An analytical model for predicting the stiffness and strength of pinned-joint composite laminates

Olmedo, A.; Santiuste, Carlos; Barbero, Ever J.

doi:10.1016/j.compscitech.2013.10.014

Cited by 39 publications

(16 citation statements)

References 26 publications

(42 reference statements)

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“…Arun et al studied the strength of bolted fasteners and hybrid fasteners under tensile loading for unfilled, TiO 2 and ZnS filled glass fabric reinforced polymer matrix composites. Olmedo et al proposed an analytical model to predict bearing failure of pinned‐joint composite laminates. The model combined a mass‐spring model to reproduce the joint stiffness and a characteristic curve model to predict bearing damage.…”

Section: Introductionmentioning

confidence: 99%

Investigation on failure modes for pin joints made from unidirectional glass–epoxy nanoclay laminates

Singh

Saini

Bhunia

2015

Fatigue Fract Eng Mat Struct

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A B S T R A C T In the present work the effect of the nanoclay on the bearing strength and failure mode of the pin joints was investigated both experimentally and numerically. Geometric parameters, i.e. the distance from the free edge of specimen to the diameter of the first hole (E/D) ratio and width of the specimen to the diameter of the holes (W/D) ratio were investigated. The E/D and W/D ratios were varied from 1 to 5. Tsai-Wu failure criterion with characteristic curve method and progressive damage analysis was used for the prediction of failure modes. Results showed that bearing strength and failure mode were considerable affected by the wt% of nanoclay and the geometric parameters. A good agreement was obtained between experimental and numerical predictions.Keywords characteristic curve; failure analysis; glass reinforced; nanoclay; pin joint; progressive damage failure. N O M E N C L A T U R Es = shear failure strength t = thickness of the specimen B = bearing failure mode D = diameter of the hole E = distance from the free edge of specimen E F = flexural modulus E 1 = longitudinal tensile modulus E 2 = transverse tensile modulus G 12 = shear modulus N = net-tension failure mode R c , R ot , R oc = characteristic curve parameters S = shearing failure mode v 12 = Poisson ratio W = width of the specimen X c = longitudinal compressive strength X t = longitudinal tensile strength Y c = transverse compressive strength Y t = transverse tensile strength ε F = strain to failure θ = failure angle σ b = bearing stress σ F = flexural strength I N T R O D U C T I O NIn the last decade, composite materials are being commonly used in structures that demand a high level of mechanical performance. Their high strength to weight and stiffness to weight ratios has facilitated the development of lighter structures, which often replace conventional metal structures. Fibre-reinforced composites offer the most reliable engineering materials in automotive, marine and aircraft industrial engineering applications because of their outstanding mechanical properties like impact resistance, high durability, low coefficient of friction and thermal expansion, ability to provide higher

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Section: Introductionmentioning

confidence: 99%

Investigation on failure modes for pin joints made from unidirectional glass–epoxy nanoclay laminates

Singh

Saini

Bhunia

2015

Fatigue Fract Eng Mat Struct

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“…Drilling is an operation commonly required for the mechanical joining of composite components. 1 Induced damage is one of the undesired effects of drilling, mainly due to the use of inadequate cutting parameters or worn drills, and has received extensive attention in the literature. 2 There are numerous studies focused on induced damage during machining of carbon and glass fiber composites, since it is a common cause of component rejection.…”

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confidence: 99%

Experimental analysis of drilling induced damage in biocomposites

Díaz-Álvarez

Rubio-López

Santiuste

et al. 2017

Textile Research Journal

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This paper focuses on the analysis of drilling induced damage on biocomposites (woven fibers of cotton, flax and jute combined with polylactic acid, PLA, as the matrix). The main contribution of this work is the analysis of the influence of cutting parameters and drill geometry on fully biodegradable composites based on two different types of PLA and different fibers types. The damaged area was studied both at the hole entry and exit. Contrary to the behavior commonly observed when drilling conventional composites, delamination was negligible. The hole entry and exit damage were analyzed and quantified in terms of the fraying extension being the dominant. The damage extension was found to be dependent on the matrix, fiber type and drill geometry. The combination between cotton fiber and the small drill point angle showed the lowest level of damage. On the other hand, composite reinforced with flax fibers (those that exhibited the highest tensile strength) presented the greatest damage extension, increasing with the number of layers of the composite. The matrix based on polymer 10361D PLA, recommended for natural fibers because of the better interface cohesion, resulted in reduced fraying. Concerning the influence of cutting parameters, damage decreased when increasing the cutting speed and feed rate.

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“…It is essential to determine the failure strength and modes of failures of these pin jointed connections. The main parameters influencing the pin joint design are W/D as well as e/D ratios, which shows the interactions of the pin diameter, D, width, W and distance between the center of the hole to the edge of the FML [4].There are several researches conducted on the composites made up of bolted or pinned joint [5][6][7][8][9]. Zhinan Zhang et al [10] determined the influence of the effect of pin load on the crack growth behaviour in the FML through experimental approach.…”

Section: Introductionmentioning

confidence: 99%

Bearing Strength and Failure Modes Analysis of Carbon Reinforced Aluminium Laminate

Sathyaseelan¹,

Karthik²,

Alphonse³

et al. 2019

IJITEE

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Objective of this paper is study the bearing strength and failure modes of the Fiber Metal Laminates prepared by hand layup technique in two different stacking sequences. Parameters like ratio of hole distance to hole diameter (e/D), ratio to the width of composite to hole diameter (W/D) are varied during the experiment. Hole diameter is kept constant as 6mm and e value is taken as 6mm, 12mm, 18mm, 24mm, 30mm and 36mm. Similarly the width of the FML specimen is maintained as 24mm and 36mm respectively. Results show that laminate with [Ca0°/Ca90°/Al/Ca90°/Ca0°]s orientation is having a bearing strength 3.94% higher than that of [Al/Ca0°/Ca90°/Al/Ca0°]s orientation. In terms of failure modes the specimens with distance-diameter ratio greater than 3 and the two width- diameter ratio 4 and 6 exhibited bearing failure. For smaller ratios, the failure is due to shear out which involves combination of bearing and net tension failure.

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An analytical model for predicting the stiffness and strength of pinned-joint composite laminates

Cited by 39 publications

References 26 publications

Investigation on failure modes for pin joints made from unidirectional glass–epoxy nanoclay laminates

Investigation on failure modes for pin joints made from unidirectional glass–epoxy nanoclay laminates

Experimental analysis of drilling induced damage in biocomposites

Bearing Strength and Failure Modes Analysis of Carbon Reinforced Aluminium Laminate

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