A finite element analysis of bolted joints loaded in tension: protruding head and countersunk fastener

Dursun, Tolga; Soutis, C.

doi:10.1108/ijsi-09-2015-0033

Cited by 4 publications

(2 citation statements)

References 14 publications

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“…Joint with a protruding head fastener may lead to higher load carrying capability and improved fatigue life. 29 Atas et al predict strength of bolted joints in CFRP composite laminates using cohesive zone elements. The cohesive zone elements can simulate subcritical damage on cross-ply laminates.…”

Section: Progressive Damage Theory Of Compositesmentioning

confidence: 99%

Study on the preload loss mechanisms of CFRP-steel hybrid bolted joint under transverse cyclic loading

Yang

Chen

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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There is bolt preload loss under vibration in the aircraft rudder, of which the connected parts are steel beam and CFRP panel, and the fastener is bolts and self-lock jet nuts. Based on the above phenomenon, this paper analyzes rotational loosening, washer wear, composite progressive damage, and plastic deformation condition of CFRP-steel hybrid self-lock bolted joint under transverse cyclic loading by experiments and finite element simulations, and subsequently analyzes the preload loss mechanisms. The results showed that washer wear was the main factor leading to the preload loss under long-term loading, and even this factor accounted for 70% of the total preload loss when the aluminum washer was used. During short-term loading, local slip and stress redistribution among threads, plastic deformation, and composite damage accounted for 30%, 50%, and 20% of the total preload loss respectively. To prevent preload loss, the wear-resistance of the washer should be improved, and the plastic deformation on the bolt and the damage in the composite material should be reduced.

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Section: Progressive Damage Theory Of Compositesmentioning

confidence: 99%

Study on the preload loss mechanisms of CFRP-steel hybrid bolted joint under transverse cyclic loading

Yang

Chen

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…On this basis, the effect of gap on joint stiffness, stress state and damage initiation was investigated. Dursun and Soutis 41 investigated the effect of bolt geometry and friction coefficient on the stress distribution during tension in aluminum alloy bolt joints. The results showed that the bolt preload reduce the stress concentration and extrusion stress around the hole.…”

Section: Research Backgroundmentioning

confidence: 99%

Research on the relationship between the tightening torque and the preload of composite bolted structures

Yue

Xie

Liu

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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Bolted joints are widely used in assembly of composite structures that transmit large loads. The relationship between torque ( T) and preload ( F) is needed to be obtained when using the torque method to tighten bolts. In this paper, the T- F relationship in the process of bolt tightening composite laminates was analyzed through bolt tightening experiments. The variation behavior of friction coefficient in this process was also studied. On this basis, a progressive damage finite element model was established using the improved LaRC05 criterion to analyze the stress and damage of the composite laminate during tightening. The various stages in the bolt tightening were divided and the mechanical properties of each stage were analyzed. The results of the study showed that the thread friction coefficient μth and the bearing friction coefficient μb change with the preload during the tightening process. Its behavior can be described using an exponential function. Serious stress concentration and assembly damage can be formed in the direct extrusion area of the outer edge of the locknut when the composite laminate is bolted. The bolt tightening process of composite laminates can be divided into five stages. Research conclusions are valuable for understanding composite structures and formulating the bolt tightening process.

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Assembly technology for aeronautical CFRP structures under the collaborative constrains of geometric shape, physical performance and service stability

Guo

Xiao

et al. 2023

Composite Structures

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A finite element analysis of bolted joints loaded in tension: protruding head and countersunk fastener

Cited by 4 publications

References 14 publications

Study on the preload loss mechanisms of CFRP-steel hybrid bolted joint under transverse cyclic loading

Study on the preload loss mechanisms of CFRP-steel hybrid bolted joint under transverse cyclic loading

Research on the relationship between the tightening torque and the preload of composite bolted structures

Assembly technology for aeronautical CFRP structures under the collaborative constrains of geometric shape, physical performance and service stability

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