Determination of the Preload of Bolts for Structural Health Monitoring of a Multi-Bolted Joint: FEM Approach

Grzejda, Rafał; Warzecha, Mariusz; Urbanowicz, Kamil

doi:10.3390/lubricants10050075

Cited by 24 publications

(21 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They allow for the nonlinear analysis taking into consideration the possibility of separating the joined plates in the vertical direction and the occurrence of sliding in the horizontal direction. The following values of the contact layer parameters were adopted, appropriate for joining ground surfaces [38][39]:…”

Section: D Modelmentioning

confidence: 99%

Compressive Strength Analysis of a Steel Bolted Connection under Bolt Loss Conditions

Grzejda¹,

Perz²

2022

Communications

View full text Add to dashboard Cite

The aim of the study is the numerical analysis of a bolted connection under the conditions of loss of bearing capacity of some fasteners in this connection. The joined plates in the connection were made of the 3D finite elements, while the fasteners were treated as hybrid models consisting of rigid heads and nuts and flexible beams between them. A model of unilateral contact with friction was used between the joined plates. The bolted connection was first preloaded according to three different tensioning sequences and with a normalised force. After all the bolts were tensioned, the selected bolts were removed, simulating bolt damage under connection loading conditions. The connection was tested for external compressive loads up to 210 kN. The effect of the loosening of the connection on the load in the remaining bolts at the stage of the connection operation was investigated.

show abstract

Section: D Modelmentioning

confidence: 99%

Compressive Strength Analysis of a Steel Bolted Connection under Bolt Loss Conditions

Grzejda¹,

Perz²

2022

Communications

View full text Add to dashboard Cite

show abstract

“…A failure or leak in a process piping system can have a significant impact on a business, disrupting production or causing catastrophic consequences in the event of an explosion, fire, or hazardous fluid spill, especially for piping systems that work under high pressure [15]. One of the traditional ways of avoiding leaks in such piping systems is through adequate pre-tensioning of the multi-bolted connections, by which the pipelines are formed [16,17]. Some of the existing plants might have come across equipment and piping systems that require on-stream inspection without information on the material.…”

Section: Introductionmentioning

confidence: 99%

Ultrasonic Velocity and Attenuation of Low-Carbon Steel at High Temperatures

Tai,

Sultan,

Łukaszewicz

et al. 2023

Materials

View full text Add to dashboard Cite

On-stream inspections are the most appropriate method for routine inspections during plant operation without undergoing production downtime. Ultrasonic inspection, one of the on-stream inspection methods, faces challenges when performed at high temperatures exceeding the recommended 52 °C. This study aims to determine the ultrasonic velocity and attenuation with known material grade, thickness, and temperatures by comparing theoretical calculation and experimentation, with temperatures ranging between 30 °C to 250 °C on low-carbon steel, covering most petrochemical equipment material and working conditions. The aim of the theoretical analysis was to obtain Young’s modulus, Poisson’s ratio, and longitudinal velocity at different temperatures. The experiments validated the theoretical results of ultrasonic change due to temperature increase. It was found that the difference between the experiments and theoretical calculation is 3% at maximum. The experimental data of velocity and decibel change from the temperature range provide a reference for the future when dealing with unknown materials information on site that requires a quick corrosion status determination.

show abstract

“…Grzejda 16 studied the mechanical response of asymmetric multibolt structures under periodically varying loads. Grzejda et al 17 investigated the problem of preload in multi-bolt connections using the finite element method and showed that the number and sequence of tightenings had an effect on the bolt preload. Grzejda et al 18 used experiments and simulations to analyse the mechanical response of multi-bolt joint structures under pressure and shear.…”

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:

View full text Add to dashboard Cite

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.

show abstract

Determination of the Preload of Bolts for Structural Health Monitoring of a Multi-Bolted Joint: FEM Approach

Cited by 24 publications

References 50 publications

Compressive Strength Analysis of a Steel Bolted Connection under Bolt Loss Conditions

Compressive Strength Analysis of a Steel Bolted Connection under Bolt Loss Conditions

Ultrasonic Velocity and Attenuation of Low-Carbon Steel at High Temperatures

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

Contact Info

Product

Resources

About