Global-local fatigue approaches for snug-tight and preloaded hot-dip galvanized steel bolted joints

Souto, Carlos d’Andrade; Gomes, Vítor M.G.; Silva, Lucas F.R.C. da; Figueiredo, Miguel; Correia, José A.F.O.; Lesiuk, Grzegorz; Fernandes, António Augusto; Jesus, Abílio M.P. De

doi:10.1016/j.ijfatigue.2021.106486

Cited by 8 publications

(3 citation statements)

References 18 publications

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“…with ∆ denoting the range of strain ε or stress σ. E is the Young's modulus, K ′ is the cyclic hardening strength coefficient, and n ′ is the cyclic strain hardening exponent. Several researchers still consider this power model in their fatigue life analysis, despite being an ancient model [40][41][42][43][44][45][46]. The parameters K ′ and n ′ may be determined via a linearised log-log regression analysis (more common) or, alternatively, via some curve fitting process, which is generally treated as a linear and nonlinear least-squares minimisation problem, respectively.…”

Section: Cyclic Elastoplastic Behaviourmentioning

confidence: 99%

Monotonic and Fatigue Behaviour of the 51CrV4 Steel with Application in Leaf Springs of Railway Rolling Stock

Gomes,

Souto,

Correia

et al. 2024

Metals

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Leaf springs are components of railway rolling stock made of high-strength alloyed steel to resist loading and environmental conditions. Combining the geometric notches with the high surface roughness of its leaves, fatigue models based on local approaches might be more accurate than global ones. In this investigation, the monotonic and fatigue behaviour of 51CrV4 steel for application in leaf springs of railway rolling stock is analysed. Fatigue models based on strain-life and energy-life approaches are considered. Additionally, the transient and stabilised behaviours are analysed to evaluate the cyclic behaviour. Both cyclic elastoplastic and cyclic master curves are considered. Lastly, different fatigue fracture surfaces are analysed using SEM. As a result, the material properties and fatigue models can be applied further in either the design of leaf springs or in the mechanical designs of other components made of 51CrV4 steel.

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Section: Cyclic Elastoplastic Behaviourmentioning

confidence: 99%

Monotonic and Fatigue Behaviour of the 51CrV4 Steel with Application in Leaf Springs of Railway Rolling Stock

Gomes,

Souto,

Correia

et al. 2024

Metals

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“…Ramberg-Osgood's model (Equation ( 13)) is given by decomposing the total strain amplitude, ε t a , into its elastic, ε e a , and plastic, ε p a , parts. In spite of being an old model, several researchers [33][34][35][36][37][38][39] recently used this equation model (13) to characterize the elasto-plastic behavior of a material under cyclic loadings, because this model is easy to apply and can also be correlated to fatigue life curves. In cyclic conditions, the cyclic strength hardening coefficient, K , and the cyclic strain hardening exponent, n , can be obtained with the linearization method and using the least-squares method.…”

Section: Cyclic Elasto-plastic Ramberg-osgood Modelmentioning

confidence: 99%

Cyclic Hardening and Fatigue Damage Features of 51CrV4 Steel for the Crossing Nose Design

2023

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A crossing nose is a component of railway infrastructure subject to very severe loading conditions. Depending on the severity of these loads, the occurrence of structural fatigue, severe plastic deformation, or rolling fatigue may occur. Under fatigue conditions with high plastic deformation, cyclic plasticity approaches, together with local plasticity models, become more viable for mechanical design. In this work, the fatigue behavior in strain-controlled conditions of 51CrV4 steel, applicable to the crossing nose component, was evaluated. In this investigation, both strain-life and energy-life approaches were considered for fatigue prediction analysis. The results were considered through obtaining a Ramberg-Osgood cyclic elasto-plastic curve. Since this component is subject to cyclic loading, even if spaced in time, the isotropic and kinematic cyclic hardening behavior of the Chaboche model was subsequently analyzed, considering a comparative approach between experimental data and the FEM. As a result, the material properties and finite element model parameters presented in this work can contribute to the enrichment of the literature on strain-life fatigue and cyclic plasticity, and they could be applied in mechanical designs with 51CrV4 steel components or used in other future analyses.

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“…Similarly, Tang et al [31] studied the mechanical characteristics of bolted connections of corrugated steel sheets, while Ajaei and Soyoz [32] analysed the effect of preload deficiency on fatigue demands of wind turbine tower bolts, and Hu et al [33] simulated the behaviour. Subsequently, Li and Zhan [34] proposed a new joint-slippage model for galvanised steel bolted joints with slippage, while Souto et al [35] described global-local fatigue approaches for snug tight and preloaded hot-dip galvanised steel bolted joints. Additionally noteworthy is the paper of Tronci and Marshall [36], who studied silver-coated fasteners used in aero-engines.…”

Section: Introductionmentioning

confidence: 99%

Testing the Mechanical Properties of High-Strength Zinc-Coated Bolts: FEM Approach

Grzejda

Kobielarz

2022

Coatings

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High-strength zinc-coated bolts are used as fasteners in prestressed multi-bolted connections. This communication deals with modelling such bolts using the finite element method. The analyses were performed for a zinc-coated M12 HV10.9 bolt. Coatings with the following thicknesses were considered: 40, 60, 84 and 92 µm. The influence of coating thickness on the selected mechanical properties of the bolt was investigated. The corresponding properties of an uncoated bolt were taken as a reference. It is shown that the use of a zinc coating with a standardised thickness is associated with a reduction in bolt stiffness of up to 11.2%.

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Global-local fatigue approaches for snug-tight and preloaded hot-dip galvanized steel bolted joints

Cited by 8 publications

References 18 publications

Monotonic and Fatigue Behaviour of the 51CrV4 Steel with Application in Leaf Springs of Railway Rolling Stock

Monotonic and Fatigue Behaviour of the 51CrV4 Steel with Application in Leaf Springs of Railway Rolling Stock

Cyclic Hardening and Fatigue Damage Features of 51CrV4 Steel for the Crossing Nose Design

Testing the Mechanical Properties of High-Strength Zinc-Coated Bolts: FEM Approach

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