High Velocity Penetration/Perforation Using Coupled Smooth Particle Hydrodynamics-Finite Element Method

Swaddiwudhipong, S.; Islam, Md Jahidul

doi:10.1260/2041-4196.1.4.489

Cited by 37 publications

(23 citation statements)

References 19 publications

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“…This coefficient has been assumed to be 0-0.5 in simulations and theoretical analyses of aluminium-plate perforation in the literature. [13][14][15][16][17][18][19][20] To simplify the model, ignoring the difference in the dynamic frictional coefficients of dissimilar materials, this coefficient is assumed to be 0.05 in all simulations in this study.…”

Section: Numerical Model and Validationmentioning

confidence: 99%

A similarity method for predicting the residual velocity and deceleration of projectiles during impact with dissimilar materials

Song

Dong

Chen

et al. 2017

Advances in Mechanical Engineering

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A method for predicting the residual velocity and deceleration of a projectile during normal low-velocity impact on a 2024-O thin aluminium plate is developed based on the similarity theory. Geometric scaling, the dissimilar materials of the projectile and different target thicknesses are considered. By a similitude analysis, the simulation criteria between the modelling and prototype experiments are obtained. The dimensionless velocity and deceleration of a projectile can be predicted by the relationship equations with the dimensionless dynamic pressure, projectile density and target thickness. On the basis of experimental data, the dimensionless residual velocity relationship is obtained and verified. In the range of normalised target thicknesses of 0:5 H=D p 1 (where H is target thickness and D p is projectile diameter), the deceleration-time data during penetration is simplified as a triangular wave. Moreover, it can be characterised using the maximum deceleration, the time to the maximum deceleration and the period of the triangular wave. Through a simulation analysis, three dimensionless deceleration characteristics of the projectile are developed to replicate a prototype-like deceleration-time process in a scaled model.

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Section: Numerical Model and Validationmentioning

confidence: 99%

A similarity method for predicting the residual velocity and deceleration of projectiles during impact with dissimilar materials

Song

Dong

Chen

et al. 2017

Advances in Mechanical Engineering

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“…SPH is a computational technique for numerical simulation actually. Moreover, it is a Lagrangian formulation based method where the coordinates move with the object [11]. The computational domain is discretized into a finite number of particles.…”

Section: Numerical Simulation Modelmentioning

confidence: 99%

“…The feasibility and effectiveness of the method were proven by comparing the simulation results with the experimental results. Coupled FEM-SPH (Smooth Particle Hydrodynamics) method was also used to simulate penetration problem [11] and blast response issue [12]. In blast simulation, the SPH particles were used to model the explosive and the soil that experience large deformations, while the finite elements were used to model the rest of the soil and the tunnel.…”

Section: Introductionmentioning

confidence: 99%

Projectile Penetration into Sandy Soil Confined by a Honeycomb-Like Structure

Luo

Shi

Chen

et al. 2017

Shock and Vibration

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HPS (Honeycomb-like Protective Structure) is a newly proposed protective structure filled with sandy soil. In order to investigate the penetration resistance of the structure, numerical simulations based on SPH method had been carried out by using LS-DYNA, which are corresponding to the experiments. The calibrated model leads to reasonable predictions of the dynamic responses and damage modes of the HPS. More situations were carried out taking factors influencing the penetration into consideration, including point of impact, angle of impact, and projectile caliber. Penetration mode was established by analyzing the energy dissipation and investigating the mechanism from the phenomenological viewpoint. Simulation results show that the resisting forces and the torque that act on the long rod projectile would be greater than those acting on the short one when instability occurred. Besides, approximate 45 ∘ angle of impact was formed in the case of off-axis, which has a certain influence on the ballistic stability, resulting in more kinetic energy of projectile dissipating in HPS and less depth of penetration. The kinetic energy of projectile dissipated in sandy soil largely and the strip slightly, and the former was greater than the sum of the latter.

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“…Numerous FE models have also been developed for investigating the amount of forces generated by the impact of a solid object onto composite materials [Yaghoubi and Liaw, 2012;Her and Liang, 2004;Yaghoubi and Liaw, 2013;Menna et al, 2011;Liu and Swaddiwudhipong, 1997]. Smooth particle hydrodynamics (SPH) has been currently used for simulating high velocity penetration problems [Swaddiwudhipong et al, 2010;Liu et al, 2004]. Thus, facilities for accurate modeling do exist.…”

Section: Introductionmentioning

confidence: 99%

An Innovative Procedure for Estimating Contact Force During Impact

Yang

Sun

Lam

et al. 2014

Int. J. Appl. Mechanics

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Certain types of damage generated by the impact of a solid object are correlated with the amount of force that is localized around the area of contact between the impactor and the surface of the target. The stiffer the impactor, the higher the contact force when the amount of impulse delivered by the impact is held constant. Thus, realistic simulations of the contact force by finite element analysis (FEA) require representative, and detailed, information of the dynamic compressive properties of both the impactor and the target. In situations where relevant properties of the impactor material have not been documented, the estimation of contact force is filled with uncertainties. In addressing this challenge an innovative experimental-simulation calibration procedure involving the use of a custom made (inexpensive) tubular device is presented in this paper for measuring the dynamic compressive stiffness properties of impactor objects. Given the calibrated values the amount of contact force generated by the same impactor material in projected scenarios could be simulated with good accuracies for predicting damage.

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High Velocity Penetration/Perforation Using Coupled Smooth Particle Hydrodynamics-Finite Element Method

Cited by 37 publications

References 19 publications

A similarity method for predicting the residual velocity and deceleration of projectiles during impact with dissimilar materials

A similarity method for predicting the residual velocity and deceleration of projectiles during impact with dissimilar materials

Projectile Penetration into Sandy Soil Confined by a Honeycomb-Like Structure

An Innovative Procedure for Estimating Contact Force During Impact

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