Comparative numerical and experimental study of projectile impact on reinforced concrete

Pavlović, Ana; Fragassa, Cristiano; Disic, A

doi:10.1016/j.compositesb.2016.09.059

Cited by 40 publications

(14 citation statements)

References 20 publications

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“…Concerning stiffened plates, an analytical solution becomes practically unreachable, especially when the intent of the research involves the evaluation of a great number of scenarios. Thus, to develop this work, it was decided to use the software ANSYS Mechanical APDL ® (version 14.0, ESSS, Canonsburg, PA, USA), which applies the finite element method (FEM) to successfully solve several kinds of problems from structural [12] to heat transfer [13], and embraces all types of materials from composites [14][15][16] to concrete [17] and ceramics [18].…”

Section: Computational Modelingmentioning

confidence: 99%

Geometric Evaluation of Stiffened Steel Plates Subjected to Transverse Loading for Naval and Offshore Applications

Queiroz

Cunha

Pavlović

et al. 2019

JMSE

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This work searched for the optimal geometrical configuration of simply supported stiffened plates subjected to a transverse and uniformly distributed load. From a non-stiffened reference plate, different geometrical configurations of stiffened plates, with the same volume as the reference plate, were defined through the constructal design method. Thus, applying the exhaustive search technique and using the ANSYS software, the mechanical behaviors of all the suggested stiffened plates were compared to each other to find the geometrical configuration that provided the minimum deflection in the plate’s center when subjected to this loading. The optimum geometrical configuration of stiffeners is presented at the end of this work, allowing a reduction of 98.57% for the central deflection of the stiffened plate if compared to the reference plate. Furthermore, power equations were adjusted to describe the deflections for each combination of longitudinal and transverse stiffeners as a function of the ratio between the height and the thickness of the stiffeners. Finally, a unique equation for determining the central deflections of the studied stiffened plates based only on the number of longitudinal stiffeners without significantly losing accuracy has been proposed.

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Section: Computational Modelingmentioning

confidence: 99%

Geometric Evaluation of Stiffened Steel Plates Subjected to Transverse Loading for Naval and Offshore Applications

Queiroz

Cunha

Pavlović

et al. 2019

JMSE

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“…LS-OPT was used to build the respective metamodels, while LS-DYNA solver [21][22][23][24] was implemented to conduct the explicit crash simulations.…”

Section: Structural Optimizationmentioning

confidence: 99%

On design optimization of a composite impact attenuator under dynamic axial crushing

Boria¹,

Obradovic²,

Belingardi³

2017

FME Transaction

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“…Different methods such as stitching of the laminas, matrix toughening, and three-dimensionalbraided fabrics have been investigated to prevent delamination [1][2][3][4][5]. Matrix-toughening has recently attracted a lot of attention at which delamination toughness increases by inserting interleaf layers of toughened materials between the layers during the laminate's fabrication process [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Damage Characterisation of Nanointerleaved Woven CFRP Under Fatigue Loading

Fotouhi¹,

Fotouhi²,

Saeedifar³

et al. 2018

Preprint

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The use of high strength to weight ratio laminated composites is emerging in marine industry and applications as a very efficient solution for improving productivity. Nevertheless, delamination between the layers is a limiting factor for the wider application of laminated composites, as it reduces the stiffness and strengths of the structure. Interleaving nanofibrous mats between layers of composite laminates has been proved to be an effective method for improving composites delamination resistance. This paper aims to characterize the effect of interleaved nanofiber on mode I interlaminar properties and failure mechanisms when subjected to static and fatigue loadings. For this purpose, virgin and nanomodified woven laminates were subjected to Double Cantilever Beam (DCB) specimens. Static and fatigue tests were performed and the tests were monitored by acoustic emission technique. The mechanical results showed a 130% increase of delamination toughness for nanomodified specimens in the static loadings and more crack growth resistance in the fatigue loading. The AE results revealed that different type of failure mechanisms was the cause of these improvements for the modified specimens compared with the virgin ones.

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Comparative numerical and experimental study of projectile impact on reinforced concrete

Cited by 40 publications

References 20 publications

Geometric Evaluation of Stiffened Steel Plates Subjected to Transverse Loading for Naval and Offshore Applications

Geometric Evaluation of Stiffened Steel Plates Subjected to Transverse Loading for Naval and Offshore Applications

On design optimization of a composite impact attenuator under dynamic axial crushing

Damage Characterisation of Nanointerleaved Woven CFRP Under Fatigue Loading

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