Threaded Components Under Axial Harmonic Vibration, Part 2: Kinematic Analysis

Hess, Daniel Baldwin

doi:10.1115/1.2888200

Cited by 18 publications

(4 citation statements)

References 5 publications

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“…Period II: Since Junker [36] found large-scale loosening under transversal vibration in an experiment in 1969, a few researchers have, subsequently, focused on the rotational loosening by axial vibration loading. Until 1996, Hess and his co-workers [37] continued to conduct research on rotational loosening caused by axial vibration loading. They initially performed a kinematic analysis for the twisting of a cap screw in a tapped hole, loaded by gravity (without preload) and subjected to axial harmonic vibration.…”

Section: Axial Vibration Loadingmentioning

confidence: 99%

Review of research on loosening of threaded fasteners

et al. 2021

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Loosening of threaded fasteners is a key failure mode, which is mainly caused by the slippage and friction behaviors on the thread and bearing surfaces, and will affect the integrity and reliability of products. Numerous scholars have conducted research on the loosening of threaded fasteners; however, comprehensive reviews on the loosening of threaded fasteners have been scarce. In this review article, we define loosening as a loss of preload and divide it into non-rotational and rotational loosening. The causes and mechanisms of non-rotational and rotational loosening are summarised. Some essential topics regarding loosening under transverse vibration have also attracted significant attention and have been investigated widely, including the loosening curve, critical condition of loosening, and influencing factors of loosening. The research carried out on these three topics is also summarised in this review. It is believed that our work will not only help new researchers quickly understand the state-of-the-art research on loosening, but also increase the knowledge of engineers on this critical subject. In the future, it is important to conduct more quantitative research on local slippage accumulation, and the relationship between local slippage accumulation and rotational loosening, which will have the potential to comprehensively unravel the loosening mechanism, and effectively guide the anti-loosening design of threaded fasteners.

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Section: Axial Vibration Loadingmentioning

confidence: 99%

Review of research on loosening of threaded fasteners

et al. 2021

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“…One of the theoretical explanations is that the dynamic loading causes internal resonant vibration of bolted connections, which results in loosening [59][60][61][62].…”

Section: Failure Analysis Of Ltts Subject To Static Loads Bolted Connmentioning

confidence: 99%

Structural Analysis of Lattice Steel Transmission Towers: A Review

Chen¹,

Ou²

2016

J Steel Struct Constr

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Lattice Transmission Towers (LTT) and the associated transmission line systems are important infrastructure in modern society. Due to the complicated load conditions and the nonlinear interaction among the large number of structural components, accurate structural analysis of the LTT systems has been a challenging topic for many years. Still today there are some gaps between research and industrial practice. This paper presents a summary of research outcomes from current literature. Recent developments in structural modelling and failure prediction technology are reviewed in terms of connection joints, individual members and structural systems subjected to static and dynamic loads. The advantages and disadvantages of different approaches have been compared. Finally, the knowledge gaps, associated challenges and possible research directions are highlighted.

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“…Ibrahim et al [17] and Horn and Schmitt [18,19] showed that fretting wear between contact surfaces, which caused the clamping force to decrease in the early stage, was one of the reasons for self-loosening of bolted joints. Some studies reported that fasteners could twist with or against gravity when threaded fasteners were subjected to axial harmonic excitation [20][21][22][23][24] . Hess and co-workers [21] observed that the nut moved down along the bolt in a bolted joint system when subjected to a high frequency excitation, but moved up in the opposite condition at low frequency excitation.…”

Section: Introductionmentioning

confidence: 99%

Study on self-loosening of bolted joints excited by dynamic axial load

Liu

Ouyang

Feng

et al. 2017

Tribology International

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Loosening tests of bolted joints are carried out under various preloads and excitation amplitudes. Three coatings are utilized to treat bolts, and their effects on the anti-loosening performance are studied. For the MoS 2 coated bolt, a reasonable preload is calculated, and its anti-loosening performance is also examined. It is found that the anti-loosening performance of MoS 2 coating on bolt is better than that of the other two coatings. Under the same equivalent stress as that of the uncoated bolt at the thread root, both the preload and the anti-loosening performance of the MoS 2 coated bolt are significantly greater. Additionally, a FE model is created to simulate the bolted joint, and very good agreement is found between numerical and experimental results.

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Threaded Components Under Axial Harmonic Vibration, Part 2: Kinematic Analysis

Cited by 18 publications

References 5 publications

Review of research on loosening of threaded fasteners

Review of research on loosening of threaded fasteners

Structural Analysis of Lattice Steel Transmission Towers: A Review

Study on self-loosening of bolted joints excited by dynamic axial load

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