Stress Analysis of Gun Barrel Subjected to Dynamic Pressure

Babaei, Hashem; Malakzadeh, M.; Asgari, Hamed

doi:10.11648/j.ijmea.20150304.14

Cited by 6 publications

(6 citation statements)

References 14 publications

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“…Babaei, in his study, after the gun is fired, the deformations to be caused at the barrel due to the pressure were examined. Stress analyses was conducted by the help of ANSYS by entering the radial force value occurred in the area where the denotation occurred 10 . As can be seen, our results are supported by the literature.…”

Section: Discussionmentioning

confidence: 99%

“…After the gun is fired, the deformations to be caused at the barrel due to the pressure were examined. Stress analyses was conducted by the help of ANSYS by entering the radial force value occurred in the area where the denotation occurred 10 . After the study, it was determined that the material selected in the study passed the yield point and a serious deformation occurred in the area where the denotation occurred.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of the Mechanical Properties of the Barrel After Geometric Changes on the Mortar

Pıhtılı

Ulutas

2023

Def. Sc. J.

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The area close to the firing part as of the muzzle of a 120 mm mortar consists of trapezoidal threads. In order for the 120 mm mortar to hit the target, the target is aimed by giving the required angle with the help of these trapezoidal screw threads. Since it takes a lot of time to set the target in this way, the aim is to develop a hydraulic mechanism that automatically gives an angle to the system by lifting the trapezoidal screw threads instead of mechanically setting the angle to be adjusted easily in the shortest time. Thus, it is intended to convert the mortar into a full-automatic system that can rotate 360° around itself and can be adjusted to the desired angle in a short time and very precisely. The present study is conducted in two steps. At first, thermo-mechanical analyzes for the stresses affecting during firing of the currently used 120 mm mortar with a screw thread were investigated by ANSYS Workbench finite elements method. Then, the status of the mortar after removing the screw threads was examined in the ANSYS Workbench program under the effect of the same stresses and the results were compared between the two mortars and it was examined whether it is safe to remove the screw threads.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Investigation of the Mechanical Properties of the Barrel After Geometric Changes on the Mortar

Pıhtılı

Ulutas

2023

Def. Sc. J.

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“…The computation of the forced-convection boundary condition at the interior surface of the barrel must be carried out. For a turbulent flow, the heat-transfer coefficient, h g , is calculated using Equation (7), based on empirical interior ballistics code data (Figure 2). Table 1 lists the parameter values required for the calculation.…”

Section: Simulation Of Heat Transfer Thermal Stress and Mechanical St...mentioning

confidence: 99%

“…Many researchers analyzed stress, as it is related to hand caliber failure. Energy-based methods are used to obtain a simple analytical solution for the plastic stress of a thick-walled steel cylinder and to analyze that of the barrel affected by dynamic pressure [7]. Using a numerical simulation of the dynamic loading process of the barrel, researchers examined the radial effects of gas pressures [8].…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation and Design of a High-Temperature, High-Pressure Fluid Transport Pipe

Yoon

Park

2020

Applied Sciences

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When designing a hand caliber with a high-temperature, high-pressure internal fluid transport pipe, reliability, safe use, and performance must be considered. Reliability refers to the stress caused by thermo-mechanical load; safe use refers to the low-temperature burns that might occur upon contact, and high-temperature burns caused by gas leakage occurring in the cylinder gap; and performance refers to projectile velocity. In this study, numerical simulation methods for heat transfer, structure analysis, and gas leakage are proposed so that solutions can be designed to account for the above three criteria. Furthermore, a hand-caliber design guide is presented. For heat transfer and structural analysis, mesh size, the transient convective heat transfer coefficient, and boundary conditions are described. Regarding gas leakage, methods reflecting projectile motion and determination of the molecular weight of the propellant are described. As a result, a designed hand caliber will have a high reliability, because the thermo-mechanical stress is lower than the yield stress. There will be little risk of low-temperature burns, but there will be a high temperature-burn risk, owing to gas leakage in the cylinder gap. The larger the cylinder-gap size, the greater the gas leakage and the smaller projectile velocity. The presented numerical simulation method can be applied to evaluate various aspects of other structures that require high-temperature, high-pressure fluid-transport pipes.

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“…A design of a pressure vessel and its numerical analysis was carried out by I. Satyanarayana and K. Praveena [14]. A stress analysis of a gun barrel subjected to dynamic loading was investigated by H. Babaie [15]. A structural analysis of a thick-walled cylinder was investigated by Pial das and Md.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of stress distribution of a multi layered cylindrical pressure vessel

Somadder¹,

Das²,

Islam³

2023

Journal of Mechanical and Energy Engineering

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The operation of a multilayer pressure vessel subjected to thermomechanical loads is very significant. The cylindrical pressure vessel is widely used in industrial engineering, for example, to hold a variety of different types of liquid. On thick-walled cylinders, various loading circumstances such as internal overpressure, external overpressure, heat, bending, twisting, and combinations of these load characteristics are applied. Researchers have developed a number of strategies for enhancing the strength of cylinders, including the use of multilayer cylinders and increasing the thickness of the walls. This paper presents the results of an analytical and numerical analysis of a three-layer cylinder. Abaqus FEA software is used to determine temperature, displacement, and stress distribution of multilayer cylinder considering the effect of centripetal and centrifugal heat flow. From the numerical analysis it is observed that centrifugal heat flux is more hazardous than centripetal heat flux for multilayered cylinder under thermo-mechanical loading.

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Stress Analysis of Gun Barrel Subjected to Dynamic Pressure

Cited by 6 publications

References 14 publications

Investigation of the Mechanical Properties of the Barrel After Geometric Changes on the Mortar

Investigation of the Mechanical Properties of the Barrel After Geometric Changes on the Mortar

Numerical Simulation and Design of a High-Temperature, High-Pressure Fluid Transport Pipe

Characteristics of stress distribution of a multi layered cylindrical pressure vessel

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