Experimental and numerical study on the meso-scopic characteristics of metal composites jets by a shaped charge

Wang, Fang; Dong, Jun; Wang, Pei; Li, Jun; Jiang, Jianliang

doi:10.1063/1.5100781

Cited by 6 publications

(2 citation statements)

References 32 publications

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“…In recent decades, considerable research has focused on simulating the shape of the shaped charge, the amount of ammunition, the dynamic form of the shaped charge jet, the jet velocity, and the hole-forming process through the metal target [16,17]. Gooch et al [18] analyzed the target strength effect on penetration by shaped charge jets.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analyses of Perforation and Formation Damage of Sandstone Gas Reservoirs

Liang,

Zhao,

Jin

2024

Processes

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Shaped charge perforation is an important technology for sandstone gas reservoirs. In the process of shaped charge perforating, the initial permeability and porosity of the formation are greatly reduced, directly affecting oil and gas production. This paper uses smooth particle hydrodynamics (SPH) and finite element methods (FEMs) to study the formation damage caused by the shaped charge perforation. In this perforation simulation, the impact characteristics of the metal jet formed by the liner are coupled with the damage characteristics of the sandstone. A new mathematical model is proposed to describe the damage of permeability and porosity based on the Morris and Xue models. The simulated results show that a large-scale abdominal section appears at the perforation site, and the axis of the hole tilts with the increase in the perforation depth. The porosity damage at the perforation site is the greatest, up to 60%, while the permeability recovers to 90% of its initial state after pressure relief. The degree of porosity damage decreases with the increase in negative pressure, and when the negative pressure is 30 MPa, it may cause a large amount of sand production.

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Section: Introductionmentioning

confidence: 99%

Numerical Analyses of Perforation and Formation Damage of Sandstone Gas Reservoirs

Liang,

Zhao,

Jin

2024

Processes

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“…Researchers propose a two-dimensional real microstructure-based modeling technology to describe reactive material in much smaller scale [14], and appropriate equation of state parameters are given [15]. Mesoscopic numerical simulation is also introduced into the study of metal composites jets formation [16,17], while previous work [18,19] has also demonstrated the feasibility of the mesoscale simulation method for the PTFE-Al granular composites. Besides, the previous study also presented the damage enhancement behavior for typical PTFE-Al reactive material liner [11] and double-layered liner shaped charges [10], and reveals that the jet density and material ratio have great influence on damage ability using macroscopic modeling.…”

Section: Introductionmentioning

confidence: 99%

Study on the Formation of Reactive Material Shaped Charge Jet by Trans-Scale Discretization Method

Liu

et al. 2022

Crystals

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The formation process of reactive materials shaped charge is investigated by X-ray photographs and numerical simulation. In order to study the formation process, a trans-scale discretization method is proposed. A two-dimensional finite element model of shaped charge and reactive material liner is established and the jet formation process, granule size difference induced particle dispersion and granule distribution induced jet particle distribution are analyzed based on Autodyn-2D platform and Euler solver. The result shows that, under shock loading of shaped charge, the Al particle content decreases from the end to the tip of the jet, and increases as the particle size decreases. Besides, the quantity of Al particles at the bottom part of the liner has more prominent influence on the jet head density than that in the other parts, and the Al particle content in the high-speed section of jet shows inversely proportional relationship to the ratio of the particle quantity in the top area to that in the bottom area of liner.

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Mesoscale formation and energy release characteristics of PTFE/Al reactive jet

Zheng,

Zhang,

et al. 2024

Propellants Explo Pyrotec

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In order to investigate the mechanical formation, the mechanical‐thermo coupling mesoscale mechanism and the corresponding energy release characteristics of PTFE/Al composite material reactive jet, a mesoscale discretization model of PTFE/Al reactive liner with a mass ratio of 73.5 %/26.5 % is developed on the basis of the random delivery principle. The mesoscale numerical simulation is used to perform PTFE/Al reactive jet formation, obtaining the relative distribution characteristics of material, pressure, and temperature. The overpressure experiments for the energy release of reactive jets are conducted. The results show that there is an increasing tendency in the amount of Al particles from the jet's tip to its tail due to the velocity variance between PTFE and Al. The high temperature zones are found to be concentrated on the tip and axis of the jet, with particle deformation, collision and friction in the reactive jet accounting for the temperature rise. Moreover, the Al particle size has a significantly influence on the particle distribution and the mechanical‐thermo coupling behavior in the reactive jet, and the decrease of particle size is beneficial to the chemical reaction among the components of the reactive jet. To be more specifically, under the conditions of Al particle size of 400 μm, 600 μm and 800 μm, the overpressure peaks of reactive jet in 13 L chamber are 3.32 MPa, 2.86 MPa and 2.61 MPa, respectively. The variation of the overpressure with Al particle size obtained by experiment is consistent with the analysis of the mechanical‐thermo coupling characteristics of mesoscale numerical simulation.

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Experimental and numerical study on the meso-scopic characteristics of metal composites jets by a shaped charge

Cited by 6 publications

References 32 publications

Numerical Analyses of Perforation and Formation Damage of Sandstone Gas Reservoirs

Numerical Analyses of Perforation and Formation Damage of Sandstone Gas Reservoirs

Study on the Formation of Reactive Material Shaped Charge Jet by Trans-Scale Discretization Method

Mesoscale formation and energy release characteristics of PTFE/Al reactive jet

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