Effect of contact on the elastic behaviour of tensile bolted connections

Couchaux, Maël; Hjiaj, Mohammed; Ryan, Ivor; Bureau, Alain

doi:10.1016/j.jcsr.2016.10.012

Cited by 35 publications

(8 citation statements)

References 9 publications

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“…This complicates manual calculations and would increases the inaccuracy due to beam analogy. And it is without consideration that the T-stub is in contact with support structure, which is by definition non-linear problem [14]. (2) If virtual displacement Δδ would be introduced to the curved T-stub, it would split in to normal Δδn and tangential Δδt components.…”

Section: Resultsmentioning

confidence: 99%

Parametric Study of the Curved T‐stub in Tension

2019

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This paper presents parametric study of the T‐stubs with curved end‐plates in tension. Influence of the key parameters such as curvature, bolt arrangement and the thickness of the end‐plate on the strength and stiffness of the T‐stub is investigated. In curved T‐stubs bolts not only undergo tension, but are also subjected to shear, which limits the use of the conventional prying models. Apart shear, due to curvature, determination of the total effective length of a T‐stub is not trivial, and the collapse mechanisms of the end‐plate are uncertain. To clarify behaviour of the curved T‐stub and to determine the influence of the curvature on prying and shear, FEM results of 108 T‐stubs were analysed.

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Section: Resultsmentioning

confidence: 99%

Parametric Study of the Curved T‐stub in Tension

2019

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“…Their study revealed that bolted joints' fatigue strength is highly related to the stiffness level of joints and the preload level. Couchaux et al (2017) pointed out that secondary forces are induced in bolts by the contact stress between flange parts.…”

Section: Numerical Model Of Flange Connectionsmentioning

confidence: 99%

The impact of initial imperfections on the fatigue assessment of tower flange connections in floating wind turbines: A review

Zou

Niu

et al. 2022

Front. Mar. Sci.

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During the massive manufactures and installations of fixed offshore wind turbines in China, initial imperfections were often found in the inspection. As more and more attentions and efforts of the wind energy sector have been devoted to deep waters with fixed and floating wind turbines (FWTs), the impact of such initial imperfections on fatigue assessment is paramount to the reliable design and safe operation, which warrant rigorous study. This paper presents a comprehensive review of three different initial imperfections and their impacts on the fatigue lifetime of FWTs’ tower flange connections. A brief introduction on FWTs and flange connections is provided at first. This is followed by a detailed discussion of the environmental loadings and fatigue assessment on the flange bolted connections. Finally, a comprehensive review of the state-of-art research on three common initial imperfections, including flatness divergence, bolt loosening and tower inclination, are presented. Their impact on fatigue assessment is further discussed.

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“…The dynamic characteristics of a structure are significantly affected by mass, stiffness and damping effects of the bolted joints [15,16]. However, modelling the stiffness and damping effects is difficult in comparison to the mass effect due to its main relationship with the surface property of contact interfaces, the pre-loadings and clamping force caused by assembling the structure [17,18,19].…”

Section: Introductionmentioning

confidence: 99%

Modal testing and modelling the dynamic characteristics of a plate with bolted joints

Bahari

Yunus

Rani

et al. 2021

JMES

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Modelling the dynamic characteristics of the bolted joints in a complex assembled structure with a high accuracy is very challenging due to the assumptions and uncertainties in the input data of the FE model. In this paper, the identification of the dynamic characteristics of the bolted joints structure using the CBUSH element connector is proposed. Modal testing and normal modes analysis are conducted on a thin plate assembled structure with bolted joints. In the simulation work, the CBUSH element connector is employed and the stiffness coefficient for six degrees of freedom is computed based on four flexibility formulae. The predicted natural frequencies and their corresponding mode shapes are compared against the results of the experimental work. A good agreement of the FE model is achieved by using the coefficient of stiffness as represented in the Swift flexibility formula. The study justifies that the dynamic characteristics of the bolt joints could be accurately modelled by using the CBUSH element connector. The obtained findings provided an alternative approach to modelling the dynamic characteristics of a thin plate assembled structure with bolted joints.

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Effect of contact on the elastic behaviour of tensile bolted connections

Cited by 35 publications

References 9 publications

Parametric Study of the Curved T‐stub in Tension

Parametric Study of the Curved T‐stub in Tension

The impact of initial imperfections on the fatigue assessment of tower flange connections in floating wind turbines: A review

Modal testing and modelling the dynamic characteristics of a plate with bolted joints

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