2017
DOI: 10.1016/j.triboint.2017.05.037
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Study on self-loosening of bolted joints excited by dynamic axial load

Abstract: 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 th… Show more

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Cited by 66 publications
(26 citation statements)
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“…Self-loosening happens when this stored energy is released as the result of overcoming of above mentioned friction forces by any means. There are various theories and previous works on the reason for self-loosening of bolts through vibration, thermal cycles, and thermal shock [34][35][36][37][38][39][40][41][42][43]. Broadly speaking, the works agree that, unless an external load acts on the bolted joint, the frictional forces will remain intact.…”
Section: Self-looseningmentioning
confidence: 99%
“…Self-loosening happens when this stored energy is released as the result of overcoming of above mentioned friction forces by any means. There are various theories and previous works on the reason for self-loosening of bolts through vibration, thermal cycles, and thermal shock [34][35][36][37][38][39][40][41][42][43]. Broadly speaking, the works agree that, unless an external load acts on the bolted joint, the frictional forces will remain intact.…”
Section: Self-looseningmentioning
confidence: 99%
“…This discrepancy is caused mainly by the initial part of the tensile process, where the slip stage had a different course. After the slip between the connected plates, the contact area and the contact stiffness of the bolted interfaces may be reduced due to the loss of the bolt preload [43,44]. In both specimens, such micro-scale changes at the interface areas could occur in a different way.…”
Section: Tensile Tests and Failure Modesmentioning
confidence: 99%
“…The cyclic loading will cause the bolted joint to be self-loosened Horn and Schmitt [30] Relaxation in Bolted Thermoplastic Compositejoints The cyclic loading will cause fretting wear the result in the reduction of clamping force Liu et al [31] Study on self-loosening of bolted joints excited by dynamic axial load…”
Section: Screw Self-loosening In Bolted Jointsmentioning
confidence: 99%
“…The fretting wears lead to steady reduction of the clamping force as the number of loading cycles increase [30]. In Liu et al [31] papers it is stated that when bolted joints are exposed in a vibrational environment the main failure mode of the bolted joints is the self-loosening. They also studied on the selfloosening behavior of bolted joint excited by dynamic axial load at fives levels on both preload and excitation amplitude.…”
Section: Ricci Et Al [35]mentioning
confidence: 99%
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