An analytical model for the prediction of load distribution in multi-bolt composite joints including hole-location errors

Lecomte, Julie; Bois, Christophe; Wargnier, Hervé; Wahl, Jean

doi:10.1016/j.compstruct.2014.06.040

Cited by 35 publications

(14 citation statements)

References 16 publications

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“…In particular, bolt lateral clamping has been shown to significantly increase the laminate quasi-static bearing strength, up to 100%, by preventing out-of-plane damage effects under the washers [6,7,8,9]. In complex junctions involving more than a single row of fasteners, the joint failure is also affected by the unequal load distribution between the fasteners [10,11,12,13,14,15]. The load distribution between fasteners is itself influenced by the stiffness of the single-bolt elementary joint in the loading direction.…”

mentioning

confidence: 99%

Static and dynamic bearing failure of carbon/epoxy composite joints

Portemont¹,

Berthe²,

Deudon³

et al. 2018

Composite Structures

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Mechanical fastening is a common method used to join composite materials in aeronautical industry. Various studies have been performed dedicated to the behaviour of composite bolted joints under quasi-static loadings, but only few studies deal with the dynamic behaviour (crash or impacts). The aim of this work is to study the loading rate influence on the bearing response of a carbon/epoxy laminate loaded by a pin. For that purpose, a double shear test fixture has been specially designed to measure the global behaviour and the local response around the pin. Infrared thermography and Digital

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confidence: 99%

Static and dynamic bearing failure of carbon/epoxy composite joints

Portemont¹,

Berthe²,

Deudon³

et al. 2018

Composite Structures

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“…Besides the static behavior, Heimbs et al 20 presented their study on dynamic behavior of countersunk bolts also. Lecomte et al 21 tried to use analytical modeling method to calculate the load distribution among multi-bolt double-lap joint in composite-metal joining. Compared with the laminated composites, woven carbon composites are also widely used.…”

Section: Literature Reviewmentioning

confidence: 99%

Effects of countersunk hole’s geometrical deviation on the strength of bolted carbon fiber–reinforced plastic/polymer metal joints under tensile loading

Lundbäck¹,

Chen

Wang

2019

Proceedings of the Institution of Mechanical Engineers, Part B:

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Countersinking process introduces variations in the angle and depth of the countersunk hole due to the wearing down of the drilling bit and the specific properties of carbon fiber–reinforced plastic/polymer part. The ultimate tensile strength of the countersunk bolted composites is affected by the countersinking depth and angle. The article presents a numerical and experimental investigation on the effect of countersinking depth and angle on the tensile strength of the single-bolted countersunk joint. Numerical bolted models with designed depths and angles are constructed to predict the tensile strength. Nine experimental specimens are fabricated according to the ASTM-D5961 standard, and the experimental results validate the proposed numerical models. Analysis of variance is used to investigate the synergistic effect of the countersinking depth and angle on the ultimate tensile loading. The analysis of variance result shows that the countersinking depth should be strictly controlled. The relationship between the tensile strength and the depth of the countersunk hole is obtained by the validated numerical models, and the relationship could be used to allocate the tolerance of the countersunk holes. The reported work provides reference for precision countersinking in the composite bolted joint and help systematically in improving the precision strength prediction of the countersunk bolted joint in composites.

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“…McCarthy and Gray 6 further considered static friction effects between laminates, and extended spring-mass model to high bolt torque cases. Hole-location errors were considered in the work of Lecomte et al 7 Nonlinear behaviors caused by bearing degradation were also included in modeling. In the work of Taheri-Behrooz et al, 8 the effects of material nonlinear on load distribution were discussed in detail, and comparison between linear and nonlinear results was made.…”

Section: Introductionmentioning

confidence: 99%

An analytical stress model for composite multi-pinned plates considering the combination effects of pin load and bypass load in different positions

Tian

2021

Advances in Mechanical Engineering

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Multi-pin joints are commonly used in engineering due to their high loading capacity. However, affected by coupling relationships between pin load and bypass load, the evaluation of stress state is difficult for composite multi-pin joints. An analytical method is proposed in this paper to calculate stress distribution of these joints under tensile load. Stress functions in this method are created considering the pin load and bypass load, according to a geometry division of the whole plate. Superposition relationships are built for each section type with an influence coefficient of bypass load. Stress components could be obtained by calculation of stress functions when material properties, geometry dimension and load are known. Experiments and finite element method are employed to verify the validation of proposed method. Results show that pin position affects stress state, and mainly embodies in σx. The first pin always gets the highest stress level, while for the other pins the stress is quite similar. Increase pin number will decrease stress level but the effect is relatively small for the first pin.

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An analytical model for the prediction of load distribution in multi-bolt composite joints including hole-location errors

Cited by 35 publications

References 16 publications

Static and dynamic bearing failure of carbon/epoxy composite joints

Static and dynamic bearing failure of carbon/epoxy composite joints

Effects of countersunk hole’s geometrical deviation on the strength of bolted carbon fiber–reinforced plastic/polymer metal joints under tensile loading

An analytical stress model for composite multi-pinned plates considering the combination effects of pin load and bypass load in different positions

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