Numerical modelling to reproduce fragmentation of a tungsten heavy alloy projectile impacting a ceramic tile: Adaptive solid mesh to the SPH technique and the cohesive law

Bresciani, L.M.; Manes, Andrea; Romano, T.; Iavarone, P.; Giglio, Marco

doi:10.1016/j.ijimpeng.2015.10.003

Cited by 43 publications

(21 citation statements)

References 9 publications

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“…Because the connectivity between these particles is considered as a part of the computation procedure, a straightforward handling of problems with large deformations is allowed by using the SPH method [33]. A numerical technique, namely FEM-coupled to-SPH, was developed, inspired by [25], to take advantage of both the FEM and the SPH methods. The Lagrangian meshed elements were eroded after reaching a certain criterion by using this technique, and they were adaptively transformed to SPH particles that inherit identical mechanical properties with the failed elements.…”

Section: Numerical Modellingmentioning

confidence: 99%

“…The Smooth Particles Hydrodynamics (SPH), on the other hand, is a mesh-free Lagrangian method that discretizes a system into a number of "mesh-points" (or particles) carrying the field variables. Due to the not fixed nodal connectivity of this method, the SPH is able to cope with highly distorted elements [21,24,25]. The FEM is however more efficient in terms of accuracy and computation time when SPH particles are used.…”

Section: Introductionmentioning

confidence: 99%

“…The FEM is however more efficient in terms of accuracy and computation time when SPH particles are used. Therefore, an advanced technique is exploited, inspired by the research study of the same authors of the present paper, Bresciani et al, [25] to take advantage of both the Lagrangian FEM (before the occurrence of high distortion) and the SPH methods to deal with large deformation, mesh distortion, etc. In this numerical model, which is called FEM-coupled to-SPH, the specimen is initially modelled by Lagrangian 3D elements and subsequently by means of an eroding algorithm.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Four-point bending test on a middle strength rock: numerical and experimental investigations

Mardalizad¹,

Scazzosi²,

Manes³

et al. 2017

Frattura Ed Integrità Strutturale

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Developing a reliable numerical modelling technique is considered as challenge for fracture assessment of the geological materials, which are much subjected to hydrostatic pressure. For this purpose, the mechanical behaviour and the fracture pattern of a middle strength rock material, called Pietra Serena sandstone, is investigated both numerically and experimentally under a Four-Point Bending (also called Flexural) testing program. For the numerical approach, an innovative method, namely FEMcoupled to-SPH, is exploited due to its capabilities in dealing with rock mechanics related issues. Two different material models, which are the Karagozian and Case Concrete (KCC) and the Extended (Linear) Drucker-Prager, are exerted to assess their capabilities. The Flexural strength and the crack initiation area are studied based on the state of the stress in various parts of the specimen in both models, and finally the results obtained from the numerical models are compared with the data obtained from the experimental tests in order to assess the capability of the modelling approach.

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Section: Numerical Modellingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Four-point bending test on a middle strength rock: numerical and experimental investigations

Mardalizad¹,

Scazzosi²,

Manes³

et al. 2017

Frattura Ed Integrità Strutturale

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“…Due to the important role of the alumina ceramic tiles in the ceramic armors, a part of the research is devoted to penetration study of the alumina tiles [3,[22][23][24][25][26][27][28]. The e ect of composition of the alumina ceramic tiles was investigated by Zhang and Li [27].…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical study on the effect of aluminum foil wrapping on penetration resistance of ceramic tiles

2017

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Abstract. In this work, energy absorption of ceramic tiles wrapped by aluminum foil on its impact face is experimentally and numerically studied. Penetration tests as well as numerical simulations are employed to obtain Ballistic Limit Velocity (BLV) of the tiles. Experimental and numerical results yield BLV of bare tiles as 145 2 and 141.5 m/s, respectively. For the wrapped tiles, these values are increased to 168 2 and 162 m/s, respectively. Therefore, 13% increase in BLV of the ceramic tiles is obtained by just 2.4% increase in its weight. Moreover, it is shown that energy absorption of the wrapped tiles is at least 11% greater than that of the bare ones. Based on the results, the increase in BLV and energy absorption is due to the increase in the fracture conoid angle which postpones crack propagation to the back plate.

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“…The underground structure of tunnel lining locates in the enclosure space; the security problem and the precise evaluation of the dynamic response to the blasting or impact loading becomes an important engineering issue and there is a need to give mathematical model and solution of internal force [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Impact Pseudostatic Load Equivalent Model and the Maximum Internal Force Solution for Underground Structure of Tunnel Lining

Guo

Zhang

2016

Mathematical Problems in Engineering

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The theoretical formula of the maximum internal forces for circular tunnel lining structure under impact loads of the underground is deduced in this paper. The internal force calculation formula under different equivalent forms of impact pseudostatic loads is obtained. Furthermore, by comparing the theoretical solution with the measured data of the top blasting model test of circular formula under different equivalent forms of impact pseudostatic loads are obtained. Furthermore, by comparing the theoretical solution with the measured data of the top blasting model test of circular tunnel, it is found that the proposed theoretical results accord with the experimental values well. The corresponding equivalent impact pseudostatic triangular load is the most realistic pattern of all test equivalent forms. The equivalent impact pseudostatic load model and maximum solution of the internal force for tunnel lining structure are partially verified.

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Numerical modelling to reproduce fragmentation of a tungsten heavy alloy projectile impacting a ceramic tile: Adaptive solid mesh to the SPH technique and the cohesive law

Cited by 43 publications

References 9 publications

Four-point bending test on a middle strength rock: numerical and experimental investigations

Four-point bending test on a middle strength rock: numerical and experimental investigations

Experimental and numerical study on the effect of aluminum foil wrapping on penetration resistance of ceramic tiles

Impact Pseudostatic Load Equivalent Model and the Maximum Internal Force Solution for Underground Structure of Tunnel Lining

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