Dynamic Impact Tolerance of Shuttle Orbiter Wing Leading-Edge Panels

Fasanella, Edwin L.; Jackson, Karen E.; Lyle, Karen H.; Jones, Lee; Hardy, Robin C.; Kellas, Sotiris; Carney, Kelly S.; Melis, Matthew E.

doi:10.2514/1.31373

Cited by 4 publications

(2 citation statements)

References 1 publication

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“…The ERODS needs to be carefully calibrated to facilitate effective modelling of the composite. A value of −0.4 and −0.6 was determined to be suitable for CFRP and GFRP respectively in the simulation, which is in coherence with the data available in the literature [48][49][50]. The material properties used in the numerical simulation are defined in Table 3.…”

Section: Modelling Of External Reinforcementssupporting

confidence: 52%

Numerical Study on the Behaviour of Hybrid FRPs Reinforced RC Slabs Subjected to Blast Loads

Hosseini¹,

Jian²,

Zhang³

et al. 2023

Journal of Renewable Materials

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The safety of civilian and military infrastructure is a concern due to an increase in explosive risks, which has led to a demand for high-strength civil infrastructure with improved energy absorption capacity. In this study, a Finite Element (FE) numerical model was developed to determine the effect of hybrid Fibre Reinforced Polymer (FRP) as a strengthening material on full-scale Reinforced Concrete (RC) slabs. The reinforcing materials under consideration were Carbon (CFRP) and Glass (GFRP) fibres, which were subjected to blast loads to determine the structural response. A laminated composite fabric material model was utilized to model the failure of composite, which facilitates the consideration of strain rate effects. The damaged area of the laminate is determined in the FE model, and it is in good agreement with the corresponding experimental results in the literature. Models containing different stacking sequences were built to demonstrate their efficiency in resisting blast loads. In general, the damaged area was reduced when a hybrid reinforcement with CFRP as the top layer was used.

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Section: Modelling Of External Reinforcementssupporting

confidence: 52%

Numerical Study on the Behaviour of Hybrid FRPs Reinforced RC Slabs Subjected to Blast Loads

Hosseini¹,

Jian²,

Zhang³

et al. 2023

Journal of Renewable Materials

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“…Similar high element erosion strain values have been observed previously and documented in the published literature for a similar, layered CFRP architecture, 14 a braided CFRP architecture, 17 and a woven ceramic matrix composite. 18 In these articles, the high element erosion values were not determined in systematic manner, unlike the systematic optimization approach reported here.…”

Section: Discussionmentioning

confidence: 99%

Analysis of crush-damaged carbon-fiber-reinforced-polymer (CFRP) composites with optimization-assisted post-peak-stress modeling

Dong

Gräning²,

Carney

et al. 2020

Journal of Composite Materials

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In the presented effort, layered CFRP composites samples with differing thicknesses and cross-sections are manufactured and crushed under quasi-static loading conditions. Simulation of the crushes are conducted using traditional continuum mechanics damage models. Parameters are proposed to represent the post peak-stress material behavior including the residual strengths of the fiber and matrix, as well the ultimate strain for deletion of composite elements. This paper presents a systematic approach to identify optimal values for these post peak-stress parameters based on a methodology incorporating CAE models and numerical optimization. An adaptive meta-model based global optimization strategy, with the objective of matching the force-time characteristics of multiple crush experiments simultaneously, has been established to quantify the values of the CFRP’s post peak-stress degradation and erosion material model parameters through calibration. Using two separate test configurations for optimization, a set of values for those parameters are determined. This parameter set is shown to successfully predict the response of additional test cases, including matching of force-displacement curves and crushing modes. The resulting composite crush simulations show a good quantitative as well as qualitative agreement between simulations and experiments to a degree that is difficult to be achieved solely with previous engineering practice.

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Numerical and experimental study of externally reinforced RC slabs using FRPs subjected to close-in blast loads.

Reifarth

Castedo

Santos

et al. 2021

International Journal of Impact Engineering

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Dynamic Impact Tolerance of Shuttle Orbiter Wing Leading-Edge Panels

Cited by 4 publications

References 1 publication

Numerical Study on the Behaviour of Hybrid FRPs Reinforced RC Slabs Subjected to Blast Loads

Numerical Study on the Behaviour of Hybrid FRPs Reinforced RC Slabs Subjected to Blast Loads

Analysis of crush-damaged carbon-fiber-reinforced-polymer (CFRP) composites with optimization-assisted post-peak-stress modeling

Numerical and experimental study of externally reinforced RC slabs using FRPs subjected to close-in blast loads.

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