly of steel-concrete composite structures more convenient and reusing the dismantled structural components could also improve structural sustainability. Lots of static and fatigue experimental tests on steel-concrete bolted connectors were conducted but detailed finite element simulations including fracture of bolted connectors were rarely reported. This paper presents a series of simulations of a demountable steel-concrete bolted connector in push-out tests, which was proposed and reported by the authors of this paper before. Damage models of bolt and concrete materials are incorporated in the simulations to better understand the behaviour of the bolted connector and the failure mode of the push-out tests. Direct tension tests on bolts are simulated to calibrate the stress-strain relationship of bolt material and assumed pure shear tests on bolts are modelled to validate the fracture criterion used in the simulations. Results of modelling push-out tests indicate that the friction force at the steel-concrete interface accounts for a part of shear resistance of the bolted connector in push-out tests conducted. The load-slip curves and the fracture of bolts in push-out tests can be approximately predicted by incorporating damage models of bolt and concrete materials and considering an appropriate friction coefficient. The effects of concrete damage model, clearance in bolt hole, and pretension of short bolt on the shear performance of the bolted connector are discussed at last.

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Section: Geometry Of Tensile Test Specimensmentioning

confidence: 99%

Section: Materials Behavioursmentioning

confidence: 99%

Section: Fracture Criterionmentioning

confidence: 99%

Section: Fracture Criterionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Fracture simulation of a demountable steel-concrete bolted connector in push-out tests

Yang

Liu

Xin

et al. 2021

Engineering Structures

Self Cite

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Numerical study on behaviour of T‐stubs with bolts in tapped holes

Ptiček,

Skejić,

Latour

et al. 2023

ce papers

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Bolts in tapped holes (BTH) use threads on the bolt hole wall as an anchorage instead of nuts used in standard bolt assemblies. Requirements for BTH application are given in the draft version of new Eurocode prEN 1993‐1‐8, including the definition of minimum thread engagement lengths. BTH connected T‐stubs under tension were investigated in analytical parametric study to determine the influence of thread engagement length requirements on general applicability of BTH. FE models of BTH connected T‐stubs in tension were created and validated with experimental results. Analytical and FEM parametric studies were conducted in order to clearly investigate the difference between thread engagement length requirements, with the aim of possibly alleviating the minimum thread engagement requirements and enabling better applicability of BTH in structural steel joints.

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