Fracture behaviour of High Performance Concrete (HPC) investigated with a Hopkinson-Bar

Schuler, Harald; Hansson, Håkan

doi:10.1051/jp4:2006134175

Cited by 26 publications

(14 citation statements)

References 3 publications

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“…Over the past few decades, compared with the extensive research into the static fracture behaviour of HSC [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16], much less information is available on its dynamic fracture behaviour [17][18][19]. Schuler and Hansson [17] measured the tensile strength and the fracture energy of high performance concrete (HPC) with spalling tests, and Mindess et al [18] obtained dynamic mechanical properties of HSC and NSC using a drop-weight impact machine.…”

Section: Introductionmentioning

confidence: 99%

Fracture behaviour of high-strength concrete at a wide range of loading rates

Zhang

Ruiz

et al. 2009

International Journal of Impact Engineering

105

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International audienceThree-point bending tests on notched beams of a high-strength concrete have been conducted using both a servo-hydraulic machine and a self-designed drop-weight impact device. The fracture energy and the peak load were measured over a wide range of loading point displacement rates, spanning eight orders of magnitude. Under low displacement rates, from 10mm/s to 10mm/s, the tests were performed with the servo-hydraulic machine; from 10mm/s to 10mm/s we used the drop-weight impact machine. The results show that the fracture energy and the peak load increase as the loading rate increases. Nevertheless, such a trend is relatively slight under low rates and can be attributed to viscous effects mainly originating from the presence of water in the pore structure. Under high rates the increases in the fracture energy and in the peak load are dramatic due to the effect of inertia

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Section: Introductionmentioning

confidence: 99%

Fracture behaviour of high-strength concrete at a wide range of loading rates

Zhang

Ruiz

et al. 2009

International Journal of Impact Engineering

105

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“…Hierzu wird die Geschwindigkeitsverteilung entlang der Probenlängsachse zum Zeitpunkt der Rissinitiierung analytisch berechnet [30]. Bild 11 zeigt die Einwicklung der Geschwindigkeitsverteilung in zeitlichen Abständen von 5 μs.…”

Section: Faserbeton Unter Hochdynamischer Einwirkungunclassified

Faserbeton unter hochdynamischer Einwirkung

Fuchs

Keuser

Schuler

et al. 2007

Beton und Stahlbetonbau

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High dynamic actions like high velocity impact loads and blast loads due to detonations usually represent exceptional or accidental loads against structures. But in the course of safety policy thoughts their consideration in structural engineering gains in importance. Besides the consideration in design of structural members, there is also a need for development and optimization of new construction materials against high dynamic loading. Thereby the addition of fibers to concrete has been proved as essential to secure adequate protection. Against this background the present article deals with the behavior of fiber reinforced concrete subjected to high dynamic loads. Starting with a brief description of basics, the Hopkinson-Bar-tests, which have been carried out to gain information concerning the dynamic characteristics of fiber reinforced concrete will be presented. Penetration tests on fiber reinforced concrete panels show an application of fiber reinforced concrete for protective structures

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“…It has been proven to work well in a variety of high dynamic loading scenarios (e.g. [14,25,26]) and it is therefore used for the target material in the current contribution's numerical simulations.…”

Section: Introductionmentioning

confidence: 99%

A comparison of numerical modelling strategies in contact detonation scenarios with concrete targets

Esteban¹,

Gebbeken²

2016

Int. J. CMEM

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With continuous advancements in computational capacity, it has become possible and feasible to numerically model very complex physical phenomena, for instance, high dynamic loads. Hydrocodes or, in other words, "wave propagation codes" were conceived to model such scenarios. Several numerical discretisations are available in these programs, which require the problem at hand to be modelled in distinct ways and which yield different results. In the present contribution, three different numerical strategies are compared. These employ a coupling of the Euler and the Lagrange scheme, the Euler scheme by itself as well as the Smooth Particle Hydrodynamics (SPH) scheme. Their application in the hydrocode ANSYS Autodyn to a contact detonation scenario with a concrete target and with a breakthrough is described as an example of a high dynamic load. This scenario is of special interest since it is a possible threat to critical infrastructure. The numerical results are compared and contrasted; individual strengths and weaknesses of the three numerical modelling strategies are identified also by validating their numerical results with an experimental one. To the authors' knowledge, such comparison has not yet been done for contact detonation. It is concluded that the SPH method is the preferred strategy to model the considered scenario.

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Fracture behaviour of High Performance Concrete (HPC) investigated with a Hopkinson-Bar

Cited by 26 publications

References 3 publications

Fracture behaviour of high-strength concrete at a wide range of loading rates

Fracture behaviour of high-strength concrete at a wide range of loading rates

Faserbeton unter hochdynamischer Einwirkung

A comparison of numerical modelling strategies in contact detonation scenarios with concrete targets

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