Failure behaviour of composite T-joints with novel metallic arrow-pin reinforcement

Heimbs, Sebastian; Nogueira, André C.; Hombergsmeier, Elke; May, Michaël; Wolfrum, Johannes

doi:10.1016/j.compstruct.2013.11.022

Cited by 76 publications

(40 citation statements)

References 38 publications

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“…The residual force level is significantly higher than for all other specimens ( Figure 3). Similar failure modes as in the quasi-static tests were obtained during the high-rate dynamic tests but with a slight increase of peak force levels (see [12]), which is in agreement with other published studies [14,15].…”

Section: Quasi-static and Dynamic Testingsupporting

confidence: 81%

“…Such hybrid joints using metallic sheets with reinforcement pins connecting carbon fibre laminates were investigated in different recent studies with the arrow-shaped metallic pins leading to a strong mechanical interlocking effect within the composite laminate. For this reason, the metal pin-reinforcement approach was also selected to be studied here, making use of formed, spiked metal sheet inserts described in [11,12] (Figure 1c)). …”

Section: Composite T-joint Designsmentioning

confidence: 99%

“…The tests were performed both with a quasi-static and a high-speed loading rate of 5 m/s and are described in detail in [8,12].…”

Section: Quasi-static and Dynamic Testingmentioning

confidence: 99%

See 2 more Smart Citations

Hydrodynamic ram analysis of aircraft fuel tanks with different composite T-joint designs

Heimbs

Duwensee

Nogueira

et al. 2014

WIT Transactions on the Built Environment

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Three different composite T-joint designs were investigated experimentally and numerically for application in fuel-filled wing tanks under hydrodynamic ram (HRAM) loads. The test campaigns covering 0° T-pull and 30° T-bending tests were conducted under quasi-static and high-rate dynamic conditions in order to assess potential strain rate effects on the failure behaviour. In addition to the experimental test campaign, numerical modelling with the explicit finite element code LS-Dyna was conducted with the models being validated against the test results and being applied to ballistic impact simulations of a composite fuelfilled tank structure. While the unreinforced baseline design showed a rather brittle behaviour and poor performance, significant residual strength improvements and structural integrity under HRAM loads could be obtained with a hybrid design with metallic, arrow-shaped z-reinforcements between the composite laminates of skin and spar. A promising macro modelling approach for an efficient representation of the T-joint failure behaviour in large models was derived and successfully applied to structural HRAM simulations.

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Section: Quasi-static and Dynamic Testingsupporting

confidence: 81%

Section: Composite T-joint Designsmentioning

confidence: 99%

See 1 more Smart Citation

Hydrodynamic ram analysis of aircraft fuel tanks with different composite T-joint designs

Heimbs

Duwensee

Nogueira

et al. 2014

WIT Transactions on the Built Environment

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“…Apart from those industrial technologies, some other joining methods can be found in the literature. In [4] an arrow shape is laser cut and bent in a steel sheet. Those arrows are then inserted inside the composite.…”

Section: State Of the Artmentioning

confidence: 99%

Investigations on an Innovative Metal-Thermoplastic Composite Assembly

Paroissien¹,

Rozycki²,

Renault³

2016

Proceedings of the VII European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS Congress 2016)

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“…Verification tests range from the investigation of hydrodynamic ram parameters, such as the fluid pressure [5], to the study of hydrodynamic ram on a rectangular prism-shaped water tank [6]. Based on these past achievements, the outcomes of the studies on composite structures have been introduced in recent years [7]. Hydrodynamic ram phenomenon is divided fundamentally into three phases: shock, drag, and cavity [1].…”

Section: Introductionmentioning

confidence: 99%

Analysis and Test of Hydrodynamic Ram in Welded Metallic Water Tanks

Kim¹,

Kim²,

Jun³

2015

International Journal of Aeronautical and Space Sciences

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Analysis and test of hydrodynamic ram in welded metallic tanks containing water were performed to investigate the phenomena and to understand the effects on the resulting structural behavior. Arbitrary Lagrange-Euler coupling method was used for the analysis of the fluid-structure interaction occurring in the hydrodynamic ram, where the projectile, tank, and water are exchanging load, momentum, and energy during the traveling of the projectile through the water of the tank. For a better representation of the physical phenomena, modeling of the welded edges is added to the analysis to simulate the earlier weld line fracture and its influence on the resulting hydrodynamic ram behavior. Corresponding hydrodynamic tests were performed in a modified gas gun facility, and the following panel-based examinations of various parameters, such as displacement, velocity, stress, and energy, as well as hydrodynamic ram pressure show that the analysis and test are well correlated, and thus the results of the study reasonably explain the characteristics of the hydrodynamic ram. The methodology and procedures of the present study are applicable to the hydrodynamic ram assessment of airframe survivability design concepts.

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Failure behaviour of composite T-joints with novel metallic arrow-pin reinforcement

Cited by 76 publications

References 38 publications

Hydrodynamic ram analysis of aircraft fuel tanks with different composite T-joint designs

Hydrodynamic ram analysis of aircraft fuel tanks with different composite T-joint designs

Investigations on an Innovative Metal-Thermoplastic Composite Assembly

Analysis and Test of Hydrodynamic Ram in Welded Metallic Water Tanks

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