Modelling bolted joints using a simplified bolt model

Grzejda, Rafał

doi:10.21008/j.2449-920x.2017.69.1.03

Cited by 8 publications

(5 citation statements)

References 17 publications

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“…The bolt tension force (the preload Fm) was applied to the face located on the threaded side of the bolt over a length corresponding to the bolt core. The preload force value can be calculated from the relationship [55]:…”

Section: Methodsmentioning

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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Section: Methodsmentioning

confidence: 99%

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

Grzejda

Kobielarz

2022

Coatings

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“…where j (•), defined in (13), is convex and thus ensures the existence and uniqueness of the solution.…”

Section: Regularization and Penalizationmentioning

confidence: 99%

“…[6,24,47,52]) would be computationally expensive and useless for the optimization of large assemblies. It is worth simplifying the model of bolt connection in some cases (computational limitations, complex mechanical behavior) [5,13] and even considering analytical models [9,14].…”

Section: Introductionmentioning

confidence: 99%

Coupled topology optimization of structure and connections for bolted mechanical systems

Rakotondrainibe

Desai

Orval

et al. 2022

European Journal of Mechanics - A/Solids

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HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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“…Grzejda 26,27 studied the modelling and computation of the assembly process of asymmetric multibolt structures, and the problem of distributed pressures in the structure was investigated by means of two types of connection models. Grzejda [28][29][30][31] studied the multi-bolt connection system, analysed its stiffness characteristics and calculated the preload force of each bolt. Grzejda 32 studied the problem of bolted joints in heavy machinery and analysed the stiffness characteristics when three different types of chocks are used.…”

Section: Introductionmentioning

confidence: 99%

Effect of tightening process parameters on the T-F curve of bolts in composite structures

Xuande,

Xiaogang,

Tao

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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Aircraft composite structures are widely joined using bolts. Differences in the tightening process parameters for tightening bolts can significantly affect the tightening torque (T)-preload (F) relationship. Some of the more significant process parameters include lubrication conditions, tightening speed, tightening area, sealant and washer. The experimental study compared the differences in T-F curves, friction coefficients, torque coefficients and yield preload during the tightening process for different values of the process parameters. The focus was on the state of the thread surface, the state of the bearing surface, the diffusion of the lubricating medium and sealant with preload, etc. The distribution of the T-F curve was obtained for all possible values of the process parameters. As the tightening speed increases, both the inter-thread friction coefficient and the macroscopic increase in the coefficient of friction on the bearing surface are observed when tightening the bolt head. The presence of sealant reduces the inter-thread friction coefficient. The size of the T-F curve area reflects the sensitivity of the bolt tightening process to the various process parameters. The size of the T-F curve area reflects the sensitivity of the bolt tightening process to the various process parameters.

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Modelling bolted joints using a simplified bolt model

Cited by 8 publications

References 17 publications

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

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

Coupled topology optimization of structure and connections for bolted mechanical systems

Effect of tightening process parameters on the T-F curve of bolts in composite structures

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