Prediction of Shot Start Pressure for Rifled Gun System

Sudarsan, N. V.; Sarsar, R.B.; Das, Samir Kumar; Naik, Smita D.

doi:10.14429/dsj.68.12247

Cited by 7 publications

(5 citation statements)

References 7 publications

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“…Then, a dynamic load coefficient is used to account for dynamic effects. Alternatively, while the “instantaneous engraving” hypothesis is still adopted, the dimensional analysis method 8 is utilized to estimate the shot‐start pressure more accurately. Gradually, researchers have shifted their research focus to projectile engraving tests.…”

Section: Introductionmentioning

confidence: 99%

“…Take the value of AmpValueNew as load amplitude to solve the response in the next increment step k + 1.Repeat steps (1)-(8) to complete the calculation of increment step k + 1 and subsequent increment steps until the end of the simulation time.The coupled process is reflected in the following: steps (3)-(5) are the solution process of interior ballistic equations, using data transferred in from the ABAQUS/Explicit solver via the VUAMP subroutine interface in step(1). Step(8) represents the solution of the projectile engraving process by the ABAQUS/Explicit solver, where load amplitude is assigned with the projectile base pressure obtained in step(5).To achieve the coupled solution, sensors are defined to obtainx-directional (pointing to the muzzle) displacement and velocity at the center of mass of the projectile, as well as x-directional reaction force at the reference point of the barrel. According to Newton's third law, F I G U R E 7 Schematic diagram of data exchange in the coupled solution process.…”

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confidence: 99%

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Numerical simulation of the coupled dynamics model of the projectile engraving process

Zhang,

Rui,

et al. 2024

Int Journal of Mech Sys Dyn

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The projectile engraving process directly influences the projectile motion in‐bore and impacts the firing accuracy, firing safety, and barrel life of the gun. For this reason, attention has been focused on this research topic. To address the limitations of the “instantaneous engraving” hypothesis adopted in the classical interior ballistic theory, the VUAMP user subroutine, one of ABAQUS's secondary development interfaces, is utilized in this paper to realize the modeling and numerical simulation of a coupled dynamics model of the projectile engraving process. In addition to facilitating engineering applications, a polynomial fitting formula of the engraving resistance obtained by simulation is proposed and then used as a supplement to establish a closed and solvable interior ballistic model considering the projectile engraving process. By comparing with test data, the simulation accuracy of the coupled dynamics model is verified. Simulation results reveal that the engraving process takes 3.8 ms, accounting for 26% of the whole launch process, which takes 14.6 ms, demonstrating that the process is not instantaneous. The results of this paper can serve as a reference for future studies on the coupled solution of the projectile engraving process and interior ballistics of guns or gun‐like equipment.

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Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

Numerical simulation of the coupled dynamics model of the projectile engraving process

Zhang,

Rui,

et al. 2024

Int Journal of Mech Sys Dyn

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“…There have been several studies on the rotating band engraving process [5][6][7][8][9], however each work has its limitations and it is unable to apply to all driving band engraving processes of other ammunition.…”

Section: Introductionmentioning

confidence: 99%

“…Sudarsan et al [9] used the Dimensional Analysis Method to study the rotating band engraving process, and they established an analytical formula to determine the shot start pressure value for the gun system with the rifling barrel. Based on the mathematical model, a dependence of the shot start pressure in the width of the land and the groove of the barrel, the width of the driving band and the barrel diameter is depicted.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Simulation on the Rotating Band Engraving Process of 23 mm Projectile

Bui

2021

AiMT

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Dynamic engraving process of 23 mm projectile was studied using numerical simulation. A finite element model of projectile and barrel during the engraving process was constructed, and the deformation process of the driving band, the displacement parameters of the projectile, the force interaction between the projectile and the barrel were determined. To evaluate the simulation model, a semi-static experiment was carried out on an MTS-810 universal testing machine with a cross-head speed of 20 mm min−1. The simulation results show that the mechanism of the 23 mm projectile rotating band engraving process is the plastic deformation process of the rotating band material, engraving time is 1.12 m s, and the projectile velocity after engraving is 105 m s−1. The simulation results reflect the actual rotating band engraving process, which is very distinct from the assumptions used in the classical ballistic model. This work provides an approach to investigating the interior ballistic processes considering the dynamic engraving of rotating bands.

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“…Sun et al [7,8 ] conducted a large-caliber grenade shooting experiment and studied the engraving characteristics of the copper belt under different charge conditions. In the numerical calculation research, Sudarasan et al [9] used the dimensional analysis method to…”

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confidence: 99%

Experimental Study and Numerical Calculation of Projectile Dynamic Engraving Process

Yang

Zhang

2023

J. Phys.: Conf. Ser.

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The high temperature and pressure gas in the combustion chamber pushes the projectile towards the muzzle during the firing of the gun. The projectile belt is squeezed and deformed by the forcing cone. In order to study the dynamic engraving characteristics of the projectile, a short-barrel gun launcher was designed for experimental research. The projectile dynamics and projectile base pressure curves during the engraving process were obtained. Based on the experimental loading conditions, the J-C elastic-plastic model was used to numerically simulate the dynamic engraving process of the copper elastic belt. The deformation process of the elastic belt and the change characteristics of the resistance after the elastic were studied and the intrusion displacement obtained by the numerical calculation was compared with the experimental results and the results are consistent.

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Prediction of Shot Start Pressure for Rifled Gun System

Cited by 7 publications

References 7 publications

Numerical simulation of the coupled dynamics model of the projectile engraving process

Numerical simulation of the coupled dynamics model of the projectile engraving process

Modeling and Simulation on the Rotating Band Engraving Process of 23 mm Projectile

Experimental Study and Numerical Calculation of Projectile Dynamic Engraving Process

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