Experimental study and finite element analysis on the joining performance of GF/PP rivets

Wang, Yuan; Li, Yong; Huan, Dajun; Li, Lisha; Liu, Li; Cheng, Yao; Liu, Hongquan

doi:10.1177/0892705720939142

Cited by 3 publications

(2 citation statements)

References 22 publications

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“…In terms of composite bolted connections, Mccarthy et al 7,8 established the finite element calculation model of composite material convex head bolt connection, and discussed the influence of bolt gap on the connection structure.Wang et al 9 prepared glass fiber (GF)/polypropylene (PP) thermoplastic composite rivets (GF/PP rivets), which improved the performance of thermoplastic composite joints and reduced the joint weight. Minnetyan et al 10 evaluated the structural durability, damage tolerance, and progressive fracture characteristics of bolted graphite/epoxy composite laminates through computational simulations.…”

Section: Introductionmentioning

confidence: 99%

Study on failure characteristics of fiber reinforced composite structural connections

Shao,

Yang,

Liu

et al. 2023

Journal of Thermoplastic Composite Materials

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In this paper, the three-dimensional progressive damage finite element models of composite bolted connection and adhesive-bolt hybrid connection were constructed, and the accuracy of the model is verified by comparing with the experimental results. The energy-based B-K criterion was used to simulate the damage and evolution of the adhesive layer, and the effects of bolt hole diameter, pre-tightening force and layup sequence on the failure characteristics of composite mechanical connections were analyzed. The results show that, in the bolted connection model, the final failure mode is typically extrusion damage near the bolt hole, with matrix failure being the primary form of failure. Appropriately increasing the diameter of the bolt hole or applying an appropriate pre-tightening force can both enhance the connection strength. Maximal strength of the connection structure is achieved when the first layer in the connection area is oriented at 0°, whereas if the first layer is oriented at 90°, the connection's bearing capacity is minimally reduced. In the adhesive-bolt hybrid connection model, the fiber and matrix damage of the four plies closest to the adhesive layer mainly spread along the 45°direction, and the damage is mainly matrix tensile damage.

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Section: Introductionmentioning

confidence: 99%

Study on failure characteristics of fiber reinforced composite structural connections

Shao,

Yang,

Liu

et al. 2023

Journal of Thermoplastic Composite Materials

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“…Composite components are divided into numerous parts as per the requirements of structural design, manufacture, and maintenance of composites, as well as the limitations of the integrity molding technology. As a result, the joining technique plays a key role in the application of composites [ 6 ]. Usually, fasteners are used to connect joint parts and bolted joints are frequently used in aircraft structures because they are easy to produce, disassemble, repair, and replace [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

Tests and Numerical Study of Single-Lap Thermoplastic Composite Joints Bolted by Countersunk

et al. 2022

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Tensile tests were carried out to investigate the effect of stacking sequences on the bearing strength of single-lap thermoplastic composite countersunk bolted joints. A 3D elastoplastic model was built based on a plastic theory for numerical analysis. The damage initiation was judged based on LaRC05 criteria, and the damage propagation was described by using a nonlinear, gradual unloading method based on crack band theory. The accuracy of the present model was validated by comparing the numerical results to those from the tests. The test results showed that the effects of stacking sequences on the ultimate bearing strength and the 2% offset bearing strength are limited. Moreover, the numerical results depicted that the ultimate bearing strength and the 2% offset bearing strength reduce when the bolt-tightening torque or the bolt–hole clearance is increased.

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Analysis and optimization of rivet load distribution in multi-rivet connections of thermoplastic composite rivets

Yan,

Li,

Huan

et al. 2024

Journal of Reinforced Plastics and Composites

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GF/PP thermoplastic composite components predominantly employ metallic fasteners, leading to corrosion and weight issues. This study utilized an extrusion process to fabricate GF/PP thermoplastic composite rivets with properties akin to laminated panel materials. Through the controlled application of heat and pressure to the rivet ends, a novel connection structure was established. The article fabricated thermoplastic composite joints with varying end configurations and compared them with metallic rivet joints. Emphasizing the convex form, diverse multi-rivet links were crafted for single-lap tensile samples. Integrating tensile tests and strain gauge measurements, this research explored load distribution patterns across diverse rivet quantities and assessed the impact of size on distribution. Furthermore, finite element software was used to dissect the load distribution patterns and failure mechanisms in the multi-riveted connection structure. Drawing from experimental findings, convex GF/PP rivets exhibited an 18% higher tensile load than metallic ones, with a simultaneous 32% weight reduction. In multi-rivet connections, end rivets demonstrated higher load-bearing capacity. Enhanced spacing and plate width improved load distribution, elevating joint load capacity by 7% (spacing 25 mm to 55 mm) and 6% (width 30 mm to 55 mm). The simulation results indicate that increasing the spacing reduces the stress concentration at the first nail location.

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Experimental study and finite element analysis on the joining performance of GF/PP rivets

Cited by 3 publications

References 22 publications

Study on failure characteristics of fiber reinforced composite structural connections

Study on failure characteristics of fiber reinforced composite structural connections

Tests and Numerical Study of Single-Lap Thermoplastic Composite Joints Bolted by Countersunk

Analysis and optimization of rivet load distribution in multi-rivet connections of thermoplastic composite rivets

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