Perforation of concrete slabs with 48 MPa (7 ksi) and 140 MPa (20 ksi) unconfined compressive strengths

Hanchak, S.J.; Forrestal, M. J.; Young, Eunice R.; Ehrgott, John Q.

doi:10.1016/0734-743x(92)90282-x

Cited by 290 publications

(200 citation statements)

References 2 publications

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“…Besides the initial velocity of the steel projectile they also measured its discharge velocity. The influence of the reinforcement (5.7 mm diameter, e=76 mm) in respect to the perforation resistance is negligible according to Hanchak et al [17]. Interesting is the observation, that the concrete with a strength of 140 M P a was able to increase the perforation resistance only slightly in respect to the concrete with a compressive strength of 48 M P a.…”

Section: Dynamic Examplesmentioning

confidence: 77%

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Coupling of mesh-free methods with finite elements: basic concepts and test results

Rabczuk

Xiao

Sauer

2006

Commun. Numer. Meth. Engng.

179

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SUMMARYThis paper reviews several novel and older methods for coupling meshfree particle methods, particularly the elementfree Galerkin (EFG) method and the Smooth Particle Hydrodynamics (SPH), with finite elements. We study master slave couplings where particles are fixed across the finite element boundary, coupling via interface shape functions such that consistency conditions are satisfied, bridging domain coupling, compatibility coupling with Lagrange multipliers and hybrid coupling methods where forces from the particles are applied via their shape functions on the FE nodes and vice versa. The hybrid coupling methods are well suited for large deformations and adaptivity and the coupling procedure is independent from the particle distance and nodal arrangement. We will study the methods for several static and dynamic applications, compare the results to analytical and experimental data and show advantages and drawbacks of the methods.

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Section: Dynamic Examplesmentioning

confidence: 77%

“…6.2.2. Impact of a concrete slab Hanchak et al [17] performed different impact experiments of reinforced concrete slabs. In their experiments, the concrete had a compressive strength of 48 M P A and 140 M P A, respectively.…”

Section: Dynamic Examplesmentioning

confidence: 99%

Coupling of mesh-free methods with finite elements: basic concepts and test results

Rabczuk

Xiao

Sauer

2006

Commun. Numer. Meth. Engng.

179

View full text Add to dashboard Cite

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“…The resistance of the material under high pressure, the law of compaction (evolution of volumetric strain) and the elastic parameters, condition the penetration of the projectile into the target [10,13,14]. The analysis of the concrete subjected to this type of impact loading implies knowing the effect that high-pressure confinement exerts on the mechanical properties [5,[10][11][12].…”

Section: Introductionmentioning

confidence: 99%

“…In particular, because of their easy use and high hardness, these types of materials are attractive as structural and impact-resistant materials [6,7]. The necessity to protect army bunkers, nuclear power plants, and airport runways from missile impact, or civil buildings from natural hazards such as tornadoes or earthquakes has prompted several studies on concrete under extreme conditions [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Relationship Between Mesostructure, Mechanical Behaviour and Damage of Cement Composites Under High-Pressure Confinement

2008

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This work seeks to determine how the mesostructure of seven types of cement composites containing alumina particles or not controls their deviatoric strength, compaction law, and damage under high-pressure of confinement. First, the method of analysis of quasioedometric compression tests is presented. Accuracy of the method for concrete is discussed by means of numerical simulations. The confined compression tests performed show the effects of adding ceramic aggregates. Furthermore, an application of post-mortem analysis by infiltration technique of each specimen is presented, revealing a highly micro-cracked pattern depending of the mesostructure of these materials. From these observations, a discussion is presented on the influence that the addition of ceramic aggregates exerts on the confined behaviour of these composites. The tests showed a highly beneficial effect of the presence of particles, on both the deviatoric strength and the compaction law of the concretes considered.

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“…In the impact of a projectile on a massive target, a field of confined compression is created ahead of the projectile. The strength of the material under high pressure and the law of compaction (irreversible diminution of the volume) determine the depth of penetration of the projectile into the target [1,2], and this is why confined compression tests have been developed.…”

Section: Introductionmentioning

confidence: 99%

An experimental method of measuring the confined compression strength of high-performance concretes to analyse their ballistic behaviour

2006

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Abstract. The test known as "quasi-oedometric compression" consists of the compression of a cylindrical specimen confined in a thick vessel. In this work, an original methodology is proposed to deduce the radial stress and strain within the specimen using hoop strains measured on the external surface of the vessel, taking into account its elasto-plastic deformation. On one hand the spherical and deviatoric behaviours of two concretes are deduced. On the other hand, their ballistic behaviour is analysed using impact tests. These experiments are simulated numerically by the plasticity model of Krieg, Swenson and Taylor, and the features of the model are identified by the previous confined compression tests. The capacity of the model to describe the ballistic behaviour of such materials is shown in a comparison of the numerical simulations with the ballistic tests.

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Perforation of concrete slabs with 48 MPa (7 ksi) and 140 MPa (20 ksi) unconfined compressive strengths

Cited by 290 publications

References 2 publications

Coupling of mesh-free methods with finite elements: basic concepts and test results

Coupling of mesh-free methods with finite elements: basic concepts and test results

Relationship Between Mesostructure, Mechanical Behaviour and Damage of Cement Composites Under High-Pressure Confinement

An experimental method of measuring the confined compression strength of high-performance concretes to analyse their ballistic behaviour

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