Tensile behavior of hybrid multi-bolted/bonded joints in composite laminates

Gamdani, Farid; Boukhili, Rachid; Vadean, Aurélian

doi:10.1016/j.ijadhadh.2019.102426

Cited by 39 publications

(13 citation statements)

References 19 publications

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“…The failure displacement was 0.21–0.25 mm and the corresponding load was 2670–2919 N. The average maximum load of the four test pieces was 3796.35 N. In this experiment, there were two or more load peaks. Similarly, the characteristics of two load peaks also were reported in the bolted/bonded hybrid joint of the epoxy composite [ 12 , 13 , 14 ].…”

Section: Methodsmentioning

confidence: 67%

Experimental and Numerical Investigation on C/SiC Composite Z-Pinned/Bonded Hybrid Single-Lap Joints

Wang

Guan

et al. 2021

Materials

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Z-pinned/bonded joints are great potential connection components that have been used in the 2D C/SiC composite structures; however, the hybrid joints present complex failure mechanism considering the secondary deposited SiC matrix in the clearance. Therefore, the mechanical performance and failure mechanism of the joints are investigated through experimental and numerical methods in this paper. Experiment results show that two peaks exist in the load–displacement curves. The first load peak is 2891–4172 N with the corresponding displacement of 0.10–0.15 mm, and the second load peak is 2670–2919 N with the corresponding displacement of 0.21–0.25 mm. Besides that, the secondary deposited SiC matrix exhibits discrete distribution, and it has significant effects on the failure mechanism. Validated by experimental data, the proposed three-dimensional numerical model based on modified Hashin’s criterion and fastener element can predict the mechanical performance and failure process. The numerical results indicate that the first load peak is dominated by the deposited SiC matrix near the edge, while the second peak is dominated by the z-pin and the SiC matrix near the z-pin. Moreover, the effects of the deposited SiC matrix’s strength and distribution are discussed, which is meaningful to the optimal design of C/SiC composite z-pinned/bonded hybrid single-lap joints.

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Section: Methodsmentioning

confidence: 67%

Experimental and Numerical Investigation on C/SiC Composite Z-Pinned/Bonded Hybrid Single-Lap Joints

Wang

Guan

et al. 2021

Materials

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“…When stiffeners are bonded to web panels subjected to high shear stresses, peeling forces tend to appear in adhesives and this might lead to a brittle failure [4,10] This undesirable behavior could be avoided by adding fasteners to created hybrid fail-safe joints. For these circumstances, the presence of bolts can delay the peeling stresses and the adhesives reduce the stress concentration around the bolts [15]. According to Lopez-Cruz et al [16], the hybrid joint strength is related to the adhesive thickness, mechanical properties of the adhesive and bolt-hole clearance.…”

Section: Introductionmentioning

confidence: 99%

Shear Strengthening of Slender Steel Beams Using Cold‐formed Stiffeners and Adhesives

2021

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This paper explores an alternative for strengthening shear‐deficient beams by fixing cold‐formed stiffeners with non‐welded joints at buckling‐prone regions. The usage of welds may not be suitable in slender beams as it introduces residual stresses and local distortion on the web. The cold‐formed stiffeners are disposed in diagonal orientation and its corrugate‐shaped geometry with high moment of inertia improves the out‐of‐plane stiffness of the beam web. The assessment of this method was performed in an experimental campaign which included three‐point bending tests of four beams. In two specimens, the cold‐formed stiffeners were fixed on the web by means of hybrid bonded‐bolted joints. Additionally, two control specimens were tested: a beam without diagonal stiffeners and a beam with diagonal welded‐steel plate.

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“…Therefore, mechanical fastening is often coupled to bonding method for increasing the overall safety response of structures. [3][4][5] The bolted/bonded hybrid (HBB) joining technology is of interest in aerospace, automotive, naval and civil applications, but the analysis of HBB system fracture DOI: 10.1002/masy.202100010 behavior, depending on many design parameters, is still an open issue. In [6] the mechanical behavior of HBB single lap configuration was investigated, resulting that the load transferred by bolt is function of adhesive and adherend thickness, adhesive modulus and overlap length.…”

Section: Introductionmentioning

confidence: 99%

Numerical and Experimental Investigation on the Influence of Tightening in a Hybrid Single Lap Joint

Lamanna

Perrella

Opran

2021

Macromolecular Symposia

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Hybrid mechanical joints are achieved by the simultaneous use of multiple connection mechanisms such as bolting and bonding. This technique allows to obtain advantages in terms of mechanical properties compared to simple joints such as longer fatigue life and operability in critical environmental conditions. Many parameters influence the structural behavior of the hybrid junctions in this perspective numerical simulation can play a decisive role to the cause. Using hybrid joints allows generally to obtain a more homogeneous stress distribution than bolted ones which is why, over the years, such type of joint is widely used in the automotive and naval industries as well as in the avionics, with particular reference to the residual strength in partially damaged components. In the present work, a numerical model representative of tensile tests on single lap joints characterized by adherends of different nature is presented.

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Tensile behavior of hybrid multi-bolted/bonded joints in composite laminates

Cited by 39 publications

References 19 publications

Experimental and Numerical Investigation on C/SiC Composite Z-Pinned/Bonded Hybrid Single-Lap Joints

Experimental and Numerical Investigation on C/SiC Composite Z-Pinned/Bonded Hybrid Single-Lap Joints

Shear Strengthening of Slender Steel Beams Using Cold‐formed Stiffeners and Adhesives

Numerical and Experimental Investigation on the Influence of Tightening in a Hybrid Single Lap Joint

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