SPH-FEM simulation of shaped-charge jet penetration into double hull: A comparison study for steel and SPS

Zhang, Zhifan; Wang, Longkan; Silberschmidt, Vadim V.; Wang, Shiping

doi:10.1016/j.compstruct.2016.08.002

Cited by 35 publications

(14 citation statements)

References 55 publications

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“…SPH algorithm represents matter with spherical particles, and the interaction between particles is realized through neighborhood search [39]. The entire region is divided into several subregions with bucket classification.…”

Section: B Sph Neighborhood Searchmentioning

confidence: 99%

Numerical Investigation of Rock Breaking Mechanism With Supercritical Carbon Dioxide Jet by SPH-FEM Approach

Yang

2019

IEEE Access

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As a novel technology in the field of petroleum exploitation, rock breaking with supercritical carbon dioxide (SC-CO 2 ) has considerable social and economic benefits. To investigate the rock breaking mechanism under SC-CO 2 jet impacting in terms of mass and energy conservation, a fluid-solid coupling numerical model was established using smoothed particle hydrodynamics (SPH) method coupled with the finite element method (FEM). Jet movement feature and the stress distribution rule of impact target were obtained. Moreover, the space-time evolution of erosion cavity and failure process of elements were analyzed. The numerical research results are as follows: (1) the hybrid algorithm of SPH-FEM was effective for obtaining the numerical representation of rock breaking process under SC-CO 2 jet impacting, and the simulation results were in good agreement with the experimental data. (2) The asymmetrical distribution characteristics of monitored points caused the erosion cavity to deviate from the geometrical center of the target face. (3) Soft rock under SC-CO 2 jet impacting presented two failure forms: erosion and exfoliation. (4) The process of rock breaking with SC-CO 2 jet was as follows: when the jet came into contact with the target plane, the pressure stress on the mating face and shear stress on the contact edge dominated the evolution of initial compression-shear failure zone. Thereafter, the high diffusivity-driven SC-CO 2 penetrated into tiny cracks or pores near the failure zone, and strong air wedge effect caused tensile failure. With continuous high-speed impacting, the initial failure zone extended to a larger primary failure zone. Moreover, a few discrete failure zones were formed due to the high uncertainties of particles' motion trajectories, which mutually contributed to the main failure zone, and the erosion cavity was formed. When the jet became steady, quasi-static action was applied to the rock sample, and the erosion range expanded continuously.INDEX TERMS Jet impingement, numerical representation, rock fragmentation, supercritical carbon dioxide.

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Section: B Sph Neighborhood Searchmentioning

confidence: 99%

Numerical Investigation of Rock Breaking Mechanism With Supercritical Carbon Dioxide Jet by SPH-FEM Approach

Yang

2019

IEEE Access

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“…However, the research on composite materials under the action of shaped charge jet is limited. For example, compared with double steel hull, the damaged area of sandwich panel system (SPS) is smaller and the jet tends to bend and become thinner due to the resistance of composite layer, which indicates that polyurethane layer may have protective effect [15]. Jia et al [16,17] discussed the protection ability of different types of woven fabric rubber composite armor against shaped charge jet impact.…”

Section: Introductionmentioning

confidence: 99%

Influence of Weakening Groove on Cutting Results of Composites Subjected to Shaped Charge Jet

Ren

Weng

Sun³

et al. 2021

Shock and Vibration

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Carbon-fiber-reinforced polymer (CFRP) has been widely used in aerospace structures for its high strength to weight ratio and high stiffness to weight ratio. However, current pyrotechnic separation devices are mainly made of metal materials, the cutting research on CFRP composites is limited, and the effect of weakening groove on cutting results of composites is unclear under the action of shaped charge jet. In this paper, there firstly established a three-dimensional model of explosive cutting of CFRP composites by nonlinear finite element analysis (FEA), and based on the separation time, delamination, and kinetic energy of the laminate, the influence of weakening grooves on cutting results to the laminate is discussed. The results show that, in contrast to laminates with weakening grooves, laminates without weakening grooves increase the delamination of laminates. At the same time, here, we carried out the explosive cutting test on CFRP composites to verify the rationality of the simulation model. In addition, in order to obtain a better model under the action of shaped charge jet, we optimized the width and height of weakening groove by simulation calculation. Therefore, it proves that this study can guide the application of CFRP composites subjected to shaped charge jet in aerospace separation engineering.

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“…Firstly, the cutting of CFRPs has an effect on jet morphology and penetration damage area. Compared with steel-only structures, the sandwich plate made of two steel shells and a compact polyurethane has a smaller damage zone due to the assistance of the polymer layer [6]. For woven fabric rubber composites, Jia et al [7] pointed out that when subjected to a large-area ablation, the fiber yarns were significantly pulled out from the woven fabric by the jet impact.…”

Section: Introductionmentioning

confidence: 99%

Numerical and Experimental Failure Analysis of Carbon Fiber-Reinforced Polymer-Based Pyrotechnic Separation Device

Ren

Weng

Sun³

et al. 2020

International Journal of Aerospace Engineering

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Current pyrotechnic separation devices are mainly made of metal materials, limiting the capacity of lightweight design in advanced launching vehicles. With the outstanding mechanical properties, such as high mass-specific strength and modulus, carbon fiber-reinforced polymers (CFRPs) have the potential to replace metal materials in pyrotechnic seperaton devices. However, to improve the seperation reliability of these pyrotechnic separation devices, there still needs further understanding on the the failure mode of CFRP composites under linear shaped charge (LSC). In this paper, cutting tests were carried out on CFRPs for the failure analysis of CFRPs under LSC, and nonlinear finite element analysis (FEA) was performed to characterize the evolution of LSC cutting in CFRPs. According to experimental simulation and numerical simulation, it can be found that the three main failure modes in CERPs while subjected to LSC jet are shear failure, delamination failure, and tensile failure. In the early cutting stage, the initial time of damage of the fiber and the matrix near the shaped charge shows less difference and the laminate is directly separated by the energy of high-speed jet. When the jet velocity decreases, the jet morphology collapses and matrix damages precede into the fiber, which would cause tensile failure mode of CFRPs. Meanwhile, the delamination in low jet speed stages is larger than that in the high jet speed stages. These studies on the failure modes of CFRPs under LSC provide important basis for the future design of CFRP-based pyrotechnic separation devices, which is important to the lightweight design of launching vehicles.

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SPH-FEM simulation of shaped-charge jet penetration into double hull: A comparison study for steel and SPS

Cited by 35 publications

References 55 publications

Numerical Investigation of Rock Breaking Mechanism With Supercritical Carbon Dioxide Jet by SPH-FEM Approach

Numerical Investigation of Rock Breaking Mechanism With Supercritical Carbon Dioxide Jet by SPH-FEM Approach

Influence of Weakening Groove on Cutting Results of Composites Subjected to Shaped Charge Jet

Numerical and Experimental Failure Analysis of Carbon Fiber-Reinforced Polymer-Based Pyrotechnic Separation Device

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